Answer:
its Ice Age
Explanation:
An ice age is a long period of reduction in the temperature of the Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages and greenhouse periods, during which there are no glaciers on the planet.
Answer:
A
Explanation:
Where would you most likely find water molecules?
Answer:
You will likely find it in an oxygen atom. (O2)
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The Punnett square shows the cross for a particular trait between a homozygous dominant parent and a heterozygous parent.
What is the probability the offspring will be heterozygous for this trait?
Answer: 50% or 2/4
Explanation:
When you cross a homozygous dominant (AA) with a heterozygous (Aa) you will get 2 AA’s and 2 Aa’s
Which chemical bond most likely stores the most energy?
O
A. Double carbon-carbon bond
O
B. Single carbon-carbon bond
O
C. Hydrogen-oxygen bond
O
D. Sodium-chlorine bond
10. Which is an example of a chemical change?
Hello There!
A chemichal change is when the composition of the substance changes. It is a change between one or more substances and this creates new substances but it has different properties.
An example of a chemichal change could be mixing baking soda and vinegar together. When this happens, The baking soda reacts with the vinegar and this causes a new gas to be formed. "Carbon Dioxide"
Which best describes the relationship between DNA, genes, and chromosomes?
DNA is the basic unit of life. Long sequences of DNA form genes which contain instructions for producing proteins. Even longer strands of DNA are chromosomes which contain many many genes.
Hope this helps!!
Genes make up DNA and DNA makes up chromosomes this describes best the relationship between DNA, genes, and chromosomes.
What explains the relationship between DNA and chromosomes?In the nucleus of every cell, DNA molecules are packaged in a thread-like structure called a chromosome. Each chromosome is composed of DNA that is tightly wrapped around a protein called histone that supports its structure.
Each gene tells cells how to assemble the components of a particular protein. However, genes (DNA) are located in cell (nucleus) compartments that are different from the cell machines that make proteins (ribosomes).
Chromatin is a mixture of DNA and proteins that make up the chromosomes found in cells of humans and other higher organisms. Many of the proteins, histones, package vast amounts of DNA in the genome into a very compact shape that fits in the nucleus of the cell.
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Some plants rely on the wind to reproduce an example is the___. It’s important for plants to use the forces of nature to reproduce because they_____.
1. 1a White tuft of dandelion seeds 2a spiked burrs surrounding seeds 3a hard shell on a walnut?
2. 1b require pollination to reproduce 2b reproduce only asexually 3b cannot move about freely?
Answer:
1a and 3b.
Explanation:
I don't know if I read that right, but dandelion tufts blow away and plant because of the wind, otherwise they cant move freely.
Answer:
1. 1a White tuft of dandelion seeds
3b cannot move about freely
Explanation:
The White tuft of dandelion seeds refers to the feathery filaments and seeds. It is carried along with moving air away from the parent plant. The wind carries the seeds of dandelion to other places. Once the seeds find suitable substratum and growth conditions, they germinate and form a new plant.
Since plants can not move from one place to another in search of better growth conditions and substratum, they depend on air, water, other animals, etc. for dispersal of their seeds.
The exoskeleton of insects is made primarily of the inorganic material chitin. Which statement below accurately describes a consequence of this feature?
A. Insects must occasionally shed their exoskeleton to grow a new one.
B. The exoskeletons of insects grow along with them throughout their life span.
C. Insects can only grow as large as their hard exoskeletons allow.
D. Adult insects don't have an exoskeleton once they outgrow the one in which they were born.
Answer: A. Insects must occasionally shed their exoskeleton to grow a new one.
Explanation:
In the development process of insects from egg to adult form several intermediate stages occurs. In all immature insects the process of shedding of the skin and the exoskeleton takes place as the insect grows. The exoskeleton of the insect body does not expand as the insect grows it has to get shed and it get replaced with a new and large size exoskeleton. This allows the proper growth of the insect.
(NEED HELP FAST) The amount of energy required to break a nucleus into individual protons and neutrons is called
A)mass-energy equivalence
B)mass defect
C)binding energy
D)mass-energy conservation
Answer:
The answer is C
Explanation:
The amount of energy required to break a nucleus into individual protons and neutrons is called binding energy.
What is atom?
Atoms consist of a positively charged nucleus consisting of protons and neutrons surrounded by a cloud of electrons charged negatively. An atom is any particle of matter at its most basic level which contains at least one proton.
Nuclear binding energy is the energy required to separate an atomic nucleus completely into its constituent protons and neutrons, the energy that would be liberated by combining individual protons and neutrons into a single nucleus.
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What is the taking in of food is called
Answer:
Digesting / digested
Explanation:
I think that's what it's called.
Answer:
Eating or digestion
Explanation:
When you put food in your mouth and it digestives it's called eating. When food goes through the digestive system you get energy. Everyone does it and needs it to survive. Ex. right now i'm eating pretzels and considering eating chips.
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What problem would a person most likely have if her kidney did not work
correctly?
They would most likely suffer from blood problems and/or urination problems
The layer of the atmosphere that contains the ionsphere is the blank
Hello There!
This is called the "Thermosphere"
The thermosphere is the biggest part of the Earth's atmosphere. This layer is very important because it protects us on earth from UV radiation. UV radiation is harmful for humans skin and their hair. It is also extremely hard to breathe in this layer because the thermosphere is made up of mostly nitrogen and oxygen.
a diploid human cell contain 46 chromosomes if such a cell under go mitosis then how many chromosome will be present in the daughter cells if it has just passed through telophase
Answer:
The daughter cells will have equal number of chromosomes like that of parent cell i.e. 46.
Explanation:
Mitosis is a process of division that creates two new daughter cells with same genetic material and thus equal number of chromosomes. It involves: Prophase, Metaphase, Anaphase, Telophase and at the end cytokine.
In prophase, the nuclear envelope of the cell breaks down along with chromosome condensation. In metaphase, the condensed chromosomes line up at equatorial plate. In anaphase, the sister chromatids of lined chromosomes are pulled towards the opposite poles. While in telophase the cell is ready for division, its nearly dividing stage in which the cell retains its normal structures.
Transmission electron microscope are best for viewing
A) microorganisms in pond water
B) internal organs of a mouse
C)internal structures of a cell
D) surface features of a specimen
Answer:
D
Explanation:
Answer:
option C). internal structures of a cell.'
Explanation:
Explain what would happen to the atmosphere in the absence of sunlight. Give two supporting details for your answer and use complete sentences.
Can someone help me with this please.
Answer:
In the absence of sunlight the plants which are dependent on sunlight for making food that is photosynthesis would die.
Also the people will suffer as sunlight is a good source of Vitamin D and in absence of sunlight they will not get it so easily.
Which statement is correct?
The number of electrons of a neutral atom always equals the number of protons.
The number of neutrons always equals the number of protons.
The number of neutrons always equals the number of electrons.
Atomic weight is identical to atomic mass.
Answer:The number of electrons of a neutral atom always equals the number of protons
Explanation:
Answer:
The number of electrons of a neutral atom always equals the number of protons.
Michelle is toilet training her young daughter. The child will probably be most successful with toilet training if Michelle rewards her based on
a) spontaneous recovery
b) respondent behavior
c) a conditioned stimulus
d) successive approximaitons
Answer:
d) successive approximations
Explanation:
Answer:
Option D, Successive Approximations
Explanation:
Successive approximation are series of rewards given to an individual to positively reinforce the behavioral changes in an individual in order to motivate him /her to move towards achieving the final desired behaviour.
In case if Michelle give rewards to her daughter at each steps of the toilet training activity, then she will be inspired/motivated to do her task efficiently and faster.
Hence, option D is correct.
Which is a group of tissues that work together to carry out a common function?
cell
organ
organelle
organ system
Answer:
organ
Explanation:
An organ is a group of tissues that work together to carry out a common function?.
Answer:
organ
Explanation:
Approximately 60% of human genes are also found in fruit flies. About 97.5% of human genes are also found in mice. What does this evidence suggest?
A.) Humans and mice share a more recent common ancestor than do humans and fruit flies.
B.) Mice have had more mutations and recombinations during their evolution than fruit flies.
C.) Mice and fruit flies share a more recent common ancestor with each other than with humans.
D.) Fruit flies have had more mutations and recombinations during their evolution than mice.
A
Explanation:
I believe this because there is more of a percentage with mice then fruit flies
Humans and mice share a more recent common ancestor than do humans and fruit flies, suggest about 97.5% of human genes are also found in mice, hence option A is correct.
What is the evolution of humans?According to comparisons of anatomy and genetics, scientists usually concur that, among the living animals in this category, humans are most closely related to chimpanzees.
Each and every other living thing on earth shares the same DNA as humans. They are most closely linked to chimpanzees and bonobos, with whom they share 98.7 percent of their DNA.
Additionally, they have more than 50% DNA in common with produce like bananas and insects like fruit flies.
It is assumed that the last common progenitor of humans and chimpanzees is much more recent than the last common ancestor of humans and plants.
Based on the fact that there are more similarities between humans and chimpanzees than between humans and plants.
Therefore, option A is correct.
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Which of the following diagrams best represents a mixture?
A.
image
B.
image
C.
image
D.
image
Help Pleaseeee
Answer:
b
Explanation:
The greatest way to illustrate mixtures in chemistry is to physically mix several compounds together. Diagram A is the most accurate representation of mixture.
Option A is therefore correct
How do we explain?Combinations that physically blend forms of substances that do not exhibit chemical bonding and may be separated using physical methods are referred to as mixtures. The materials are not all the same. Examples of mixtures are gases and sugar or salt that has been dissolved in water.
The heterogeneous mixture is referred to as varied, and the uniform composition is referred to as homogeneous. Unlike the previous pictures, which show compounds and molecules, the first diagram shows a mixture since it is composed of different subtypes.
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Oxygen is a reactant in cellular respiration. Which term best describes oxygen
in photosynthesis?
Answer:
ANSWER: Oxygen is a product of photosynthesis.
Explanation:
Photosynthesis is a chemical reaction that occurs in plants. Photosynthesis uses ATP energy from sunlight to convert Carbon Dioxide and Water into Glucose. Oxygen is also formed during photosynthesis.
Oxygen is the product of photosynthesis, where water and carbon dioxide are the reactants and G3P and oxygen are the products. This contrasts with cellular respiration, where oxygen is a reactant.
Explanation:When it comes to the role of oxygen in photosynthesis, it is best described as a product rather than a reactant. In the process of photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) and, using the energy from sunlight, convert these reactants into glucose (C6H12O6) and oxygen (O2). The correct statement among the options provided would be option (b), which states that in photosynthesis, chlorophyll, water, and carbon dioxide are reactants, while G3P (glyceraldehyde-3-phosphate) and oxygen are products.
This contradicts the role of oxygen in cellular respiration, where oxygen serves as a critical reactant. In cellular respiration, oxygen is used to break down glucose, producing ATP, water, and carbon dioxide as waste products.
A forest fire destroys an area. A small population of trees and a large population of birds are both affected. Which type of limiting factor causes this?
density dependent
density independent
population dependent
population independen
The correct answer is B. Density independent
Explanation:
In biology, factors that limit a population are known as density limiting factors. These factors are classified into density-dependent if they affect populations with a high density such as predation or food availability or as independent if they affect different populations of animals despite their density which includes mainly disasters such as fires or floods.
This means the forest fire described is a density-independent factor because the population of birds and trees were reduced or limited but this did not occur because of the density of the population as all species in the forest are affected no matter if the population if high or low.
Some animals that live in the desert don't move often, if at all, during the day in order to conserve water and energy. This seasonal
behavior is best described as which of the following?
Answer:
Estivation
Explanation:
Estivation is like hibernation where the animal stays dormant to lower metabolic rate, or in other words conserve energy. It is different from hibernation because unlike hibernation which is done during cold seasons, estivation is an adaptation to hot seasons or hot days.
Answer:
C) Estivation
Explanation:
PLS HELP !!!!!! The table below shows the role of different substances during photosynthesis.
Substance Role During Photosynthesis
Glucose Stores chemical energy
Water Combines with glucose to form carbon dioxide
Chlorophyll Traps sunlight
Which of the following statements would correct one of the roles listed in the table?
Glucose combines with carbon to form water.
Chlorophyll reacts with light to produce carbon dioxide.
Water combines with carbon dioxide during photosynthesis.
Chlorophyll stores chemical energy needed for photosynthesis.
The correct statement that should replace the incorrect one in the table is 'Water combines with carbon dioxide during photosynthesis'. This process uses water and carbon dioxide to produce glucose and oxygen under the influence of sunlight and chlorophyll.
Explanation:In the table about the role of different substances during photosynthesis, there is a mistake. The role of water is incorrectly listed. The correct statement should be 'Water combines with carbon dioxide during photosynthesis'. In this process, water and carbon dioxide are used to produce glucose and oxygen under the influence of sunlight and chlorophyll. Glucose is the form in which the energy from the sun is stored, and oxygen is the byproduct of the process.
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At 47 months, Amalia is not only able to make circles but also able to draw a girl and label her parts, such as legs, arms, eyes, and nose. This example shows that Amalia has developed ______ motor coordination that is ________ her peers at this age.
At 47 months, Amalia is not only able to make circles but also able to draw a girl and label her parts, such as legs, arms, eyes, and nose. This example shows that Amalia has developed fine motor coordination that is typical of her peers at this age.
Answer:
The correct words would be - 1) fine, and 2) typical of.
Explanation:
Fine motor skills or coordination are the skills that suggest that involves using motor skills which is refined use of small muscles that help a child to hold something small movements in fingers and thumbs.
These fine motor skills involved writing, drawing, holding something with fingers and thumb and blinking and other activities. It is typical in the age of four approximately.
Thus, the correct answer is - 1) fine, and 2) typical of.
a blank contains all the instructions that are needed to build an organism
Answer:
protein
Explanation:
Proteins are constructed from an organism's DNA, which the DNA makes the RNA, which makes proteins. These proteins conduct the basic functions for the organism.
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Which structure is found in all cells?
Answer:
All cells have a plasma membrane, ribosomes, cytoplasm, and DNA.
Explanation:
The structures that are found in all types of cells are the cell membrane, ribosomes, cytoplasm, and DNA\
In biology, the smallest unit can live on its own and that makes up all living organisms and the tissues of the body. A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm. The cell membrane surrounds the cell and controls the substances that go into and out of the cell. The nucleus is a structure inside the cell that contains the nucleolus and most of the cell’s DNA. It is also where most RNA is made. The cytoplasm is the fluid inside the cell. It contains other tiny cell parts that have specific functions, including the Golgi complex, the mitochondria, and the endoplasmic reticulum. The cytoplasm is where most chemical reactions take place and where most proteins are made. The human body has more than 30 trillion cells.
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What would most likely happen if a person increased the amount of saturated fat in his or her diet?
The person's risk of cardiovascular disease would increase.
The person's risk of cardiovascular disease would decrease.
The person's bad cholesterol would decrease.
The person’s good cholesterol would increase.
Answer:
The person's risk of cardiovascular disease would increase.
Explanation:
saturated refers to all single bonds in the hydrocarbon chain, meaning no kinks in the chain. The hydrocarbon has the most number of carbons it can have, as there are all single bonds. If the hydrocarbon has even one less carbon, there would be kink, and it would be unsaturated and liquid. Our body needs less carbon, so unsaturated fats are better. But having saturated fats means no liquid, rather solid, which means harder for the blood to get to the heart. So your risk would cardiovascular disease would increase
Answer:
a
Explanation:
What happens when two nitrogen atoms share electrons
Your answer would be A, they form a covalent bond.
We can rule out B and C, as they require completely different elements. An oxygen molecule is made up of what it sounds like, oxygen, and a water molecule, 2 hydrogens and 1 oxygen. Therefore, it is neither of these.
When you look at the two other choices, you can see they are both bond types. An ionic bond is the exchange of an electron and the subsequent attraction between the positive and negative charges, while a covalent bond is the sharing of electrons. When you look at the question, it specifically states "when they share electrons", meaning that the bond that forms is a covalent bond.
Hope this helped!
Answer:
A. THEY FORM A COVALENT BOND
Explanation:
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a structure that is found in a plant cell and not in an animal cell is a ?
central vacuole
mitochondrion
nucleus
ribosome
A structure that is found in a plant cell and not in an animal cell is a central vacuole.
Option A
Explanation:
Plant cells are different from animal cells because a large central vacuole is present in the plant cell which is filled with water and salts to create a turgor pressure which gives the cell the physical strength to overcome the water pressure. The central vacuoles are not present in the animal cells but there are small vesicles which transports the molecules from surface to cytoplasm or vice versa.
The thermostat in a house regulates heat. When the air in a room reaches a predetermined temperature, the thermostat turns off the heat. What type of example is this?
positive feedback
negative feedback
neutral feedback
Answer:
neutral feedback