Answer:
A by repeating the experiment several times
Explanation:
One of the main characteristics of the scientific research is the ability of running the experiments with the same circumstances and context several times, in order to be able to confirm the results of the research and by doing this if sometime a scientist gets a result too far away from the expected he can run again the experiment to see if the experiment wasn´t compromised.
Photosynthesis requries a supply of CO2 as well as H2O and sunlight. how do plants obtain these resources?
H2O is acquired by osmosis in the plants cells, and or through the stomata. CO2 is obtained in the way of the stomata.
What do you mean by osmosis?In biology, osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell's partially permeable membrane.
Moreover, the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane (one that blocks the passage of dissolved substances—i.e., solutes).
Hence, osmosis is the transport of a solvent through a semipermeable membrane that separates two solutions of differing solute concentration. During osmosis, the solvent moves from the solution that is lower in solute concentration to the solution that is higher in solute concentration.
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This rock, known as balanced rock sits on a thin spike of rock in s canyon in Idaho explain the forces that keep the rock balanced on its time pedestal
Which statement is true about oxygen and rocks?
Answer:
D. Oxygen is a pure substance and rocks are mixtures
Explanation:
I took the exam and got this right
URGENT PLEASE ANSWER
Why is it important that a pure water IV not be given to dehydrated patients?
What is the number in a chemical formula that tells the number of specific atoms in the molecule?
Carolina Bays along with cypress and gum ponds are important inland wetlands that provide habitat for a wide range of plants and animals. Carolina Bays tend to have some peat development, which is a layer of partially decomposed plant matter. Several Georgia Bays have peat deposits over 14 feet deep, the end product of about 9,000 years of plant decomposition and periodically, these peat deposits catch fire and burn usually about every 25 years. This fire plays an important role in the maintenance of Carolina Bays. How? A) The fires keep the Carolina Bay habitat from becoming overgrown with vegetation.
B) The fires in the Carolina Bays help to dissipate dangerous chemicals dissolved in the groundwater.
C) The fires in the Carolina Bay areas drive out invasive animal species that out-compete native species.
D) The fires throughout the Carolina Bays help to keep the plant species consistent throughout the states.
In one to three sentences, describe what happens during the reduction stage of the Calvin cycle.
ATP and NADPH transfer chemical energy to 3-PGA.
Glyceraldehyde 3-phosphate (G3P) is created.
G3P is used to make sugar.
The reduction stage is the second stage of the Calvin cycle in which the molecules of 3-phosphoglyceraldehyde are produced through the process of carbon fixation. These molecules are then converted into the simple sugar molecules known as glucose.
What is the Calvin cycle?The Calvin cycle may be defined as a type of dark reaction of photosynthesis that is light-independent. It occurs in the chloroplast of the plant and converts carbon dioxide into glucose.
The reduction stage of the Calvin cycle initiates with the transfer of chemical energy from the ATP and NADPH to 3-phosphoglyceraldehyde.
Therefore, it is well described above.
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Taconite is a low-grade iron ore that is found around Lake Superior. The iron-bearing rock is found interlaced with quartz, chert and other minerals. The iron is separated out of the taconite using magnets so that it can be processed to for use in the production of steel in nearby states. What statement does not represent a concern by the Department of Natural Resources about the use of taconite as a source of iron.
A) The process to separate iron from taconite requires transportation by large vehicles over public roads.
B) The separation of taconite involves chemicals that may lead to air and water and pollution.
C) The area where taconite is mined is characterized by wetlands and streams.
D) Taconite is a non-renewable resource.
Answer:
Option (D)
Explanation:
Taconite is a silica-rich and low-grade ore of iron. This iron ore was initially considered to be a waste rock due to the abundance of higher-grade natural iron ore. But now, with the decreasing amount of natural iron ore, the use of taconite is increasing. They are extremely hard rock and the iron ore present in this rock is extracted by the use of magnetism. Due to the heavier weight, these rocks are needed to be transported from one place to another using very heavy vehicles.
These rocks are obtained by the smelting process in which carbon is used to heat the iron ore. This emission of carbon into the atmosphere can contribute to pollution.
These rocks are usually found in the streams and wetland areas. They are abundantly present on earth and not a non-renewable resource.
Hence, the most appropriate answer is option (D).
Describe the different types of symmetry you can find in animals
your body's metabolism is regulated by _____.
The body's metabolism is regulated by the endocrine system, particularly through the hormones released by glands such as the pancreas and thyroid, and the pituitary gland.
Explanation:Your body's metabolism is primarily regulated by your endocrine system. The hormones released by glands in this system influence how your body uses and stores energy. Important ones include insulin from the pancreas, which helps cells absorb glucose and store it as energy, and thyroid hormones which influence the rate of your metabolism. Pituitary gland also plays a key role as it sends signals to other glands in the body about when to release their hormones. Remember, maintaining a balanced metabolism is essential for good health.
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what is true in a saturated solution A. No more solute can be dissolved B. No more solvent can be dissolved C. No more solution can be made D. The concentration cannot be decrease
If you stained both, onion cells and cheek cells what would stain the quickest and why?
Onion cells would stain quicker due to their thick cellulose wall that binds readily to stains, unlike the delicate plasma membrane of cheek cells.
Explanation:If you stain both, onion cells and cheek cells, the onion cells would stain quicker. This is largely due to the fact that onion cells have a thick and rigid cell wall made of cellulose, which readily binds to stains.
On the other hand, cheek cells are animal cells and have a thinner, more delicate plasma membrane, which can make staining more difficult and time-consuming.
This is especially evident when using a common biological stain like iodine. Iodine stains cellulose in the onion cell wall quickly, turning it a dark color that's easy to see under a microscope. In contrast, cheek cells, lacking cellulose walls, take longer to show reaction with the stain.
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use the diagram below to match the letter with the name of the layer.
1. inner core
2. outer core
3. mantle
4. crust
Earth is made up of different layers as shown in the given diagram. Here, A is inner core, B is outer core, C is mantle and D is crust.
What are the different layers of the Earth?The Earth consists of three layers, namely:
The crust.The mantle.The core.The crust is the outermost layer of the Earth mantle is the middle and core is the innermost layer of the Earth.
Thus, in the give diagram, A is inner core, B is outer core, C is mantle and D is crust.
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Robin holds a handful of damp soil in her hand. She rubs some of the soil between her fingers. The soil feels very soft and a lot like flour. It is not sticky. Her soil is MOST LIKELY
Robin holds a handful of damp soil in her hand. She rubs some of the soil between her fingers. The soil feels very soft and a lot like flour. It is not sticky. Her soil is MOST LIKELY
A) clay
B) loam
C) sand
D) silt
the answer is ( D ) silt
What land form is created when glaciers erode backwards into the mountainside and form a shape like a shallow bowl?
It's called a Cirque, or Corrie
Hope that's right and helps
Answer: Cirque
Explanation: Cirques are bowl shaped, circular depression that are formed at the top region of the mountains, due to the melting and erosion of glaciers. It is an erosional feature.
Cirques are separated from one another by aretes, that are steep narrow long ridges found at the top part of the mountain. The walls of this cirques are very steep and their diameter ranges upto a size of 1 kilometer.
the Diagram shows two water molecules.
what does the the dotted line between the water molecules represent?
A. a polar bond
B. a covalent bond
C. a hydrogen bond
D. an eletronegative bond
The correct answer is option C. a hydrogen bond.
The water is a polar molecule, in which the oxygen has a slight negative charge and the hydrogen has a slight positive charge. The positive charge of the hydrogen from one molecule attracts the negatively charged oxygen atom of another water molecule. As a result, an inter molecule hydrogen bonding is formed. Hence, the dotted line represents a hydrogen bond.
What is responsible for telling cells how to behave
Answer: Its DNA.
Explanation:
The genetic material of which all living beings are created recieves the name of DNA (deoxyribonucleic acid). It is present in living organism cells and it is the one that provides the instructions of what to do to the cell, it gives orders as of when a cell needs to grow, to do an specific function and how that cell would respond to its environment.
Explain the differences between internal and external fertilization and the advantages
and disadvantages of each reproductive strategy.
What are the evolutionary advantages of organisms that can photosynthesize?
Angle where a leaf stall joins the stem
an area of forest that experiences very little change in species composition is a?
What would happen to the respiratory system if the muscular system stopped working?
Water seeps inside cracks in a boulder and freezes. Over time, the crack expands and the boulder cracks in half. What process caused this change in the rock?
How is over-irrigation damaging to soil? a. It reduces the amount of organic material in soil. b. It results in the accumulation of salt near the soil surface. c. It increases the acidity of soil. d. It removes water from the water table. Please select the best answer from the choices provided A B C D
it is B.
It results in the accumulation of salt near the soil surface. hope this helps
Over irrigation is a mistake made by farmers which results in the accumulation of salt near the soil surface. Therefore, option (B) is correct.
What is over-irrigation?Farmers frequently overirrigate their fields, especially when soil moisture monitoring equipment is not being used.
Regular irrigation with too much water raises the groundwater level and produces more solvent salts. Salts from saline groundwater evaporate and condense on the soil's surface. Additionally, irrigation water becomes more salted as a result of canal water seepage.
Your soil's aeration and salinity are both impacted by excessive irrigation. It implies that your plants' roots will lose important nitrogen and absorb more salt. Your plants' and flowers' growth may be hampered by the fact that most plants dislike growing in saline soil.
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How does the shape of an ice cube affect the time it takes the ice cube to melt
Which of the following best describes an advantage of genetic engineering?
A. Can reduce long-term health problems among consumers of GMO
B. Increases regulation of sale and consumption of healthy food
C. Reduces harmful impact on natural ecosystem in the future
D. Can produce crops having high level of nutrition
Answer: D. Because crops produces a good level or nutrition giving it the advantage that genetic engineering has made.
plz comment below if this is correct hope i helped :)
Explanation:
The alteration of the natural gene sequence for better outcomes is called genetic engineering.
The tools which are used in genetic engineering is as follows:-
PlasmidDNA ligaseNucleaseVectorGenetic engineering is used to treat genetic diseases, help to make the plant free from diseases resistant and pest resistant. It also helps to increase the yield of the plant.
According to the question, the correct option is D that is Can produce crops having a high level of nutrition.
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Natural selection. Darwin hypothesized that there requisites for natural selection to occur and that there are definite steps to natural selection. Note the two models seen here. Both of the models illustrate an important requisite for natural selection. That is:
Answer:
In a population of bacteria, variations exist due to mutation. The bacteria are subjected to antibiotics. Some bacteria die; others survive and reproduce. Eventually, the bacteria a resistant to the antibiotics.
Explanation:
List two other facts you can learn from this graph.
Which of the following is a way Earth's life (biosphere) can be directly affected by pollution? A. acid rain B. precipitation C. climate change D. global warming
I took this quiz already and the answer was a
In order to make new nucleic acids, your body needs food that contains
Answer:
The correct answer will be- food containing nitrogen and phosphorus elements.
Explanation:
Nucleic acids are the macromolecules which are made up of monomer unit called nucleotides. The two nucleic acids are DNA and RNA present inside us.
Each nucleotide is made up of a five-carbon sugar, a phosphate group and four types of nitrogenous bases (adenine, guanine, cytosine and thymine). So the food should contain these elements mainly nitrogen and phosphorus to make nucleic acids.
The good source of food products which supply phosphorus is - Whole Grains, Chicken, Turkey, Pork, nuts and many more. The food products rich in purines and pyrimidines are sardines, mussels, crab, shrimp and many others.
Thus, food containing nitrogen and phosphorus elements is the correct answer.