A group of scientists have been studying a population of sea stars over 100 years. In year 1900 a scientist measured the arm length (cm) of 11 sea starts. Then in year 1950 another scientist measured the arm length(cm) of 11 new sea stars. Then in year 2000 another scientist measured the arm length(cm) of 11 new sea stars. You have access to their work and will be assisting the scientists by charting their findings and answering questions about the data they have collected.


Fill in frequency table: The Data Table gives the arm lengths(cm) for a sample of sea stars in a given year. Using the arm length(cm) from the Data Table, count the number of sea stars that fall in each size range. The first three numbers in year 1900 have been filled in for you.

Answer:

The correct option is C) 1 only

Explanation:

It would be necessary to ask from the scientist about the group of people  on which he performed his experiment because it might be that certain other factor was the influence for the change in the requirement of Vitamin E, It might be that the people of that specific area or country might have a Vitamin E deficiency due to which there requirement was more for Vitamin E. Or there might be any other environmental or genetic factor influencing the change.

Answer:

People can save their local watershed by conserving water from their yards and driveways.

Explanation:

Local watersheds can be protected by not adding toxic household material , reusing the water for other household purposes etc.

Removal trash and invasive species in vegetation are the two precautions.

Pick up the trash and remove invasive species are the two precautions people can take in their yard and driveway to help protect their local watershed. Trash or garbage can cause big problem in the way of watershed.

Healthy watersheds provide services to ecosystem such as nutrient cycling, carbon storage, erosion, control, increased biodiversity, soil formation, water storage, water filtration, flood control, timber and recreation so these two precautions are important for protection of of  watershed.

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Answer:

Models help us to get a better understanding of structures and processes which otherwise would have been difficult to understand. Models illustrate structures ans processes  in the form of chemical equation, mathematical equations, computer simulations, drawings etc.

The building of a carbon molecule will help us understand the structure of a carbon atom and the various bonds that it can form, The model will be able to depict the various ways in which the electronic configuration of the carbon atom can change to form different compounds.

Answer:

D. it reduces pest insect population

Question: In The Divine Comedy, Dante Alighieri uses poetry to explore

A. the simplicity of human nature.

B. the complexity of human nature.

C. the existence of life after death.

D. the power of political turmoil.

Answer:

In the divine comedy dante alighieri uses poverty  explore "The existence of life after death."

Explanation:

In his story of the poem recollected as the Divine Comedy, Dante imagines a imaginary story of himself who voyages over the particularly spreads of hell, amends, and Ecstasy. Several structures that he calls laterally this voyage have leftward an lasting influence on the Western supposed for more than half a period.  In fact, the somewhat conventional pictures of the hereafter clarified are all depicted in his effort. But Dante also found novel ways to depict previously well-formed thoughts, thus further setting them while also redesigning them into new entrances that would develop common to uncountable ages that convoyed.

Answer:

In The Divine Comedy, Dante Alighieri uses poetry to explore the existence of life after death.

The Divine Comedy is an Italian long narrative poem by Dante Alighieri.

The narrative deals with Dante's travels through Hell, Purgatory, and Paradise or Heaven, while allegorically the poem represents the soul's journey towards God. Dante insipired on medieval Christian theology and philosophy, especially Thomistic philosophy and the Summa Theologica of Thomas Aquinas.

Explanation:

Cypris is a heterotroph.

Explanation:

Cypris are the members of kingdom Animalia which are multicellular crustaceans. These organisms are both marine and fresh water, but most of them are fresh water pond dwellers. They are microscopic, which needs to be seen through microscope at 40x for proper visualization.

Cypris are heterotrophs which live in the debris below the water bodies and collect their food from them only. They are covered by 2 shells, and a pair of antennae and limbs project out of the body. They are easily eaten by hydra and small fishes as delicious food.

Answer:

Dominant Trait

Explanation:

The Dominant trait is well, dominant, and therefore over powers the recessive trait most of the time.

Explanation:

Psychology broadly includes the scientific study of the mind and human behavior and contains many sub specialties which include: clinical human development, social behavior, and the human cognitive process.

Gestalt psychology considers the mind and body together as a unit. Specifically it focuses on the notion of perception in humans as distinct from seeing- our expectations and individual motivations have an influence on perception too.

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A keloid is an excessive, abnormally large scar caused by an overproduction of collagen that exceeds the original wound and may continue to grow even after it has healed.

The excessive, abnormally large scar referred to in the question is known as a keloid. Unlike a callus, corn, or cicatrix, which are all common types of scar formations, a keloid forms when the healing process in the skin extends beyond the original wound, resulting in a large raised scar. This is due to an overproduction of collagen, creating a smooth, hard growth. It is important to note that keloids may continue to grow long after the wound has healed.

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All organisms, including plants, undergo what essential process?

A. Photosynthesis

B. Cellular Respiration.

C. Sexual reproduction.

All the living organisms undergo cellular respiration.

Option B

Cellular respiration is the process of production of energy from food. This process includes different chemical reactions which squeeze out energy from the food and store that in form of Adenosine Tri Phosphate for the cells to use in future. Thus without cellular respiration, a cell can't survive.

Now the photosynthesis is only restricted within a group of autotrophs which contains chlorophyll and can use Sun's energy to produce glucose from carbon dioxide and water.

Sexual reproduction is also not a feature of many lower organisms like bacteria which divide by means of binary fusion.

Complete Question: Which sentence supports the statement that complex, multicellular organisms are made up of specialized cells that each perform different functions for the body?

A. Human liver cells make proteins that promote homeostasis that neurons do not.

B. Different species of bacteria have different shapes and structures to their cells.

C. The DNA in the cell nucleus of chimpanzees and humans are 98% identical.

D. Prokaryotes do not have nuclei, but they can still carry out the basic functions of life.

Answer:  

A. Human liver cells make proteins that promote homeostasis that neurons do not.  

Complex multicellular organisms are made up of different cells which are combined to form the non-identical organs and tissues e.g (heart, liver etc.) .These organs carry out totally different function for the sustenance of organism.

Some plants that grow on forest floors where there isn't much light have bigger ecological advantages.

Explanation:

Some of the plants that grow on the forest floor do not get ample amount of sunlight. Sunlight is required for the process of photosynthesis. These plants are less in number a lot of purposes. They become food for the herbivorous animals push up they also supply cheap form of wood for construction purposes. They also provide the support system for epiphytes and other climbers.

Answer:

is C

Explanation:

Teoría cinética molecular. Las leyes de los gases desarrolladas por Boyle, Charles y Gay-Lussac, que establecieron las principales relaciones entre la presión, el volumen y la temperatura de un gas, están basadas en observaciones empíricas y describen el comportamiento de los gases en términos macroscópicos.

The statement which best describes the Kinetic Theory Model is that When particles in matter gain or lose energy, they change state. Thus, the correct option for this question is C.

The kinetic theory model may be defined as a type of theory that significantly states that all matter is composed of particles in motion and that the rate of motion varies directly with the temperature. As the temperature rises, the movement of particles gradually increases.

According to this theory model, the molecular composition of the gas is in terms of a large number of submicroscopic particles which include atoms and molecules. Further, the theory explains that gas pressure arises due to particles colliding with each other and the walls of the container.

Therefore, when particles in matter gain or lose energy, they would definitely change state with respect to the energy that is administered to them. Thus, the correct option for this question is C.

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Answer:

I'm pretty certain its C, but I'm not a science wiz. It is 100% not a or b though cause they dont have cell walls

The correct option is C. They allow nutrients through cell membrane.

Cell is the basic unit of life. There are two kinds of cell such as prokaryotic cell and eukaryotic cell. Bacterial cell is a prokaryotic cell. Humans are example of eukaryotic cell.

Cell is surrounded by plasma membrane or cell membrane. Plasma membrane allow nutrients through cell membrane.

In addition to defining the cell's borders, the plasma membrane also enables the cell to interact with its surroundings in a controlled manner.

Therefore, The correct option is C. They allow nutrients through cell membrane.

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Answer:

Incomplete metamorphosis

Explanation:

Because there's no egg in the beginning

Answer:Its Absolute Dating

Explanation:

absolute dating methods provide chronological estimates of the age of certain geological materials associated with fossils, and even direct age measurements of the fossil material itself.

Its a sex linked disorder and it makes stopping the bleeding slower in affected individuals.

Hemophilia is a sex linked recessive disorder which occurs due to a gene present in the X chromosome. The presence of this gene in males surely make the individual hemophilic because the Y chromosome doesn't contain any dominant factor of this gene. In females, the recessive individuals become carriers without expression of this gene. Only the dominant individuals in females expresses Hemophilia.

Its a disease where the Christmas factor (Factor IX) or the antihemophilic factor(Factor VIII) is absent in the affected individual. This makes the cascade theory incomplete and there's a defect in blood clotting in both the intrinsic and extrinsic pathways. Thus the persons if starts bleeding, loses a lot of blood before coming to a stability.

Answer:C.) It is an example of a sex-linked disorder.  E.) It is a disease in which a person has trouble stopping bleeding.

Explanation:

Answer:

A scientific theory is an explanation of an aspect of the natural world that can be repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. Where possible, theories are tested under controlled conditions in an experiment.

Explanation:

Answer:

D. Cytoplasm.

Answer:

The area that includes everything between the cell membrane and the nucleus of a cell is called the CYTOPLASM

Explanation:

Cytoplasm includes everything in the cell and outside the nucleus of that cell

A change in gene sequence can lead to a different amino acid being added to a polypeptide chain instead of the normal one. This causes a change in protein structure and function.

Answer:

Viperfish hunt by attracting prey to their glowing bellies. This adaptation is most useful for the open-ocean ecosystem.

Explanation:

In the open ocean ecosystem, not much diversity of organisms is present. In order to survive in the open ocean, an organism must have certain adaptations which will allow it to get the basic resources needed for survival. If adaptations are not provided, organisms will nor be able to survive in the open ocean ecosystem.

The adaptation of glowing bellies in the viperfish allows it to attract its preys due to which it is able to get food and survive in the open ocean ecosystem.

The cactus and brittle bush get their energy from sunlight because they are plants and use photosynthesis to make their own food.

Final answer:

Plants, algae, and some bacteria are the producers in the food web that receive their energy directly from sunlight.

Explanation:

Producers in a food web are organisms that conduct photosynthesis or synthesize sugars through other means, such as plants, algae, and some bacteria. These organisms obtain their energy directly from sunlight and convert it into usable chemical energy. Consumers, on the other hand, rely on producers, either directly or indirectly, for their energy. They include animals, fungi, and various microorganisms. For example, a deer receives its energy by eating plants, which in turn obtained their energy from sunlight. Therefore, the producers in the food web that receive their energy directly from sunlight are the plants, algae, and some bacteria.

Answer:

Explanation:

Inside a cell, numerous organelles function to remove wastes. One of the key organelles involved in digestion and waste removal is the lysosome. Lysosomes are organelles that contain digestive enzymes. They digest excess or worn out organelles, food particles, and engulfed viruses or bacteria.

Answer:

When a heterozygous male and homozygous female plants are cross-pollinated the genotypic ratio of the offspring will be tt, Tt

Explanation:

In a pea plant, when the heterozygous male plant (Tt) is cross-pollinated with homozygous female plant (tt) ;

T × t = Tt

t × t = tt

t × T = tT

t × t = tt

Therefore, the genotypic ratio of the offspring is short and tall (tt, Tt) because the dominance of tall trait is less that the short trait, indeed the chances of tall offspring is low.

Answer:

Somatic cells use mitosis

Explanation:

somatic cells are body cells or skin cells

Answer:

x= 0, y = 2

Explanation:

4x + 5y +2 = 12

Let's suppose that

x = 0

y = 2

By putting the values of x and y

4(0) + 5( 2) + 2  = 12

0 + 10 + 2 = 12

12 = 12

Hence, it is proved that x = 0 and y = 2

Answer:

The production of cement releases greenhouse gas emissions both directly and indirectly: the heating of limestone releases CO2 directly, while the burning of fossil fuels to heat the kiln indirectly results in CO2 emissions.

Explanation:

Answer: most likely D

Explanation:

A was close, B not it and C is only for heat use

Wind and moving water provide mechanical energy. They are renewable energy sources that harness the kinetic energy of natural movements to generate electricity. The correct answer is option (B).

Wind and moving water provide a form of energy known as mechanical energy. This type of energy is harnessed through the movement of turbines which convert the kinetic energy of wind or flowing water into electrical energy. Both forms of energy, wind power and hydroelectric power (hydroenergy), are considered renewable energy sources.

Winds and moving water are driven by the energy from the sun, which heats the Earth unevenly, causing wind, and evaporates water to high elevations, where it can later fall and flow due to gravity, powering turbines as it moves. This mechanism is similar across different forms of energy generation, such as fossil fuels, biofuels, nuclear energy, and solar thermal systems, where a spinning turbine creates an electric current.

Thus, the correct answer to the student's question is option B) mechanical energy.