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What is the ethical value of using a model organism, such as zebrafish for doing marine research on pathogens?

The organism can prevent diseases from being transmitted from one species to another, thereby reducing fish mortality.

The organism is immune to all diseases, so the effectiveness of new treatments can be studied over long periods of time.

The organism produces chemicals that can be extracted for use as antibiotics, so they are economically important.

The organism shares its physiology with humans, so testing of new drugs can be done without hurting people.

I need help asap!!!!!!!!!!!!!!!!!!!!!!!!

Which of the following best describes the likely impact of an invasive plant species on a warm ecosystem?


The invasive plant species become carnivores since their normal food source is eaten by the native producers. The invasive plant species eat other consumers in the ecosystem, causing a decrease in the consumer population of the ecosystem.
The invasive plant species become carnivores, since their normal food source is eaten by the native producers. The invasive plant species eat other consumers in the ecosystem, causing a decrease in the consumer population of the ecosystem.

The invasive plant species prevents native producers from doing photosynthesis. Native producers go extinct, but the consumer population increases as a result.
The invasive plant species prevents native producers from doing photosynthesis. Native producers go extinct, but the consumer population increases as a result.

The invasive plant species take over resources used by native plant species. Some plant species decrease in population, affecting the food source for consumers in the ecosystem.
The invasive plant species take over resources used by native plant species. Some plant species decrease in population, affecting the food source for consumers in the ecosystem.

The invasive plant species become decomposers since the ecosystem already has native producers. All other decomposers go extinct in the ecosystem, replaced by invasive plant species.

Zoe takes a boat out of Miami (25° North latitude). Using what you know about the global winds, which direction is she most likely to sail?
A. from west to east
B. from east to west
C. from north to south
D. in a circular pattern

PLEASEE ANSWER BEFORE FRIDAY APRIL 30 Seven students looked at a barometer, a weather device that measures air pressure. They had different ideas about air pressure. This is what they
thought:
Kimberly:
Glenn:
Rae:
Jeff:
Oliver:
I think air has to be moving to create air pressure.
Air pressure is a downward force.
The higher in the atmosphere, the greater the air pressure.
Air pressure is the same in all directions.
Air pressure increases as the number of air particles increases.
Warm air masses have higher pressure than cool air masses.
When air pressure decreases, it might rain or snow.
Cameron:
Jay:
Circle the names of the students you agree with and describe why you
agree. Describe your ideas about air pressure.

why is starch not absorbed in the small intestine

The changing appearance of the Moon during the lunar cycle is the result of the changing –


A. amounts of light emitted by the Moon.

B. relative positions of Earth, the Moon, and the Sun.

C. Earth’s shadow on the surface of the Moon.

D. gravitational pull of the Moon as it orbits Earth.

Explain how the brain regulates metabolism.

What is the embryo?

A. The roots of the plant
B. The tiny miniature plant
C. The protection for the plant
D. The food the plant will use

I need help with this!! Questions are in the picture!! Feel free to only do 1 or 2 questions!! Doing all is really really appreciated tho!!

30POINTS!!!!!
Scenes of outer space explosions in movies are often accompanied by a loud sound. Which of the following best describes why a scene like this is not realistic?
A.
Sound is not produced when something explodes in air.
B.
Sound can travel through a vacuum.
C.
Sound needs a medium through which it can be transmitted.
D.
Sound cannot produce vibrations.

Which arrow or arrows represent a release of carbon dioxide? What process is occurring at the arrow(s) you selected?

Write a paragraph (4-5 sentences) explaining how natural selection and selective breeding are related?

What are the scientific goals for the Mars Science Laboratory?

1.what kinds of technology to use for landing, what kind of instruments to use on the rover, how to power the rover, and how to control the Mars Science Laboratory

2.correcting the packaging of the MSL mission components that has been the essential technology of all space missions

3.what kinds of technology to use for landing, what kind of instruments to use on the rover, how to power the rover and how to control the Mars Science Laboratory

completing the technology design process and constructing an MSL prototype that would successfully land on Mars

4.to determine if Mars could have ever supported life, study the climate and geology, gain knowledge for a future manned mission to Mars

HELP ME PLEASE HELP MEEEE

There is a relationship between breathing and cellular respiration. Breathing involves taking in oxygen and releasing carbon dioxide. How does the oxygen affect the process of cellular respiration?

> Oxygen and ATP combine to produce energy in the form of carbon dioxide.
> Oxygen and glucose combine to produce energy in the form of ATP molecules.
> Oxygen and hydrogen combine to produce energy in the form of ATP molecules.
> Oxygen and carbon dioxide combine to produce energy in the form of ATP molecules.

Highly organized systems like living cells should have _____.

a. High energy

b. High entropy

c. Low entropy

d. Low energy

I need two body systems that work together and an example

*50 POINTS*

A scientist genetically engineered a grain cereal. The genetically engineered variety can produce its own vitamins and is drought resistant. What is the likely impact of growing such a cereal crop on the society?

May trigger an adverse climate change
May worsen the water crisis around the world
Would be beneficial for the malnourished population
Would increase the shortage of food around the world

Which is a limitation of a scientific model?

A

B

C

D

Why would food sources be limited without animals

10 points people, imma give a brainiest to whoever has best answer.

27 points
Please need help

The picture shows a Single-celled organism that has a nucleus and organelles, lacks a cell wall, and obtains food by eating other organisms. The organism also has cilia that it uses to move through water. Which kingdom should this organism be classified?
Science

What are genes and what do they control?

Required The measure of the average thermal energy of a substance is * O heat O matter O temperature​

The sea aneome reproduces and the Hydra uses a different asexual process.
True or False.
pls answer this seriously thx.

Seed Germination Investigation
 The students are to investigate the process of seed germination during their summer
vacation.
 They will select different types of seeds, such as beans, peas, or sunflower seeds.
 Encourage students to set up a germination experiment by placing the seeds in
different conditions, such as light vs. dark, or wet vs. dry. Moreover, they need to
pot the same seed in more than one pots.
 They should observe and document the changes that occur over time, including the
emergence of roots and shoots.

PLEASE HELP!!
Analyze the given diagram of the carbon cycle below.

an image of carbon cycle is shown. the sun, a cloud, two trees, one on the left and the other on the right, an animal, lake, and a factory are shown in the image. an arrow is shown from the sun towards the left tree marked a. the sun is marked b. there is an arrow from the air above the clouds, marked c, towards the left tree. an arrow from a location close to the ground marked d points towards dead organisms, which is a label under the animal. an arrow marked e points from the right tree straight up to the clouds. an arrow marked f points from the animal straight up to the clouds. an arrow marked g points from the factory towards the air above the clouds, c. there is an arrow pointing from the air to the lake labeled carbonates in water, an arrow pointing down from dead organisms to fossils and fossil fuels, and an arrow from fossils to the factory. what compound does c represent

Part 1: Which compound does C represent?
Part 2: Name a process that could release this compound into the air.
Part 3: Explain how the elements that form it are conserved during the carbon cycle. Use complete sentences to explain your answer.

Justify how this compound was created from a recycling of carbon in the carbon cycle. Use complete sentences to explain your answer.

Environmental factors (biotic and abiotic), which determine the types and number of organisms of a species in an ecosystem, are called

Some new appliances, like refrigerators, stoves, dishwashers, and air conditioners may have the Energy Star label if they meet certain high-efficiency standards.

Think about the electrical appliances you use in your home. Remember that video game consoles, computers, televisions, and DVD players all use electricity, too. What are some ways that you could reduce the amount of electricity that you and your family use? Explain how you could change some of your energy-use habits and the benefits those changes might have on climate change.

cells that have a nucleus, membrane-bound organelles, and more complexity are called what?