BIOLOGY HIGH SCHOOL

when a toxic waste site is listed by the U.S government who is initially responsible for cleaning up site

Answers

Answer 1
Answer:  Environmental Protection Agency (EPA) uses clean up authorities independently to address clean up situation: 
-Under Superfund, or CERCLA, they find companies or the people responsible for contamination and negotiates with them to clean up the site.
-Resource Conservation and Recovery Act (RCRA) provides EPA with enforcements authorities to ensure the sites are clean up.

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How do aggregate fruits develop

Answers

Aggregate fruits are created from several carpels that was from the same flowers. Strawberries and raspberries are examples of this type of fruit. Aggregate fruits are made from a compilation of flower blossoms. Many ovaries from a single flower would develop a fruit once they are merged.

Several blossoms on a flower stick together and develop into a single fruit.

*Works for Plato*

Cougars are predators that often eat weakened or diseased animals. This is a descriptionof the _____ of cougars.

Habitat,
niche,
community
or none of these.

Answers

Answer:

The answer is Niche

Answer:

B.) Niche! Have a good day! :)

Explanation:

Which statement about enzymes is true

Answers

Enzymes don't take part in a reaction but just speeds up a reaction

Answer:

Explanation:

Enzymes don't take part in a reaction but just speeds up a reaction

radio waves travel into space at the speed of light for 15 minutes. How far out in space did they travel in meters

Answers

To determine how far the radio waves traveled in space in meters, we can use the fact that radio waves travel at the speed of light.

The speed of light is approximately 299,792,458 meters per second.

Given that the radio waves traveled for 15 minutes, we need to convert minutes to seconds. There are 60 seconds in a minute.

So, the total time the radio waves traveled is 15 minutes x 60 seconds/minute = 900 seconds.

To find the distance traveled, we can multiply the speed of light by the time:

299,792,458 meters/second x 900 seconds = 269,813,212,200 meters.

Therefore, the radio waves traveled approximately 269,813,212,200 meters into space.

Pioneer plant species could be described as those that

Answers

Pioneer plant species are the first species in an area that has little to no soil. For example, lichens and mosses are pioneer species that grow in rocky areas. They break down the rock, and the organic matter from when they die helps create the fertile soil that other plants need to grow.
Hope I helped! :) Good luck.

3) A variable that is kept the same during an experiment is a(n) __________.A. control variable
B. extraneous variable
C. control group
D. dependent variable
E. independent variable

4) A variable that is purposefully changed in an experiment is a(n) __________.
A. control group
B. independent variable
C. control variable
D. extraneous variable
E. dependent variable

5) A variable that is changed, depending on the change in the independent variable is a(n) __________.
A. dependent variable
B .control variable
C. control group
D. extraneous variable
E. independent variable

Answers

A variable that is kept the same during an experiment is a controlled variable. Thus, the correct option for this question is A.

A variable that is purposefully changed in an experiment is an independent variable. Thus, the correct option for this question is B.

A variable that is changed, depending on the change in the independent variable is a dependent variable. Thus, the correct option for this question is A.

What do you mean by Variables?

In experimental science, variables may be defined as a type of factor or information that can be changed during the course of an experiment. It is a type of factor that can be manipulated, controlled for, or measured in an experiment.

In experimental science, there are three types of variables are used. They are as follows:

  • Independent variable: A variable that can be altered during a scientific experiment.
  • Dependent variable: A variable that can be tested or measured during a scientific experiment.
  • Controlled variable: A variable that can be kept constant during a scientific experiment.

To learn more about Variables, refer to the link:

brainly.com/question/82796

#SPJ1
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A water solution that has the same salt concentration as the cells is said to be _____. hypotonic isotonic
What stomach secretion is necessary for normal hemoglobin production in RBCs?A. HCl B. pepsinogen C. intrinsic factor D. gastric lipase