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There are a lot of endangered animals in this world, and the numbers are increasing constantly as their habitats are destroyed by global warming and urbanizing humans.

When you hear a phone number and write it down, your brain uses:?

What measurement unit describes the amount of energy food contains?

You are testing a chemical that you suspect is a mutagen. You set up an AMES test, and for your control (without the mutagen added to the bacterial culture) you observed only a few colonies.

Two steel balls that are the same mass and size are rolled with the same force across different level surfaces. The ball rolling across carpet will come to a stop faster than the one rolling across concrete because of A) air resistance. B) friction.

The shape and size of a birds beak would mostly be affected by what environmental limiting factor

Why do you think scientists use the word mutate to describe the genetic process shown in the video

Which best describes the purpose of a controlled experiment? A. to make sure the results of the experiment support the hypothesis B. to prevent a dangerous condition resulting from a reaction C.

Bones, joints, ligaments, and cartilage are parts of the a) refrigerator b) muscles c) skeleton

Chloroplasts cannot move on their own. How do they move around the cell?