Which organ makes the proteins that clot the blood?

Two populations that are separated by a mountain range can no longer interbreed to produce fertile offspring. this is an example of what

Which of the following is true of all greenhouse gases A) They are naturally occurring. B) They exist in fixed quantities. C) They trap energy in the atmosphere. D) They reflect incoming solar radiation.

How do scientists determine how to classify organisms?

As DNA is replicated, which DNA base pair will bond to cytosine? adenine thymine cytosine guanine

A zoo or aquarium can only be accredited if: It meets standards for animal management and care. Animals are provided variety in their daily routine. The organization's veterinary program is well run. The zoo has good finances. all of the above

What is the main purpose of colorful petals?

Which of the following is NOT a way that science influences society? Science advances technology that is useful to society. Science gives society answers to difficult ethical issues. Science provides answers to some of society's practical problems.

Name one reason scientists believe that all life envolved from a single common ancestor

11. what are threats to biodiversity? (at least three examples)

What are cells called that do not have a specific job yet