What is the definition of energy?

a) melting, freezing, evaporating

b) the ability to create a new substance

c) the ability to work

d) anything that bring about change

What happens when previous adaptations are no longer suitable for changes in the environment? A. Artificial selection B. Evolution C. Adaptations D. Extinction

A family has two male children. one brother has a straight thumb, while the other brother has a bent thumb. What causes this difference?

What is self correction in science

Describe at least 2 ways in which nature can impact an ecosystem over a long period of time.

Richard is a researcher in a pharmaceutical company. His company develops a new drug to treat chronic joint pain in humans. He wants to check the effect of this drug on a group of elderly people.

What is unique about the design of PCR tubes?

What develops when cells undergo metastasis

One way to avoid an overgrouth of toxin-producing algae would be to reduce or eliminate 1) swimming in the lake 2) fishing in the lake 3) the use of boats on the lake 4) the use of nitrogen fertilizers near the lake

The male reproductive cells are produced in the testes, which are contained in the

Holly is a healthy woman who is 22 years of age. using this information, calculate her target heart rate zone for moderate-intensity physical activity.