Which item is an example of a trace fossil?

A. skull

B. footprint

C. cast

D. carbon imprint

Why did Gregor Mendel choose to use purebred plants in his experiments?/ A They reproduce sexually. B They exhibit only one form of a trait. C They have a variety of traits. D They reproduce asexually.

Under what circumstances does membrane transport always require energy?

Which statement best explains why tropical climates are so hot?

Exploring how we humans are diverse because of our differing genes and environments is the focus of

What is important to a scientist

What is unique about dogs?

3. The best thing you can do to keep a positive relationship with your supervisor is to

What contains both communities and ecosystems?

Which of the following represents a way that animals in a zoo are influenced by their environment? a. increased natural instincts b. decreased aggression c. unnatural behavior d. increased appetite

when the process of mitosis is correctly completed, the daughter cells should contain exact copies of all of on organisms genes. which biomolecule contains all of the organisms genes