What two things must happen for diffusion to occur?

What are the three main stages of the water cycle?

Which of the following energy pyramids shows the correct placement of trophic levels

Organize the following taxa from most specific to least specific: family, genus, order, species.

Explain how seasonal changes in carrying capacity can account for the annual cycles in population size observed for this population of rabbits in Ohio

Which is not an impact to the ecosystem after a drought? A. Floods will wipe out all the vegetation B. herbivores will have to leave and find food elsewhere C. water is scarce and causes organisms to find new sources of water elsewhere

Men do not have all ___ in their testes at birth.

All of the following compounds are fibers except a, pectin b, hemicellulose, c, cellulose. d. lignin e, glycogen

For mendels studies why was it important that his subject pea plants could reproduce quickly and produce many offspring

What is the molecule responsible for you inheriting traits from your family?

Which are processes that add to the genetic differences in siblings? Check all that apply. interphase independent assortment cytokinesis crossing over mitosis