Imagine you do a an experiment to find out how soil moisture affects seedling growth and you plant seeds in soils with 3 different moisture values. What is your independent variable?

*number of seeds

*soil moisture

*number of soil types

Which feature of vertebral column is homologous to the anterior and posterior sacral foramina?

What are some things that the human brain is specialized to do? what is the evidence for sexual selection? what is sexual dimorphism and when is it found?

What is the current greatest threat to agricultural sustainability? a. erosion b. water pollution c. air quality d. all of the above

What is causeing the loss of wetlands?

Each of these four organisms began life as a single 2N cell. Cells in each organisms divided and differentiated. Probably the single most important process that ensured genetic continuity in all four organisms was DNA A) alliteration. B) replication.

List three ways that sociologists study demography

Explain why the immune systems of most people do not injure their own cells

What is a plate? a the ocean floor b a continent c crust and upper mantle d large piece of the earth's crust

Chemical reactions in cells are faster than the same reactions outside cells. True or false?

Which tree harvesting method promotes the growth of younger trees by selectively cutting mature trees over a period of 10 years?