What is photosynthesis​

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Which of the following represents the chemical reaction of hydrazine and hydrogen peroxide to produce nitrogen and water? a. nitrogen + hydrogen peroxide → hydrazine + water b. nitrogen + water → hydrazine + hydrogen peroxide c. hydrazine + hydrogen peroxide → nitrogen + water d. water + hydrogen peroxide → nitrogen + hydrazine