Nature has ways of keeping the nitrogen carbon and phosphorus cycles in balance however run off from animal operations and fertilizer in our waterways can result in . a. cultural eutrophication
b. erosion
c. cleaner drinking water
d. an increase in water temperatures

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

What part of the brain is highlighted in the diagram below?

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content