Which of the following is an indicator of good water quality?
a. high levels of nitrates
b. high levels of phosphates
c. zero turbidity
d. all of the above

What is the similarities and differences between bacteria and eukaryote?

Long term exposure to waves can cause sunburns and skin cancer.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.