Emergency pleas answer someone!! -which is a disadvantage of synthetic fertilizers?
A. They are not as effective as organic.
B. They must be applied repeatedly to work.
C. they can burn or damage plants.
D. they are more difficult to obtain

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

What causes an unsaturated fatty acid to have a different shape than a saturated fatty acid? o a. unsaturated fatty acids have more hydrogen atoms. o b. unsaturated fatty acids have double carbon bonds. o c. unsaturated fatty acids have more nitrogen atoms. o d. unsaturated fatty acids have single carbon bonds.

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone