Concentration gradient= the difference in the concentration of a substance between two areas.
Answer:
Bacteria.
Explanation:
When a plant or animal dies, decomposers like fungi and bacteria turn the nitrogen back into ammonium so it can reenter the nitrogen cycle. Denitrification - Extra nitrogen in the soil gets put back out into the air.
Answer:
B.
Explanation:
most valleys are weathered by running water. Glacier can also weather these. Because of running water it will carry the weathered pieces away.
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Answer:
it effects the ozone which keeps out a majorty of the the suns raditon
Mutualism since the clown fish and the anemone both benefit from each other.
