Answer:Fixation - Fixation is the first step in the process of making nitrogen usable by plants. Here bacteria change nitrogen into ammonium. Nitrification - This is the process by which ammonium gets changed into nitrates by bacteria. Nitrates are what the plants can then absorb
Explanation:
Answer: show what's happening to are earth
Explanation:
The seasons are caused as the earth tilted on it's axis, travels in a loop around the sun each year.Summer happens in the hemisphere tilted towards the sun, and winter happen's in the hemisphere tilted away from the sun.
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