Answer: c
Explanation: Plants and animals need nitrogen to make proteins but they cannot take it in from the air. Because nitrogen is unreactive as a gas, it has to be transformed into a new molecule. When bacteria in the soil takes nitrogen from the air, it becomes nitrates. Finally, it can move through the food chain in this form.
The enzyme catalyzes (speeds up) the rate at which the substrate is broken down.
I feel like it's D, Because adaption have something to do we behavior and structure...Hope that helps
That would be known as hypocalcemia.
the muscles would begin to cramp until the calcium is restored.