Answer:
Negative feedback
Explanation:
Negative feedback loops are the most common feedback loops in biological systems. The system acts to reverse the direction of change. Since this tends to keep things constant, it allows the maintenance of homeostatic balance.
Answer:
D
Explanation:
DNA use thymine and rna uses uracil but they use a,c,g together
C. employment and unemployment
because it is the only one that makes sense
B is the correct answer because all the classes are hierarchy’s in a sense