Climate regulation, nutrient cycling, and other ecosystem services are economically valuable and essential for life on Earth.
Answer:
The 4 Nitrogenous Bases: Adenine, Thymine, Cytosine, and Guanine
Answer:B
Explanation:Estrogen causes the lining to grow and thicken to prepare the uterus for pregnancy. In the middle of the cycle, an egg is released from one of the ovaries (ovulation). Following ovulation, levels of another hormone called progesterone begin to increase.