Answer:
The Galactic Center (or Galactic Centre) is the rotational center of the Milky Way galaxy; it is a supermassive black hole of 4.100 ± 0.034 million solar masses, which powers the compact radio source Sagittarius A*.
Answer:
respiration and decomposition
Explanation:
Respiration is when animals breathe in oxygen and use it to produce energy, releasing carbon dioxide and water as by-products. In simpler terms, it is the act of breathing.
Answer:
At the beginning of the follicular phase, the lining of the uterus (endometrium) is thick with fluids and nutrients designed to nourish an embryo. If no egg has been fertilized, estrogen and progesterone levels are low. As a result, the top layers of the endometrium are shed, and menstrual bleeding occurs.
Answer:
Species become endangered for two main reasons: loss of habitat and loss of genetic variation. A loss of habitat can happen naturally. ... Human activity can also contribute to a loss of habitat. Development for housing, industry, and agriculture reduces the habitat of native organisms
Explanation:
