What are the processes responsible for formation of the Martian regolith? Mechanical weathering, chemical weathering or both?

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed

Methane gas created by a cows flatulence especially in a large herd is a greenhouse gas. true or false.

The two main stages of cell division are called