The number of different species in an area is a measure of biodiversity
true or false?

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms

Are the layers of rock above and below the coal older or younger?

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