An atom with how many electrons in its outer shell is most stable? a) 1 b)4 c) 8 or d) 10

What came first egg or chicken? and is tomato a vegetable or a fruit?

Has anyone taken the genetics unit test in connexus? not looking for answers, just a little bit what to expect and some with studying.

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