Which of the following statements defines ovulation? Ovulation is when an immature ovum develops into a mature ovum.
*Ovulation is the release of a mature ovum, which occurs once each month.
Ovulation is the production of an ovum that occurs each month.
Ovulation is the monthly discharge of the uterine lining.

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

As the earth formed, the force of gravity increased due to increased mass. what effect did this increased gravity have on the forming planet?

Which fossil organism in whale evolution do you think was the first to live mostly in water? explain your claim with evidence and reasoning?