It should be natural selection since there is no external influence implied. (like environment or genetic mutations.)
Ovulation is the process in which eggs are released from the ovary.
The correct option is B. The newest crust on earth is located at the actual site of the floor spreading and as new crusts are formed they replace it. Thus, the older the crust the farther it is from the mid ocean ridge.
Sea floor spreading is a geological process in which tectonic plates splits apart from one another. It occurs at divergent plate boundaries.
Answer:
Producers
Explanation:
they get their energy directly from sunlight and inorganic nutrients.