Longitudinal studies make comparisons over time, whereas cross-sectional studies make comparisons at a single point in time. hope that helps some
Answer: you would then put more sand on top and wait then a little more water!
Explanation:
Because you have to sublimated the leaves
This is called cephalization. In mammals, this cephalization occurs primarily in the head...brain, eyes, ears, mouth.
<span>The composite mesoglea of jellyfish and sea anemones provides structural support using collagen fibers in a complex gel matrix.</span>
