After finishing a marathon, Adena grabs a water bottle and quickly drinks all of its contents in an attempt to satisfy a ____ drive.?

Cross-sectional research is research that measures the behavior of one or more study participants at more than one point in time

Indicate whether the statement is true or false.

During the period of the zygote, the __________ becomes the new organism, and the __________ becomes the structures that provide protective covering and nourishment

A) embryonic disk; trophoblast B) trophoblast; amnion C) yolk sac; chorion D) embryonic disc; villi