Answer;
The amnion
Explanation;
-The amnion is a tough, thin membrane that surrounds a developing fetus in mammals, reptiles, and birds. It is the first of the three cavities (amnion, chorion and yolk sac) in the embryo and is formed on 8 dpc.
-In the human body, the amnion is the first of three cavities, including the chorion and yolk sac, that work together to keep the developing fetus nourished and protected.
-The amnion provides a protective environment in which the fetus' temperature is regulated and protects the fetus from friction caused by the mother's movements.
It flickers or appears to flicker because of the long distance it hast to travel
The quiver tree faces various problems due to climate change and drought periods.
The population of this plant tries to avoid the unfavorable environmental conditions by shifting their growing range towards the poles, or more precisely away from the heat of the equator.
It helps homeostasis, by maintaining the shape of a cell depending on how much solute is outside of the cell and how much water is inside the cell, in an isotonic solution the size of the cell stays the same because the amount of water inside the cell is the exact same percentage of solute outside of the cell.
