Answer: As a fertilized human egg divides, it first becomes a solid ball of cells, the morula. ... The cells of the outer layer of the blastocyst eventually form part of the placenta. Inside the ball is a small clump of cells, the inner cell mass, that will form all the tissues in the body.
Explanation:
The result of this treatment will decrease the osmotic pressure of the blood, causing the cell is losing water molecule by osmosis.
Administering pure water as resuscitation fluid might also lower the concentration of electrolyte in the blood, causing electrolyte imbalance. It is recommended to use normal saline(0.9% NaCl) solution for resuscitation as the solution is having the same osmotic pressure, thus won't inducing osmosis.
Answer:
An earthquake that isolates a population of rodents on a mountain from other populations of rodents
Explanation:
The stratosphere is where the ozone layer is located.
Answer:
Observing a Lunar Eclipse
A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the Sun, Earth, and Moon are aligned exactly with the Earth in the middle. Hence, a lunar eclipse can only occur the full moon phase.
Explanation:
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