Fades into outer space
No clear upper boundary
Not all scientists agree that it is part of atmosphere
The phrases above are describing <u>B) exosphere layer of our atmosphere</u>
Explanation:
- The exosphere is the uppermost region of Earth's atmosphere as it gradually fades into the vacuum of space.
- Air in the exosphere is extremely thin - in many ways it is almost the same as the airless void of outer space.
- The exosphere is perfect for placing satellites as there is very little friction and they are able to orbit fairly easily without being disrupted. Most of the molecules that exist in the exosphere end up being pulled back into earth's lower atmospheric levels by gravity.
- The air in the exosphere is very thin, and is made up mostly of helium, and hydrogen.
- Traces of other gases such as atomic oxygen and carbon dioxide can also be found. The upper level of the exosphere is the farthest point from earth that is still affected by earth's gravity.
- The exosphere is an important atmospheric layer as it functions as a transition zone between the earth's atmosphere and outer space
- It is the layer in which we can find artificial satellites that carry out constant studies of the earth and outer space. It also acts as a transit zone towards outer space.
Answer:
C) it is necessary for the survival of the individual.
Explanation:
Sexual reproduction is rarely, if ever, necessary for the individual. This is not a reason for its importance. However, while not important for the individual, sexual reproduction is important for the species. It allows genetic variability among offspring, as well as mutations. This ensures that not all members of a species are the same, and in this way, they have a better chance of surviving. Moreover, it allows for offspring to be produced at a faster rate.
<span>That would be "Chorionic Villus Sampling"</span>
When was BSE first discovered?
BSE first appeared in British cattle in the mid-1980s. There have been numerous cases detected in other countries. A complete list of countries is available from both the U.S. Food and Drug Administration (FDA) and the U.S. Department of Agriculture (USDA).
