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 No 1:
A concentration gradient can be described as a phenomenon by which molecules travels from an area which is highly concentrated to an area which has low concentrations of that molecule.
Answer No 2:
A molecule is said to be diffusing down a concentration gradient when molecule acquire the phenomenon of concentration gradient i.e move from higher concentration to lower concentration. This mechanism is also termed as passive transport. Active transport is the opposite of passive transport. In active transport, molecules move against the concentration gradient i.e from an area of lower concentration to an area of higher concentration.
well there will be no one hunting the seals so the seals will over populate also some fish will to
I think that the best phrase to fit into the blank is a "scientific theory".
A scientific theory is developed through experiments which use the scientific method, and a theory can be improved if additional data is available or if people provide suggestions which make the theory fit the data better.
