The first scientist that said that planets travel in fixed paths or orbits is Kepler. A
The cell membrane. (It also could be cytoplasm because it supports the organelles. But I think it is the cell membrane because it says barrier, and the cell membrane is the cell's barrier between it and the outside of the cell.)
The cell membrane is the outer most layer of the animal cell. It is selectively permeable, so it lets good things in and keeps bad things out. It also helps larger things that the cell needs to get in such as glucose by the process of endocytosis.
Answer:
Option (B) and (C).
Explanation:
Anxiety disorders may be characterized as the mental health disorder that are characterized by the feelings of worry and panic. The symptoms of anxiety disorder are restlessness and stress.
Various biological factors are involved in the development of the anxiety disorder. The decreased levels of the GABA neurotransmitter is mainly responsible for this disorder. The enlarged fluid filled spaces called hydrocephalus are indirectly involved in the anxiety disorder.
Thus, the correct answer is option (B) and (C).
The simple definition would be:
<u><em>"An increase in the number of people that reside in a country, state, county, or city."</em></u>
Hope this helps!
The correct answer is B. The Kuiper Belt is home to a dwarf planet similar to Pluto
Explanation
The Kuiper Belt is the most remote area of the solar system, it is an elliptical region, which is more or less 149.5 million kilometers from the sun. Its name refers to the fact that it is a belt, so it could be associated with the appearance of the asteroid belt that is located between Mars and Jupiter. However, in the Kuiper Belt most objects are icy rather than rocky. In this region of the solar system you can find several dwarf planets such as Pluto, these planets are classified as such because their size is enough to be considered as or asteroids, but they cannot be considered planets either because they do not meet any requirement. According to the above, the correct answer is B. The Kuiper Belt is home to a dwarf planet similar to Pluto
