Elements in the ecosystems are mutually dependent on each other
Explanation:
The ecosystems are very complex. Basically, they represent a community of living organisms in conjunction with the non-living components of the environment, and all together acting a single system. All the living organisms have influence on each other, but also on the non-living components of the environment, and vice versa. This results in the system being a ''well oiled machine'', but also making it very fragile, as if one component is eliminated, everything will suffer.
- The ecosystems are defined by multiple factors, including the latitude, climate, topography, and the living organisms themselves.
- Everything is dependent on many other components in an ecosystem, so drastic changes often have devastating effects, resulting in extinctions.
- The changes in the ecosystems occur because of the natural cycles, impact with space objects, or more recently because of the human activity.
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Answer:
Hot spots
Explanation:
Hot spots are places on a plate boundary or within a plate where magma is rising up to the surface to form volcanoes.
Answer: is constant
Explanation:
In order to analyze the velocity of the stars within a galaxy, the <u>galaxy rotation curves</u> (developed by the American astronomer Vera Rubin) are used. These graphs are elaborated as a scatter diagram in which the orbital velocity of the stars present in a galaxy is represented on the Y axis and the distance of these stars to the center of the galaxy on the X axis.
Thanks to this diagram, it has been possible to observe a characteristic behavior in the rotation speed of the stars (and gas) present in the galaxies, which differs from the rules of the orbital movement of the planetary systems postulated by Newton and Kepler.
This means that in these galaxy rotation curves it has been observed that the rotation speed of stars and gas is "constant", regardless of the distance to the center of the galaxy. This discrepancy and these results were then used to demonstrate the existence of dark matter in the universe.
B- Tectonic is the answer. A divergent boundary is when two plates move away from each other, a transform boundary is when plates slide against each other and a convergent boundary is when two plates collide.