Answer:
a. A convergent boundary is where plates come together and a divergent boundary is where they move apart from each other.
Explanation:
The surface of the earth is made up of a series of different-sized tectonic plates. Over time, these plates move relative to one another, causing earthquakes and volcanic activities.
A convergent boundary is created when two plates come together. The force of this collision can push the edges of the plates into ocean or mountain floors, resulting in a series of volcano.
A divergent boundary on the other hand, is created when a plate moves apart from another. Usually, an earthquake will occur at this boundary and magma will erupt to the surface of the earth crust.
Low-mass stars end their lives here by ejecting their outer layers due to their thermal momentum during the planetary nebula stage, while high-mass stars have enough mass to survive this stage.
Stars form from collapsing cores of molecular clouds, and the core distribution is already skewed in that there are more low-mass nuclei than high-mass nuclei (this is actually observed in molecular clouds). So, of course, there are more low-mass stars than high-mass stars.
Both low-mass and high-mass stars begin to fuse hydrogen into helium, but high-mass stars burn hydrogen faster because the pressure and temperature at their core increases. The second difference is that you can create heavier elements.
The main difference between massive and low-mass stars at this point is the helium flash. Massive stars do not have helium fusion flashes. The exact stages of evolution are: Subgiant Branch (SGB) - combustion of hydrogen shell - expansion of the outer layer.
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Answer:
<u>ESSAY ABOUT:</u>
<u>MAIN NEWS: NEW YORK EPIC CENTER OF THE CORONAVIRUS EPIDEMIC.</u>
Explanation:
It will be highlighted in the following essay how two two sources of national and international information highlight this news. Faced with the coronavirus epidemic, many questions arise, such as; As it is possible that the United States in so little time stands out for exceeding the number of infected countries like Italy and China, before this we will see below what could have happened.
According to the <em>El Pais editorial (Madrid editorial)</em>, this happened because they did not have a national strategy, and New York does not have a good hospital system, the same respirator is being used for two patients.
According to the<em> Las Americas editorial</em>, the USA surpasses Italy first and then China, and the federal government sent 400 respirators to New York, when 30,000 are needed. So far, 40,000 retirees and medical students have volunteered to strengthen medical teams. The epidemic is expected to peak in two to three weeks.
<span>The question says,'seaf floor ............ involves plates under the ocean moving farther apart and colliding with continental plates that are then pushed away or toward each other. The answer is sea floor spreading. It usually occur at middle ocean ridge where new oceanic crusts are formed as a result of volcanic activity. After this formation, the newly formed oceanic crust gradually move away from the ridge.</span><span />
E sounds the most reasonable answer
