Answer:
B. The presence of an earthquake belt.
Explanation:
A rift valley only happens when the plates are diverging. A trench represents plates converging. And the presence of active volcanoes is only on converging and some diverging boundaries (hence there is no volcanoes in California). An earthquake is present in all plate boundaries.
<span>It can cause parts of a mountainside to break and fall away.
I hope it helps.</span>
Given:
62% of the residents visit Comet Mall.
73% of the residents visit Star Mall.
48% of the residents visit both malls.
To find:
The probability that a resident chosen at random shops at either Comet Mall or at Star Mall.
Solution:
Let A be the event that the residents visit Comet Mall and B be the event that residents visit Star Mall. Then, we have



We need to find the probability that a resident chosen at random shops at either Comet Mall or at Star Mall. It means, we have to find the value of
.
We know that,

On substituting the given values, we get


Therefore, the probability that a resident chosen at random shops at either Comet Mall or at Star Mall is 87%.
Answer:
irregular
Explanation:
Irregular galaxies have no regular or symmetrical structure. They are divided into two groups, Irr I and IrrII. Irr I type galaxies have HII regions, which are regions of elemental hydrogen gas, and many Population I stars, which are young hot stars.