Question

The mass extinction at the end of the Mesozoic Era was caused by ______.
a. solar radiation
c. an ice age
b. a meteor or asteroid colliding with Earth
d. volcanic activity

Answer 1

The answer to the question stated above is letter b.  a meteor or asteroid colliding with Earth
 The mass extinction at the end of the Mesozoic Era was caused by a meteor or asteroid colliding with Earth. This was said to happen about 65 million years ago.

Answer 2

Answer:

B. a meteor or asteroid colliding with Earth

Explanation:

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