The permian period spanned the time between 286 million and what years ago
a. 150 million
b. 245 million
c. 1.3 million
d. 760,000

Option (B)

Explanation:

The Permian period started from 286 million years to 245 million years back.

It was the last period that belongs to the Palaeozoic era. During the initial stage of this period, the continents were all combined together, forming the supercontinent called the Pangea. The Pangea at this time experienced a very extreme type of climates because of its huge landmass and towards the south, the area was under the frozen ice. This period was the boundary that separates the Paleozoic and the Mesozoic era.

Towards the end of the Permian, there occurred a global mass extinction. As a result of which, about 90% of the earth's marine species and approximately 75% of the terrestrial lives were completely wiped off from the planet.

Thus, the correct answer is option (B).

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation: