Krebs cycle is also known as citric acid cycle give Give scientific reason

The Krebs cycle begins when acetyl-CoA combines with a four-carbon molecule called OAA, which produces citric acid.

Explanation:

This explains why the Krebs cycle is also called the citric acid cycle. In fact, the Krebs cycle is only named "the Krebs cycle" after its discoverer, Hans Krebs. It is additionally regarded as the tricarboxylic acid cycle.

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).

the correct option is option d