Which describes an example of genetic engineering

The answer would be 2: Vitamin A is added to rice to combat blindness.

Explanation: With how genetic engineering works, any implentation from an external source into the genetic code of a substance or being, in this case rice and vitamin A, it is a deliberate alteration of the rice's make up to have something which it originally did not possess, thus the answer is 2.

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).