Aforest fire burns down all of the trees in a large forest. the animals that lived in the trees are forced to move down to other areas. what kind of disturbance is this?

Correct D). Catastrophic

A catastrophe is a disaster, It is a Greek word it is originally referred to as the disastrous finish of a dram or a tragedy. it is a form of disturbances that destroy most of the trees, and it also destroys all the seedlings and sampling in case of fires and flooding.

Example of Catastrophic events includes tsunami, earthquake, and hurricane etc.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.