<span>One of the factors that threatens biodiversity is deforestation. Deforestation threatens biodiversity because it is destroying the habitats of many animals and without their habitats, the animals die. One way biodiversity can be preserved is to limit deforestation. On a small scale, an individual can help to do this by reusing their paper bags so that is a less demand for paper and as a result, trees to be cut down.</span>
Clues such as fossils such as bones, footprints, tar, etc, preserved underground helped inform scientists. You can also count how old a tree is when you cut it open and there are some alive for thousands of years so that is a possible way.
