Why is biodiversity important and how does it affect different ecosystems ?

Hi, welcome to the forum.

Biodiversity is important for many reasons:

1) Because certain organisms have economic value (such as rainforest plants being made into medicine), they have value to the ecosystem (think of their spot on a food web).

2) They are a source of natural beauty and recreation.

3) Many parts of the natural world prevent or slow rapid change. One example would be forests, which prevent erosion and also prevent heavy rains from turning into floods. To some extent the climate is naturally held somewhat constant as well. This does not require diversity as much as nature; a forest with low diversity will prevent erosion as well as one with high diversity.

Biodiversity is important because it affects the air we breathe, the food we eat, how clean our drinking water is, and is the source of products that come from the earth. Biodiversity helps control disease, provides us with things we need, and can make us happy just by providing us with natural beauty.