Question

why is the worlds loss of biodiversity a source of concern?
a. humans depend upon other organisms for food and oxygen
b. species extinctions have been rare throughout history
c. loss of biodiversity is not a concern because extinctions are common
d. both (a) and (b)

Explanation:

Humans rely on other organisms for food (e.g., plants and animals for sustenance) and oxygen (produced by plants through photosynthesis). Biodiversity loss is concerning as it can disrupt these essential ecological services. Option B is incorrect as species extinctions are not rare, especially in modern times due to human - induced factors. Option C is incorrect as loss of biodiversity is a major concern.

Answer:

A. Humans depend upon other organisms for food and oxygen