Which statement is true of biodiversity hotspots:
a they were stand high temperatures year-round
b they withstand high numbers of volcanic eruptions
c they are rich and threaten reservoirs of life
d they cover more than 70% of earths surface

Biodiversity hotspot are the area in which a lot of diverse variety of animals live. Biodiversity hotspot is rich and threaten reservoirs of life. Hence, the answer is option A.

Explanation:

Biodiversity hotspot is an area in which there are all the favorable conditions for the organism and plants to survive. Those areas has rich diverse group of plants organisms animals aquatic animals birds etc.

Amazon rain forest is said to be the largest biodiversity hotspot area present in the world. It has more than 70% of plants and animals variety in it.