Which of the Following Represents a Potential Threat to Biodiversity

Multiple Choice

Which of the following represents a potential threat to biodiversity?

A) People construct artificial reefs to support marine life.
B) Humans clear land for agriculture and housing.
C) Energy flows through an ecosystem,with much lost as heat.
D) Tropical rain forests and coral reefs are found where solar energy is the most abundant.
E) In a food chain,one population feeds on another.