1. What is the correct term used when there is declining number and variety of the species in an area?
A. developed nation
B. loss of biodiversity
C. supply and demand
D.Sustainability

2. What are the two human actions that adversely affect life and biodiversity?
A. deforestation and pollution
B. farming and working in the factories.
C. raising animals on farms and eating them.
D. weather and natural disasters.

3. What is a mass?
A. benefit to the enviroment
B. disapearance of many species.
C. rapid increase in biodiversity.
D. result of an exotic species.​