What are the four main human activities that cause a loss of biodiversity?
a. preservation, habitat destruction, overharvesting, and use of chemical pollutants
b. habitat destruction, invasive species displacement, use of chemical pollutants, and overharvesting
c. overharvesting, conservation, use of chemical pollutants, and invasive species displacement
d. conservation, preservation, use of chemical pollutants, and overharvesting
e. habitat destruction, overharvesting, conservation, and use of chemical pollutants