1. what is biodiversity? a) the number of mammals that live in an area b) all of the species that live on the earth c) all of the phyla that live on the earth d) the entire gene pool 2. what is it called when a habitat is reduced in quality? a) habitat destruction b) habitat degradation c) habitat pollution d) charismatic megafauna 3. what are large endangered animals that have popular appeal? a) habitat degraders b) extinction megafauna c) background endangered animals d) charismatic megafauna 4. why are these modern extinctions not much to worry about? a) only small, insignificant animals are going extinct. b) organisms have been going extinct since long before humans. c) they are cause for concern; they are many times greater than before. d) humans aren't in danger of going extinct. 5. what does the background extinction rate tell us? a) how many organisms would go extinct if humans were not here b)how many organisms that are "in the background" (as in, not charismatic megafauna) go extinct each year c) how many organisms go extinct including due to human activity. d) none of the above are true. 6. what types of organisms are endangered? a)all types except bacteria b) just plants and animals c) every type can become endangered. d) charismatic megafauna 7. which of the following are the most endangered habitats? a) tropical rainforests b) temperate deciduous forests c) coral reefs d) a & c are both highly endangered. 8. when you drive a car, you are contributing a) light pollution. b) air pollution. c) water pollution. d) land pollution. 9. a sewage spill would be a) land pollution. b) air pollution. c) noise pollution. d) thermal pollution. 10. which of the following is not a reason that light pollution could be harmful? a) disruption of sea turtle reproduction b) confusion of photosynthetic organisms c) disruption of bird songs d) disruption to migrating birds say the letter and the written form of the question. do not just say the letter.