** NEED HELP 3O POINTS**
Which definition contains an assertion which MIGHT require verification using another source?
A) Aerosol
B) Biomass
C) DDT
D) Ecosystems

2) How is this passage's information organized?
A) alphabetical order
B) chronological order
C) order of importance
D) problem and solution

3) A colorless, odorless, insecticide that has harmful effects on most animals is
A) DDT.
B) acidification.
C) aerosol.
D) asbestos.

4) What is one of the environmentally damaging effects of "drift-net fishing"?
A) pollution of pristine water sources off the coast line
B) destruction of coral reefs and other valuable ecosystems
C) deepening of ocean channels making it hard for shellfish to survive
D) overharvesting and waste of large populations of non-commercial marine species

5) An ecological unit comprised of complex communities and their specific environments is a(n)
A) bio-indicator.
B) biodiversity.
C) biomass.
D) ecosystem.