Question

As a result of human activities, the natural environment is being contaminated with harmful substances. This contamination is also known as
Select one:
a. carbon cycle
b. fossil fuels
c. pollution
d. methane

Answer 1

B

Answer 2

Which of these is a reason that most introduced species are problematic?
Select one:
a. they are stronger and faster than native species
b. they do not have a place in the food chain and usually starve
c. they have no predators and have an easier time getting resources than native species
d. they have better adaptations to life than the native species