Question 1 of 5
On page 12, #3: What factor might be contributing to global warming?
(1 point)
A. Helium released from burning petroleum fuels.
B. Hydrogen sulfide released from burning petroleum fuels,
C. Nitrous oxide released from burning petroleum fuels
D. Carbon dioxide released from burning petroleum fuels.
Question 2 of 5
ALLERI

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.