28. Which of the following threaten the wet lands of Northern Europe?
Select the 3 that apply then give an example for each:
land development
nuclear power plants
drainage for peat production
am construction
bottom trawling
increased ship traffic

Ozone in the upper atmosphere has been depleted by a. sulfur dioxide. b. chlorofluorocarbons. c. carbon dioxide. d. oxygen.

The diagram shows , , and . which statement can be proven true from the diagram? a. ∠dgb is supplementary to ∠ega. b. ∠dgb is supplementary to ∠cgb. c. ∠cgb is supplementary to ∠agd. d. ∠ega is supplementary to ∠egc. e. ∠egd is supplementary to ∠cgb.

How many structures do prokaryotic cells have in common with the eukaryotic cells? a. 2b. 3c. 4d. 5