Humans affect the carbon cycle by A. burning fossil fuels.
B. destroying vegetation that absorbs carbon dioxide.
C. clearing forests.
D. All of the above

In 1933 the 21st amendment was added to the u. s. constitution, allowing for the manfacture, transportation, and sale of alacoholic beverages in the united states. why was this amendment needed?

Where does oxidative phosphorylation take place

Dubai is challenged by all of the following environmental factors except a. a warm and dry climate b. a lack of annual rainfall c. scarce freshwater resources d. a lack of valuable natural resources