Select the correct answer from each drop-down menu.

An increase in carbon dioxide increases the temperature of Earth. This increase leads to in ecosystems. The increased temperature in cold regions was observed to cause the melting of snow. So, species living in these regions will face

In the first box is it (climatic changes, decreased pollution or increased space)

in the second blank box is it (additinol space to live in, a loss of habitat or no change in their living enviorment)

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.