Do you mean ion pumps in the membrane of cell?
If so, then ion pumps maintain an electrochemical gradient across the membrane.
Eukaryotic cells are large complex cells with a nucleus
eukaryotic cells
Answer:
Direct contact.
Explanation:
Since it was spread through facial tissue, physical contact is needed.
Hope this helps! :)
Energy in ecosystems must be continuously supplied by the sun as the warmth from the sun allows plants to grow plus photosynthesis depends on the sun's energy also. Animals also depend on the sun for warmth to survive (or else hibernate). Also, the sun powers the water cycle, the carbon cycle and the nitrogen cycle
C. The temperature remains the same.
