Which element is found in nucleic acids but not in amino acids? O carbon
O hydrogen
O nitrogen
O phosphorus

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?