Which of these is a way that the sexual life cycle increases genetic variation in a species? 1. by allowing crossing over
2. by allowing an increase in cell number
3. by conserving chromosomal gene order
4. by decreasing mutation frequency

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Afisherman is dragging his boat from the shore out into the ocean. match the following lists of areas he will move over in the correct order. continental rise continental slope continental shelf [tex]1.[/tex] [tex]2.[/tex] [tex]3.[/tex]