Why are bacteria a necessary part of the nitrogen cycle? . . a. living things cannot use atmospheric nitrogen.. . b. living things cannot use the nitrogen in plants.. . c. bacteria are the main nitrogen reservoir.. . d. bacteria are the main nitrogen transpirators..

The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation