Experiments with fences that exclude deer and other plant herbivores from grazing showed greater plant biomass in fenced areas than in unfenced control areas. This is an example of

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

Which of the following happened during the precambrian era? the first prokaryotic cells the first eukaryotic cells development of photosynthesis all of the above

What kinds of molecules can pass through the cell membrane without any problem?