Which factors affect natural selection? 1. inheritance, isolation, adaptation
2. variation, overpopulation, adaptation
3. isolation, overpopulation, speciation
4. variation, inheritance, speciation

Food provides molecules that serve as fuel and building material for all organisms. plants undergo photosynthesis and make their own food. other organisms, like us and the horse seen above, are consumers and eat food. how do all organisms use food as fuel? be sure to include the name of the process in your answer. me.

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

Fredrick griffith made a scientific discovery in 1928