We should use wind and solar energy more because those are the two main renewable energy sources, the sun shines a lot so we can use the power from that to power are houses, but at night that would be a problem, so at night you could use water as a renewable energy to power your house at night so you can get light, wind would be good if you live in a windy place like Cheyenne WY.
Answer:
Phenotypic variation is the variation which appears in the phenotype or morphology of the organism. Natural selection is the mechanism of evolution in which the adapated organism to the environment is selected or highly favoured during the course of evolution.
A phenotype is the results of the genetic change which to be established in a population has to be passed on to the generation.
Since variation in phenotypic traits allows the organism to leave indifferent circumstances therefore phenotypic variation proves essential condition to natural selection.
Answer:
hot air expands and rises to the top of the atmosphere, while the cool air stays
The answer that seems like would best fit this graph would be "(4)Years"
