wood- renewable resource that can be burned
oil- spills can destroy aquatic ecosystems
hydroelectric power- uses the kinetic energy of water
nuclear power- creates radioactive waste
coal- burning releases CO2 into the air
Answer:
sorr i practicing spanish
Explanation:
Todas las partes del cuerpo (músculos, cerebro, corazón e hígado) necesitan energía para funcionar.
I'm not sure if I will answer the question you asked, as I many have interpreted it incorrectly. In natural selection, there must be variance in the gene pool, the total frequency of alleles in a population. Now, one of the organisms may have a gene that somehow helps them survive from the selective force much better compared to the others. If this does happen, over time the gene pool will narrow down to become just the genes of that organism that survived better in the first place because the rest would be taken care of by the selective force. So, the alleles and trait come from the first organisms that had the advantage over the others of its species.
Because it is meant to be like that for animals , us humans dont need all the stuff that animals do.
