The evolutionary theory is that the animals and plants we have today evolved from something else to be able to adapt to their surroundings and be able to live on
hope this helps
The primary source of energy for almost every ecosystem on Earth is the sun
"A gene pool consists of all genes, including all the different alleles that are present in a population. Number of times an allele occurs in a gene pool compared with the number of times other alleles occur. In genetic terms, evolution is any change in the relative frequency of alleles in a population."
6-8 is the answer to your question
If the shape of this unknown skull is long and skinny at the cheekbones, then it is most likely an Australopithecus afarensis one
