Which of the following is/are a nonrenewable source of energy that can be used to produce electrical energy? A. nuclear reactions B. wind C. solar energy D. all of these

Skulls of (1) modern gorilla, (2) australopithecus afarensis, (3) homo erectus, (4) homo neanderthalensis, (5) homo sapiens based on the diagram, which of the following best describes ways in which the physical appearance of h. neandertalensis and h. sapiens differ? (2 points)

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has