Really need some help An experiment with high validity is .

A. probably filled with mistakes

B. a strong candidate to win the Nobel prize

C. not something that can be replicated easily

D. likely to support the same conclusion as other experiments

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)

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system