Which of the following statements regarding mutations is true? Mutations - A -occur randomly and increase genetic variability.
B- are usually harmful and cause the organisms to die.
C- are caused by changes in an organism's environment.
D- occur at the consistent rate in nearly every population.

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Twind is considered to be an abiotic factor because it.?

Cpr, or cardiopulmonary resuscitation, is a first-aid technique to save lives. it involves compressions of the patient's chest cavity. which description is the best description of the functions of chest compressions in cpr? chest compressions are done to pump the heart. chest compressions are done to strengthen the rib bones. chest compressions increase carbon dioxide inhalation. chest compressions allow the patient's muscles to wake up.