Adisease common among hat makers in the seventeenth century was caused by their direct contact with arsenic mercury lead sulfur

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

The energy available as a result of the motion of a body is called energy. -potential -gravitational -kinetic -chemical

As a small change in a person's dna can cause a genetic disorder