Which of the stars is the oldest ? red giant ,main sequence, white dwarf? or are they all the same age

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

Complete the statements to identify the first two steps of meiosis i. (1 ) the first and longest step of meiosis i is called i. (2)the second step of meiosis i is called i.

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic