Which of the following is true about natural selection?
a. natural selection usually causes a species to change suddenly.
b. natural selection does not cause a species to change.
c. natural selection is the only cause of changes in a species.
d. natural selection usually causes a species to change gradually.
i beg me 18 points if you

What field of science did harry hess study?

Monitor and apply fix up strategies

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.