An open-minded scientist does all of the following except:
a. think creatively to design experiments.
b. ask questions about observations.
c. question existing ideas.
d. hold on to his or her beliefs even if there is no evidence for those beliefs. (*)

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?