Both commensalism and parasitism are relationships that benefit at least one species. which of the following describes the effect on the other species in the relationship? commensalism has a positive effect on the other species, while parasitism has no effect. commensalism has no effect on the other species, while parasitism has a positive effect. commensalism has a negative effect on the other species, while parasitism has no effect. commensalism has no effect on the other species, while parasitism has a negative effect.

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

Most crimes involve some evidence relating to the human body; for that reason, what related science is frequently used in forensic investigations? a)psychiatry b)physics c)botany d)biology

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above