Which correctly compares a jellyfish and a coral?
A. They are both polyps and only reproduce asexually.
B. Only the jellyfish is a medusa, and it reproduces in two stages.
C. They are both medusae, and they reproduce sexually and asexually.
D. Only the jellyfish is a polyp, and it reproduces in a single stage. Answer ASAP please!!

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

What did hunter gathers do to alter the environment?