Ricardo scooped up some pond water that contained many green organisms. his teacher suggested that he key out the organisms. what important feature(s) should ricardo use to determine if the organisms are plants? a)organisms do not live under water. b)organisms are unicelluar. c)organisms are multicelluar and undergo photosynthesis d)organisms contain oganelles that include a cell membrane

Aristotle classified animals according to their a. habitat and mating behavior c. mating behavior and relatedness b. habitat and physical differences d. physical differences and mating behavior

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .

The process of meiosis produces only gametes, eggs or sperm. according to the diagram, how many sperm are formed from each cell that undergoes meiosis?