According to the diagram below, which of the following is a derived characteristic of flatworms? A. Flatworms do not have a coelom.
B. Flatworms are multicellular.
C. Flatworms have a pseudocoelom.
D. Flatworms show protostome development.

List two limitations of natural selection

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%

Which one is an advantage of external fertilization a. the offspring are genetically identical to the parents b. more eggs can be fertilzed at one time c. more sperm can be released at one time d. more protection is available for developing plz