Which describes a difference between cephalopods and gastropods? O Cephalopods have a water vascular system, and gastropods have an open circulatory system.
O Cephalopods live only in ocean environments, and gastropods live in a variety of environments.
O Cephalopods have a simple nervous system, and gastropods have a complex nervous system.
O Cephalopods are the largest group of mollusks, and gastropods are the smallest group of mollusks.

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.

Plz fast biotechnology is a growing field of applied biology. many crops such as corn have been engineered to be resistant to herbicides. therefore farmers can spray these chemicals to kill weeds growing near the crop without worries of killing the crop itself how does this type of biotechnology work? a. by changing the genetic make up of the crops. b. by causing the crops to kill the weeds. c. by changing the type of crops used. d. by changing the location of the crops.

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because