Flatworms have a concentration of nerve tissue and organs in one end of the body. what is the name of this characteristic,

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm

Producing disposable grocery bags consumes resources. recycling disposable bags is a solution that can recover some of the resources used to make new bags. which of the following behaviors could further refine the solution? a. disposing of bags by burning them b. reusing bags whenever possible c. using bags at once so that they do not break d. using only nonrenewable materials to make new bags subject is environmental science for apex users