Feathers, wings and hollow bones of birds are examples of

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

Which of these resources is used worldwide to make construction products, pottery, and porcelain

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