Amembrane that lines the cavity with an opening to the extern all environment is called a membrane

Metamorphic rocks are formed when sedimentary or igneous rocks are subjected to heat or pressure and recrystallize without melting. which of the following rocks results from the metamorphism of limestone? a. granite b. slate c. sandstone d. marble

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b. organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.

What do your cells need to live? a. carbon dioxide b. carbon c. air d. oxygen