Muscles in the legs a person run. which type of muscle are these?

a. smooth muscles

b. skeletal muscles

c. cardiac muscles

What is earths lithospheric plates interact at

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating