Please answer (will give brainiest)

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

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

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.