What is the term for a structure that has no use in an organism?

A. Index

B. Sedimentary

C. Homologous

D. Vestigial

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Do you think the gene eef1 alpha1 supports cell theory? explain your response.