One. possible explanation for the fact that some simple one cell organism did not evolve into complex multicellular organisms is that

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity

What happens during the fall in september