During which period did the first land vertebrates appear?

A. Devonian

B. Mississippian

C. Pennsylvanian

D. Permian

Which characteristics of living things does a car have? How can the characteristics of living things be used to show that a car is not a living thing?

What is a nonexample of a prokaryotic cell

What is the difference between prepared slides and wet-mount slides in a microscope?

Evaluate Anna's list and her conclusion. Do you agree or disagree, why or why not? A) Anna is incorrect. ALL cellular processes require ATP energy, including glycolysis, osmosis, and diffusion.

What is a complementary strand of DNA

Which example best describes one way that humans contribute to the water cycle? A. formation of genetic material B. evaporation of sweat from skin C. production of oxygen D. fixation of nitrogen into ammonia

How would signaling be affected if a mutation caused a g protein to replace gdp with gtp on its own without needing to be activated by the g protein-coupled receptor?

The role of an organism in the ecosystem is called its A. niche B. habitat C. species D. environment

Which condition will increase the rate of chemical reaction?

Why does DNA has an overall negative charge?