What are the three domains used to classify organisms?

What characteristics do all living things have

An amphoteric salt is one that contains an anion that can act as either an acid or a base in water. baking soda, nahco3, is an example.

Which of the following answers describes the correct sequence of events in the cell cycle, starting with cell division? A) S, G2, G1, M B) G1, S, M, G2 C) S, G1, G2, M B) G1, S, G2, M

Osmosis involves which of the following processes? A. movement of water up a concentration gradient B. movement of solute up a concentration gradient C. movement of water across a cell membrane D. movement of solute across the cell membrane

How does El Nino impact climate in the US? A. Precipitation increases in the north and decreases in the south. B. Winds in the south move east causing increased tornadoes. C. Winds in the north move west, causing increased tornadoes. D.

About how many cells are there in an adult human body?

Should animals be bred for dissection? State and support your opinion.

Which statement does NOT correctly describe our sun? A. Our sun is an average sized star B. Our sun is a very old star C. Our sun has an average brightness D. Our sun is yellow-white

One scientist discovered a new theory on the evolution of stars. Why is it necessary for scientists all over the world to agree with the theory before it can be accepted?

Which u. s. states are most likely to oppose strict permit requirements under the Clean Air Act