In which situation is a chemical reaction occurring? A. ice melts B. a nail rusts C. a glass breaks

Butter melts when you heat it in a pan on the stove. is this a chemical change or physical change? how can you tell?

1. Which species is most vulnerable to extinction? Give at least 3 reasons why and explain.

Which medical term describes the common cold?

What are those circuit ribbon things called?

What does the prefix tri - in phosphate mean?

What is cation exchange

Which factors are most likely to limit the growth of the coral reef in the Caribbean

Why can the sphenoid bone be called the keystone of the cranial floor?

The oldest members of the human lineage are the Australopithecines. a. True b. False

What are the soil layers in order of increasing porosity? A. topsoil - subsoil - C horizon B. C horizon - subsoil - topsoil C. Subsoil - topsoil - C horizon D. Topsoil - C horizon - subsoil