Which results in a chemical change? A. A teacher feels a rough cloth

B. A student colors a blue paper

C. A student smells a flower

D. A teacher lights a candle

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

How to convert a density of 0.791g/cm3 to lb/ft3

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum