Which of the following represents a chemical change? select one: a. rocks being smoothed by rapid water movement b. the pink color of a rose c. iron's attraction to a magnet d. decomposition of stone due to acid rain

The use of dna as evidence in criminal investigations became possible because of the

Which of the following lines of evidence would best support your assertion that a particular plant is an angiosperm? a) it produces seeds. b) it retains its fertilized egg within its archaegonium. c) it lacks gametangia. d) it undergoes alternation of generations.

How does this experiment explain why it is often milder in areas such as coastal maryland while areas such as kansas or iowa have more extremes in temperature