Which of these statements is TRUE of complementary products?

Why aren't the stains like crystal violet and safranin washed away with water during simple staining?

Most scientific questions are based on opinions. hypotheses. observations. experimental data.

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.