What is the most common stimulant drug used today? A. Heroin
B. Cocaine
C. Caffeine
D. Alcohol

Which of the following represents the chemical reaction of hydrazine and hydrogen peroxide to produce nitrogen and water? a. nitrogen + hydrogen peroxide → hydrazine + water b. nitrogen + water → hydrazine + hydrogen peroxide c. hydrazine + hydrogen peroxide → nitrogen + water d. water + hydrogen peroxide → nitrogen + hydrazine

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

Number and variety of living organism; includes genetic, species, and ecological types