About how much energy is transferred from a primary consumer to a sencondary consumer
a. 90% energy from sun
b. 10% energy from sun
c. 10% primary energy
d. 1% primary energy

Which of the following is an example of this type of co-evolution

How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water