Which of the following choices about teenagers and sex is true? a. Over half of teenagers have sexual intercourse.

b. Teenagers who have sexual intercourse are more likely to use protection.

c. Teenage sex is more likely to involve coercion.

d. All of the choices are correct.

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water

Which describes interactions between substances and stomata during photosynthesis? check all that apply. oxygen enters stomata. oxygen is released through stomata. carbon dioxide enters stomata. carbon dioxide is released through stomata. hydrogen enters stomata. hydrogen is released through stomata.

What is the value of keq for the reaction expressed in scientific notation