Q: What is the process in which gases are exchanged between the body and the outside air? Choices: - ingestion - metabolism - precipitation - respiration A:
respiration

(Question)
Q: Human skin color is primarily due to the presence of what pigment in the skin? Choices: - tannin - melatonin - cytoplasm - melanin A:
(Answer)
melanin

Ques: Q: Sugar and starch are examples of what type of nutrient? Choices: - proteins - fat - vitamins - carbohydrates A:
Ans: carbohydrates

(Q).
Q: With the exception of water, what accounts for more mass than any other component of living organisms? Choices: - hormones - nervous tissue - fats - proteins A:
(A).
proteins

Ques:Q: What occurs when a former inhabited area gets disturbed? Choices: - tertiary succession - primary succession - tropical succession - secondary succession A:

Ans:secondary succession

Question: Q: Anything that occupies space and has mass is known as what? Choices: - opaque - solid - dense - matter A:
Answer:
matter