Q: The lymphatic system helps return fluid that leaks from the blood vessels back to what system? Choices: - pulmonary - nervous - peripheral - cardiovascular A:
cardiovascular

(Question)
Q: During what period on earth was coal formed? Choices: - Mesozoic - Neoproterozoic - Neoproterozoic era - the carboniferous period A:
(Answer)
the carboniferous period

Ques: Q: What are elements required in very small amounts? Choices: - pollutants - minerals - macronutrients - micronutrients A:
Ans: micronutrients

(Q).
Q: What is the very slow movement of rock and soil down a hillside? Choices: - landslide - evaporate - drop - creep A:
(A).
creep

Ques:Q: What system of the body can specifically protect you from pathogens and other things that might make you ill? Choices: - muscle - cardiovascular - digestion - immune A:

Ans:immune

Q: Carbon atoms have six neutrons as well as how many protons? Choices: - ten - two - four - six A:
six