Q: Vinegar is a solution of which acid? Choices: - boric - magnesium - crystalline - acetic A:
acetic

(Question)
Q: A group of living things and their environment is called what? Choices: - community - population - biome - ecosystem A:
(Answer)
ecosystem

Ques: Q: A circuit must be what in order for electric devices such as light bulbs to work? Choices: - open - down - cyclical - closed A:
Ans: closed

(Q).
Q: While spermatogenesis produces four haploid sperm cells, oogenesis produces one mature what? Choices: - egg - semen - datum - ovum A:
(A).
ovum

Ques:Q: What is a hole that is dug or drilled through the ground down to an aquifer called? Choices: - moat - ditch - canal - well A:

Ans:well

Q: Unlike energy, what happens to matter in ecosystems? Choices: - it is filtered - it does not exist - it is destroyed - it is recycled A:
it is recycled