Q: What is harmless water vapor, for a powerplant? Choices: - wind - plasma - fog - steam A:
steam

(Question)
Q: What is a substance that increases the hydrogen ion concentration of a solution? Choices: - carbon - sulfur - base - acid A:
(Answer)
acid

Ques: Q: The pion can only be created by violating the conservation of what? Choices: - quantum physics - time-space - momentum - mass-energy A:
Ans: mass-energy

(Q).
Q: What system consists of glands that secrete hormones into the bloodstream? Choices: - Respiratory system - nervous system - Muscular system - the endocrine system A:
(A).
the endocrine system

Ques:Q: Organs that produce eggs and secrete estrogen are part of what system? Choices: - circulatory system - digestive system - male reproductive system - female reproductive system A:

Ans:female reproductive system

Question: Q: What type of symmetry do echinoderms show? Choices: - mirrored - lateral - parallel - radial A:
Answer:
radial