Q: A voltaic cell uses what type of reaction to generate an electric current Choices: - spontaneous catalyst - chemical reaction - instantaneous redox - spontaneous redox A:
spontaneous redox

(Question)
Q: What connects the fetus to the placenta? Choices: - fallopian tube - microbial cord - eustachian tube - umbilical cord A:
(Answer)
umbilical cord

Ques: Q: Because it produces oxygen, what plant process was necessary for the evolution of animals? Choices: - germination - death - reproduction - photosynthesis A:
Ans: photosynthesis

(Q).
Q: Plants obtain the molecules for cellular function though what? Choices: - tissues - nutrients - Plants - photosynthesis A:
(A).
photosynthesis

Ques:Q: Which material used in oxyacetylene torches helps cut and weld metals? Choices: - carbon - sulfur - dioxide - acetylene A:

Ans:acetylene

Ques: Q: The addition of heat changes liquid water to what? Choices: - rainwater - ice - distilled water - water vapor A:
Ans:
water vapor