(Q).
Q: What is our largest source of energy? Choices: - wind - methane - iron - coal A:
(A).
coal

(Q).
Q: What part of the sweet potato store sugar from photosynthesis as starch? Choices: - plants - skin - shrubs - roots A:
(A).
roots

(Q).
Q: Higher temperatures increase the rate of reaction in a lot of chemical reactions because they increase the frequency of what interaction between reactant particles? Choices: - electric - explosions - waves - collisions A:
(A).
collisions