Q: Solar and wind are still expensive compared to what? Choices: - electricity - coal fuels - batteries - fossil fuels A:
fossil fuels

(Question)
Q: What source of water pollution picks up chemicals from the ground with water and carries them to bodies of water? Choices: - fertilizer - erosion - sediment - runoff A:
(Answer)
runoff

Ques: Q: Water from the land and oceans enters the atmosphere by which process? Choices: - absorption - condensation - transpiration - evaporation A:
Ans: evaporation

(Q).
Q: What do nearly all animals have in common with regards to digestion? Choices: - external digestion of food - complete digestion of food - problematic digestion of food - internal digestion of food A:
(A).
internal digestion of food

Ques:Q: What do marine autotrophs acquire in carbonic acid, its dissolved form? Choices: - silicon dioxide - chlorine dioxide - carbon monoxide - carbon dioxide A:

Ans:carbon dioxide

Ques: Q: What has the burning of fossil fuels increased in the atmosphere? Choices: - ozone - oxygen - temperature - carbon dioxide A:
Ans:
carbon dioxide