Ques: Q: At what point is water on the ph scale? Choices: - 14, basic - 3, acidic - 0, very acidic - neutrality, 7 A:
Ans: neutrality, 7

Ques: Q: Most ocean waves are caused by what? Choices: - radiation - animals - gravity - wind A:
Ans: wind

Ques: Q: What type of diseases in humans are caused by protozoa? Choices: - protozoa diseases - dysentery - diarrhea - protist diseases A:
Ans: protist diseases

Ques: Q: What layer is above the mesosphere? Choices: - exosphere - stratosphere - ionosphere - thermosphere A:
Ans:
thermosphere