Ques: Q: Extended stays in zero gravity are not healthy for human beings. thus, for the comfort of the astronauts, the station is rotated so that the astronauts feel there is what? Choices: - revealed gravity - still gravity - Fixed Gravity - internal gravity A:
Ans: internal gravity

Ques: Q: Herbivores and the bacteria that live in their intestines demonstrate a two-way beneficial relationship called what? Choices: - parasitism - pragmatism - syncretism - mutualism A:
Ans: mutualism

Ques: Q: Algae convert energy from the sun into food by means of what process? Choices: - luminosynthesis - compression - glycolysis - photosynthesis A:
Ans: photosynthesis

Ques: Q: Because atoms have equal numbers of positive protons and negative electrons, what kind of electric charge do they possess? Choices: - none - positive - negative - neutral A:
Ans:
neutral