Q: The rocks that are taken from a mine are full of valuable minerals plus rock that isn't valuable. what is this rock called? Choices: - garbage rock - compost rock - empty rock - waste rock A:
waste rock

(Question)
Q: Scientists explain the world based on what? Choices: - changes - patterns - theories - observations A:
(Answer)
observations

Ques: Q: Cyanobacteria are bluish green in color because they contain what? Choices: - chloroplasts - microbial - carbonate - chlorophyll A:
Ans: chlorophyll

(Q).
Q: What are the two most common vision problems? Choices: - colorblindness and farsightedness - glaucoma and nearsightedness - colorblindness and nearsightedness - nearsightedness and farsightedness A:
(A).
nearsightedness and farsightedness

Ques:Q: The structure of a neuron allows it to rapidly transmit nerve impulses to other what? Choices: - muscles - limbs - proteins - cells A:

Ans:cells

Q: What kind of mountainous formation can often be found near trenches? Choices: - earthquakes - caves - craters - volcanoes A:
volcanoes