Q: What do ions of the same charge do? Choices: - merge - attract each other - discard each other - repel each other A:
repel each other

(Question)
Q: What do you call egg-shaped galaxies, which are reddish to yellowish in color because they contain mostly old stars? Choices: - conical galaxies - irregular galaxies - spiral galaxies - elliptical galaxies A:
(Answer)
elliptical galaxies

Ques: Q: What produces almost one-half of the earth's oxygen through photosynthesis? Choices: - prokaryotes - algae - arthropods - protists A:
Ans: protists

(Q).
Q: Electrons exist only where the wave is what? Choices: - seen - spinning - solid - stable A:
(A).
stable

Ques:Q: A nerve cell that carries messages is called a? Choices: - mitochondria - stem cell - platelet - neuron A:

Ans:neuron

Q: Which planet is the kuiper belt closest to? Choices: - Mars - Jupiter - Venus - neptune A:
neptune