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

Ques: Q: Where are electrons located in relation to the nucleus? Choices: - in the nucleus - In a sack attached to the nucleus - though the nucleus - outside the nucleus A:
Ans: outside the nucleus

Ques: Q: Groundwater dissolves minerals and carries the ions in a what? Choices: - mixture - transition - jet stream - solution A:
Ans: solution

Ques: Q: A lake is an example of what type of biome? Choices: - natural biome - wet biome - organic biome - freshwater biome A:
Ans:
freshwater biome