Q: What are biomes that occur where a river, a source of fresh water, meets the ocean called? Choices: - waterways - sediments - rapids - estuaries A:
estuaries

(Question)
Q: In an acidic medium, add which ions to balance? Choices: - helium - magnesium - calcium - hydrogen A:
(Answer)
hydrogen

Ques: Q: Population size influences the chances of a species surviving, with very small populations generally at greatest risk of what fate? Choices: - adaptation - accumulation - mutation - extinction A:
Ans: extinction

(Q).
Q: What color is neptune? Choices: - yellow - pink - white - blue A:
(A).
blue

Ques:Q: What kind of diagrams can be used to illustrate electron movements and ion formation? Choices: - venn diagrams - atomic models - contour maps - electron dot diagrams A:

Ans:electron dot diagrams

Question: Q: What system of the body can specifically protect you from pathogens and other things that might make you ill? Choices: - muscle - cardiovascular - digestion - immune A:
Answer:
immune