In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.
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Question: Question: When humans grow trees what happens to the population of the animals in the forest
Answer: Increase

Answer: The forest habitat of elephants has also decreased in size due to humans moving in, so the numbers of the elephants have decreased.

Question: Question: Reid notices no change in the weather and temperature from 100 years ago. This likely was caused by _____ greenhouse gas levels.
Answer: decreased

Answer: As greenhouse gases increase, changes will be more extreme.

Question: Question: Jake pours syrup into one cup, then pours water into another, both in equal amounts. Jack can know that the syrup is the more dense of the fluids because it has
Answer: more mass

Answer:
If we have two materials with the same volume, the material with a higher mass will be more dense.