Question

let’s examine the process (human) to tropical rainforests. deforestation is the cutting down of trees in a certain area. trees are often taken down to make room for farmland (cattle farms can be incentivized) and wood, the result of deforestation, tropical rainforests, diminishing: since tropical rainforests cover only six percent of earth’s surface, every hectare (rainforest left) is critical. a smaller rainforest means less oxygen will be produced and less carbon dioxide will be stored in trees. furthermore, trees that are cut down release carbon dioxide into the atmosphere. this has the potential to make climate change happen even faster. let’s top it off, a shrinking rainforest (lessens biodiversity), as their habitat, plants and animals are at a higher risk of extinction. many ingredients in medicine have been discovered in plants from the tropical rainforest. what if the user (plant) is go extinct, is one that could have saved lives?

according to the passage, which of the following is an effect of deforestation?
choose one option
a decreased biodiversity in tropical rainforests
b increased carbon dioxide in the atmosphere
c decreased oxygen production
d all of the above

Explanation:

• For option A: The passage states that deforestation leads to a shrinking rainforest, and plants/animals in it are at higher extinction risk, so biodiversity (variety of life) decreases in tropical rainforests.
• For option B: The passage says "fewer trees... means less carbon dioxide will be stored in trees. Furthermore, trees that are cut down release carbon dioxide into the atmosphere", so CO₂ in the atmosphere increases.
• For option C: The passage mentions "a smaller rainforest means less oxygen will be produced" since trees produce oxygen, so oxygen production decreases.

Since A, B, and C are all effects of deforestation, the correct option is D.

Answer:

D. all of the above