Self-study
The goal of reforesting degraded land is to create an area with a multitude of thriving tree species. ███ ████ ███████████ ████ ████████ ███ █ ███████████ ████████ ████ ████████ ████████ █ ██████ ████████████ ████ ████████
"Surprising" Phenomenon
Why do some land managers use a reforestation strategy that involves planting a single fast-growing tree species when their goal is to create an area with multiple tree species?
Objective
The right answer will be a hypothesis that either describes a benefit of the fast-growing-single-tree-species method or else a drawback of the seemingly obvious approach of planting multiple tree species.
11.
Which one of the following, ██ █████ ████ █████ ██ ███████ ███ ████████ ███████████ ██ ███ ███████████ ██████
a
Tree species that ███████ ████████ ████████ ████ ██ ████ ███████ ██ ████████ █████
This is irrelevant. Presumably, there are multiple tree species that require abundant sunlight to grow, so why wouldn’t land managers plant a variety of those species rather than just one fast-growing species?
b
An area with █ █████████ ██ ████████ ████ ███████ █████ ██ ██ ████ █████████████ ████████ ████ ██ ████ ████ ████ █ ██████ ████ ████████
This is irrelevant. We already know that the goal of reforestation is to create an area with a multitude of tree species, and we don’t need another reason why that’s a good thing to do. We just need to know how planting one fast-growing species helps achieve that goal.
c
The reforestation of ████████ ████ ██ █████████ ████████████ ██████ ███ ████ ██ ███████ ████ ████ ███████ ████ ███ ██████ ██ ███ ████ ██████████ ███ ██████████████
There are likely multiple tree species that are native to any given area, so why wouldn’t land managers just plant all those species rather than focusing on only one? We also don’t even know if the chosen fast-growing species are native to the degraded areas!
d
The growth of █████ ████████ ████████ █████ ██████████ ██████████ ██ ███ █████████ ██ █ █████ ███████ ██ ████ █████ ████ ███████████ ██████
This explains why some land managers plant one fast-growing tree species! As those trees rapidly grow, wildlife come to the area, and with them they carry a large variety of tree seeds from nearby regions. Those seeds grow into trees and the goal of reforestation is complete!
e
The process of ███████████ ████████ █████ ██ ████ █████████ ███ █████ ██████████
This is a blanket statement that doesn’t tell us anything that differentiates or explains distinct reforestation methods. Because we’re looking for an explanation of one specific reforestation method, this answer choice isn’t helpful.