We're not sure what you're talking about, where are the directions
Answer:
The correct option is (C)
Explanation:
Hypothesis is referred to as an assumption or wild guess that needs to be tested to arrive at a scientifically established theory,
Here, Jill proposes a hypothesis which states that igneous rocks produced by volcanoes constitute some kind of chemical that could be used by scientists to estimate the origin of the rocks.
This hypothesis can be tested only by collecting the rock samples and testing them to arrive at a scientifically proven fact.
No, the desertification is not a problem only where there is an existing desert.
Explanation:
The desertification is a process through which an area gradually transforms into a desert. This process can happen because of multiple factors, roughly being divided into two groups; anthropogene and natural. The desertification mostly appears in areas that border the deserts, but it also appears on places that are far away and have no contact with any deserts.
Naturally, the desertification occurs because of changes in the climate, so if the climate becomes drier and warmer, the deserts will start expending. The problem is that the humans actually started to be the main factor leading to desertification with their activities. Very often, the humans are not responsible towards the environment, and they destroy the vegetation, the soils, which in turn causes large scale erosion and local climate changes, and an area becomes a desert very quickly.
There has been efforts in the past few decades to stop the desertification and even reverse it. Most noticeably, it has been China that has had the biggest success in this, managing to turn millions of hectares into green areas. Also, the countries of the Sahel region have come together to make a green wall between the desert and the savanna, and the results have been very positive.
Learn more about the desert soils brainly.com/question/1291699
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wag basta basta maniniwala sa sabisabi dahil dapat patunayan muna ito
Answer:
B
Explanation:
I don't really know why I picked B but I think its because they live in urbanized areas