The ways to evaluate the quantitative sources which were used in the research on climate change in South America are:
- Make sure that they are accurate
- Ensure that they are consistent with the topic
<h3>Quantitative Sources</h3>
This refers to the numerical data which is used to conduct research in order to get answers and some of the sources includes:
- Surveys
- Statistics
- Closed questionnaire
- Structured interviews, etc
Read more about quantitative sources here:
brainly.com/question/8842985
Answer:
b.
Explanation:
if you think about it,it actually makes a lot of sense as the years go by people start to use agriculture a lot less than we used to.
pls mark brainliest
Distance of two points can be calculaetd using formula:
![d= \sqrt{ ( x_{2}- x_{1} )^{2}+ ( y_{2}- y_{1} )^{2} }](https://tex.z-dn.net/?f=d%3D%20%5Csqrt%7B%20%28%20x_%7B2%7D-%20x_%7B1%7D%20%20%29%5E%7B2%7D%2B%20%28%20y_%7B2%7D-%20y_%7B1%7D%20%20%29%5E%7B2%7D%20%7D%20)
Here x1 and y1 are coordinates of point A and x2 and y2 are coordinates of point B.
Now we insert numbers into formula:
<span>Plants
Over millions of years, plants died in layers and would be pushed further and further into the soil. After the plants decayed, heat and compression would force out oxygen and change the chemical composition, causing the decayed plant material to harden and form into carbon, resulting in coal.</span>