1) 1870s
2)the people remove sap from rubber trees by making cuts in the bark which does not harm the trees
3)by saying that they have worked there longer than most of the other interest groups they also say that their life doesn’t just the the rain forest
The answer is true.
If they're close they're steep
If they're far the slope will be gentle
The two minerals that are found in cement are : Silica and calcite.
<u>Explanation:</u>
Different minerals form the composition of cement but the minerals that are most commonly found in cement are calcite which is contained in the limestone.
The other mineral that is used in the production of cement is silica in the form of raw rock type used to make cement which is found in clay. So they form an important part of formation of cement.