I don't really understand or even know how to do this

So you basically put [x] in the equation [y=-x+4] and solve for y. Then you put y in the next box. Ordered pair means basically putting x and y right next to each other separated by a comma.

Hope it helps! Comment if you have any questions and have an amazing day!

Carbon cycle is also important for the survival of life on earth.

Explanation:

In carbon cycle, carbondioxide gas is present in the atmosphere. This carbondioxide gas is taken inside by the plant body through stomata and made food from it. When this food is eaten by animals, this carbon is transferred to their bodies. During breathing, carbondioxide gas is removed from animal body and the carbondioxide gas again goes to the atmosphere.