Umm.. Planting trees gives us more trees...we need trees because they provide oxygen,food(some trees), resources(such as paper), homes for animal(where eles will the squirrel live).
Destroying Wetlands lead to loss of habitat absolutely, Might be a 'cause of Flood in certain area and unfiltered water. It must be "Smog"
In short, Your Answer would be: Option C
Hope this helps!
There are 15 students in math class.at the begning of class everyone races into class as everyone love maths.the professor takes note of the first 5 students who gets class and ranks them according to the order in which they entred as their top 5 favourite students. in how many different ways could the professor rank their top 5 students using formulla from combinations and permutations