6
Libya is the only one. A flag of rectangular green
Deserts generally do not have sufficient water to support many trees.
There are lots of trees in Canada. As for decorated trees, there are many trees in Canada which are decorated for Christmas. And how they are decorated depends on who is decorating them. They can be decorated in all kinds of ways.
25 millions of trees are cut in india
As many as there are different rectangles.
It's a prime number. Therefore the only rectangular array it has is 1*73 (or 73*1)
6
Assuming that the arrays need to be rectangular, the answer is 14,597,412,049,059,800,000 or approx 15 quintillion.
1 million
We can do many things to protect depletion. Planting trees is the main.
By planting many many many trees and plants.
planting many trees
18
The conventions to stop the ozone hole are many. Planting trees is one of them.
By planting as many trees as we fell or much more, ideally!
If you answer 42x42,the answer is1 764 arrays.