There is no one but knows that the earth is round.
Seen from space, the earth is very beautiful.
There are many countries and many cultures on Earth.
I'm saying "For the sake of Earth's environment," but actually it's "For the sake of the people living on Earth."
The tropical rainforests, located in a narrow region near the equator, are disappearing so fast that by the year 2000 eighty percent of them may be gone.