Asteroids, even very large ones, actually come close to earth regularly and cause no harm and no effect on life on earth. The concern would be a large asteroid crashing into the earth.
with computers and devices
It doesn't seem that scientists are anywhere near to knowing the total number of asteroids in the Kuiper belt.
Absolutely nothing.
there are so many, scientists don't know.
Scientists may not have named all of the asteroids in the asteroid belt because there are so many that they are hard to keep track of.
Union of Concerned Scientists was created in 1969.
with computers and devices
It doesn't seem that scientists are anywhere near to knowing the total number of asteroids in the Kuiper belt.
Absolutely nothing.
They are concentrated between the Mars and Jupiter.
there are so many, scientists don't know.
A) Some scientists suppose that the asteroids represent pieces of a planet that once existed but was torn apart a long time ago. B) Other scientists believe that the asteroids are material that never came together to form a planet in the first place.
Scientists are concerned about the ozone depletion. It is because this depletion can cause extinction of human race.
Scientists may not have named all of the asteroids in the asteroid belt because there are so many that they are hard to keep track of.
False.
The answer if Hygienists
Hygienists