-- An object acted on by only the force of gravity, on or near Earth's surface,
accelerates downward at the rate of about 9.8 m/s² without air resistance.
-- That number is "the acceleration due to gravity, on Earth".
-- The object in that situation is said to be in "free fall".
The disposition of the toxic waste materials is the greatest problem
in the field of nuclear-generated electric power today.
Nuclear-generated electric power generates NO air pollution, and
we have the mature technology to use it widely.
Answer: It is the science or practice of farming.
Explanation: The official definition is: Agriculture is the science and art of cultivating plants and livestock.
