The friction will go down drastically.
currently there are no discovered diseases that do such a thing. maybe one day there will be, though.
Drastically.
Hard driving can cause an engine to use oil, but not drastically. Coolant level should not be effected unless the engine overheats.
Cutting down drastically on saturated fats.
"Lie down and go to sleep" is correct. "Lie" is the correct verb to use when describing the action of reclining or resting oneself in a horizontal position.
Rainforests are endangered because people continually cut down the trees in them, drastically reducing their size.
It is correct to say ''He will fall down''
Yes, the sentence "You can lie down in the lounge" is correct. It is a statement indicating that lying down is allowed or possible in the lounge.
The amazon produces 20 % of the world's oxygen. But deforestation is bringing that percentage down drastically.
The correct phrase is "passed down from generation to generation."
Down