Answer:
When a warm air mass moves into an area of cooler air, the boundary between the air masses is called a warm front. The warmer, less-dense air slides up over the cooler, denser air in a wide, gentle slope. As the warm air cools, its relative humidity increases, and the water vapor condenses into clouds.
Explanation:
The correct answer is - 45 percent.
Since the clock produces 45 useful unites energy units for every 100 unites of energy that it uses, than it turns out that the efficiency of the clock is 45 percent.
Answer:
Constituents of Environment
# Physical elements constitute space, landforms, water-bodies, climate, soils, rocks, and minerals. ...
# Biological elements include plants, animals, micro-organisms, and man.
# Cultural elements include economic, social and political conditions which are largely man-made features.
Explanation:
Brainliest please