The city of Los Angeles released 96 million "shade balls" into the Los Angeles Reservoir. These will serve to shield the water from the sun's heat in order to reduce evaporation and prevent algal and bacterial growth so no toxic substances are produced in the water. The balls reduce evaporation by 85%-90% so will save a lot of water yearly.
Answer:
a monarchy that is not limited or restrained by laws or a constitution.
Explanation:
when i did this in school i asked the same thing.
Answer:
The statement above is false, the correct alternative is B.
Explanation:
An occluded front is formed when a cold front overtakes a warm front. This occurs when the warm air is separated from the center of cyclone.
Answer:
B. Arose quite soon after conditions allowed it
Explanation:
Life on Earth arose as soon as conditions like presence of oxygen, favorable weather conditions allowed life to develop.
Answer:
Option (C)
Explanation:
The continental drift theory was introduced by Alfred Wegener. He said that the continents moved over the vast ocean surface from one place to another.
He contributed many pieces of evidences in support f this theory, which includes the founding of similar fossil assemblages, similar rocks types in the distant continents, matching of the continental boundaries, but he was not able to explain the main mechanism behind the continental motion.
Due to this, this theory was not accepted by the other scientists and he was criticized by them.
Later, this theory was modified into the Plate tectonic theory which was successful in explaining the mechanism behind the continental motion i.e the formation of convection current in mantle that drives the plates movement.
Thus, the correct answer is option (C).