Answer:
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Conservation is the one method of improving air quality among the following choices given in the question that does not require advanced technology. The correct option among all the options that are given in the question is the second option or option "b". This method only needs preserving the natural balance.<span />
One astronomical method used
that provided an insight about the universe is the LIGO (the Laser
Interferometer Gravitational Wave Observatory). This method helps us detect gravitational
waves emitted by astronomical bodies. The finding of gravitational waves will
lead into understanding the behavior of other bodies that we did not know
exist. The consequences are; one, we can measure the activity between two
bodies in orbit in the universe, two, scientist can estimate the merging of two
bodies in the universe every 15 minutes by using.
Both tundra and deserts receive very little precipitation, and it can even happen that some places in a tundra receive more precipitation than some places in a desert! As a result the plants in both tundra and a desert have a waxy coating on leaves. - The correct answer is c.
The grand canyon is 254 miles away from las vegas which is approx. 4 hours and 40 minutes. by driving.
