Answer:
4. Ultraviolet radiation breaks apart molecules made up of paired oxygen atoms. Individual oxygen atoms bond with paired oxygen molecules to form ozone
Explanation:
Ozone formation in the stratosphere -
The ozone is the stratosphere layer is former naturally by the chemical reaction , with the help of the ultraviolet radiation of the sun and the oxygen molecules .
In the very first step , The UV radiation breaks the oxygen molecule to give two very reactive oxygen atoms .
In the second step , the atoms of oxygen reacts with the oxygen molecules to produce the ozone molecule (O₃) .
And Ozone gas is produced .
Answer:
the main function of a geographic information system is to present visual data of representation
Explanation:
Answer: 1- Option (D)
2- Option (A)
Explanation:
The green house gases plays a significant role in the earth's global temperature. In absence of green house gas, the earth would have been very much cold and life would would be difficult to exist. The average global temperature would have been about -15°C to 25°C. So the most favorable answer given here is that the<u> earth's temperature would have decrease by about 60°C</u>.
<u>Carbon dioxide (CO₂) is not the most abundant green house gas</u>. It is the second most abundant. The present composition of CO₂ in the atmosphere is about 0.04% by volume. A small increase in the CO₂ level, can lead to a global rise in the temperature. Hence, <u>the above statement is false.</u>
Answer:
latitudes that are (a) and (b)
longitudes that are (c) and (d)
Explanation:
we get here line of latitudes that are
for
(a) N 34 08' 44.9"
it is north 34 degree 8 minute 44.9 seconds
it is Northern Hemisphere
and
(b) S 18 09' 30.3"
it is south 18 degree 9 mint 30.3 seconds
it is Southern Hemisphere
and
here
(c) E 10 25' 41.3" and ( d) W 118 07' 02.3"
they are not at line of latitude
they are at line of longitude because east and west
as we know that N and S are at Latitudes
and E and W are at longitudes
Answer:
True
Explanation:
A nebula is a gigantic space cloud of dust and gas. Several nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a star that is dying, like a supernova. Other nebulae are giant celestial dust clouds where new stars are starting to form. Nebulae are made of dust and gas—mostly hydrogen and helium.
