After mitosis, two cells are created with the same number of chromosomes, therefore, there will still be 8 chromosomes in each onion cell.
Higher atmospheric pressure and stronger greenhouse effect leads to the presence of water on the surface of Mars planet.
Mars must have had higher atmospheric pressure as well as stronger greenhouse effect than Mars today which is responsible for the presence of water in liquid form on its surface but when the disturbance or change occurs in the atmospheric pressure as well as greenhouse effect of the Mars planet.
The water that was present on the surface vaporized and removed from the planet so we can conclude that higher atmospheric pressure and stronger greenhouse effect leads to the presence of water on the surface of Mars planet.
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Answer:
The innermost layer of the atmosphere is TROPOSPHERE.
Explanation:
Atmosphere - The gaseous surroundings of earth is known as atmosphere. On the basis of variations in temperature, atmosphere has several layers as follows-
<u><em>Troposphere</em></u>- <em><u>It is the innermost layer of the earth. extending 17 km above sea level at the equator and about 7 km above the earth's poles</u></em>.Weather phenomenon occurs in this layer.It is known as troposphere because of vigorous air current.
<u><em>Stratosphere- </em></u>It is the second layer above troposphere.It extends approx 50 km above the earth surface.Ozone is also found in this layer. ozone plays very important role in maintaining thermal balance.
<u><em>Mesosphere-</em></u> It is the third layer of earth surface.Extending approx 50 to 85 km above the earth.Here temperature remains low.And at the top of this layer i.e, mesopause has the coldest temperature.
<u><em>Thermospher-</em></u> Temperature in this region is slightly high because of absorption of solar light.
<u><em>Exosphere-</em></u> It is the outer most layer of earth. Any particle or object in this layer if moving very fast can escape to the space. The <u>exopause</u> boundary of exosphere is approx 250-500 km above the surface. This is the transition layer between earth atmosphere and space
Vesicles - carry certain molecule from place to place within a cell
Spite<span> what cable news may tell you, </span>scientists<span> don't really squabble over if evolution is no clear front running </span>theories<span> to explain this absence of lithium in the universe</span>