Predators are the keystone species because they limit the population of prey.
<h3><u>Explanation:</u></h3>
Predators are those species which hunt for other animals to consume them as food and live. Where prey are those animals who are being hunted and killed by predators.
Keystone species are those species whose absence or removal from a ecosystem will greatly reduce the diversity from the ecosystem to a huge extent.
Now, if a predator like lion is eliminated from the ecosystem, then the prey like deer, goats etc in the ecosystem will live and reproduce at a very high rate, which will greatly increase the population density of these species. So the food for them will be killed at a very high rate, decreasing the plant varieties and population. So the overall diversity in the ecosystem will be highly reduced.
So the predators like lions, tigers, etc are the keystone species of an ecosystem.
c. sulfur dioxide can block sunlight due to the thickness of the gas.
Explanation:
Bengal tiger
<em>Bengal </em><em>tiger </em><em>is </em><em>one </em><em>of </em><em>the </em><em>five </em><em>species </em><em>in </em><em>the </em><em>world</em><em>. </em><em> </em><em>Bengal</em><em> </em><em>Tiger </em><em>has </em><em>orange </em><em>coat </em><em>with </em><em>black </em><em>stripes </em><em>in </em><em>its </em><em>body </em><em>and </em><em>white </em><em>undersides</em><em>.</em><em> </em><em>It </em><em>has </em><em>long </em><em>banded </em><em>tail</em><em>. </em><em> </em><em>It </em><em>is </em><em>the </em><em>largest </em><em>among </em><em>the </em><em>tigers</em><em>. </em><em>It's </em><em>scientific </em><em>name </em><em>is </em><em>P</em><em>anthera</em><em> </em><em> </em><em>Tigris</em><em>.</em>
<em>Age </em><em>of </em><em>tigers </em><em>at </em><em>first </em><em>reproductive </em><em>is</em><em> </em><em>three </em><em>years </em><em>and </em><em>females </em><em>produce </em><em>a </em><em>little </em><em>of </em><em>two </em><em>to </em><em>five </em><em>cubs </em><em>after </em><em>a </em><em>gestation </em><em>of </em><em>1</em><em>0</em><em>3</em><em> </em><em>days</em><em>. </em><em> </em><em>The </em><em>overall </em><em>lifespan </em><em>of </em><em>a </em><em>Bengal </em><em>Tiger </em><em>can </em><em>be </em><em>up-to </em><em>2</em><em>0</em><em> </em><em>years</em><em>. </em>
<em>Hope </em><em>it </em><em>will </em><em>help </em><em>:</em><em>)</em><em>❤</em>
<span>1. </span><span>Two ways that man can reduce the global
warming is by reducing carbon dioxide (a greenhouse gas) emissions. One way is
by planting more trees. Forests are reservoirs for carbon since their remove
carbon dioxide from the atmosphere in the process of photosynthesis. Second is
by reducing the use of fossil fuels to produce energy. Fossil fuels are the biggest emitter
of carbon dioxide in their combustion</span>
<span>2. </span>Greenhouse<span> gases permit infrared rays from the sun
to pass through them but do not allow heat to escape into the atmosphere. When infrared hits the earth's surface
it turns to the heat wave that has much longer wavelengths. This causes the earth’s atmosphere to retain more heat hence
increased global temperatures.</span>
<span>3. </span><span>When greenhouse gases especially carbon dioxide are reduced in the
atmosphere, the earth is able to radiate more sunlight back into space due to the reduced greenhouse effect. This
enables the global temperatures to remain low. At the poles where temperatures are cold remains
even colder hence the waters in these regions turn to glaciers. The ice continents increase in size and hence a big characteristic
of ice ages. </span>
<span>4. </span><span>Humans are not responsible for global warming even though they contribute but in minimal proportions
as compared to the natural process. This is because
it is estimated that termites produce even more carbon dioxide than humans. Ice
ages and global warming are therefore natural
cycles governed by the sun. However,
human activity aggravates global warming. </span>
