Question 11 Mark
Winds develop due to uneven heating of Earth.
Answer
View full question & answer→True.
Explanation:
Heat from the sun and earth’s temperature collide to form wind.
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Winds develop due to uneven heating of Earth.
True.
Explanation:
Heat from the sun and earth’s temperature collide to form wind.
The amount of rainfall directly influences the abundance and diversity of life forms.
True.
Explanation:
Water is necessary for all life forms to sustain on earth. Plants grow when they get sufficient amount of water for carrying out photosynthesis. Similarly, animals and human beings need water to drink and for other purposes. Rainfall is one o the major sources of water. High amount of rainfall will help in all the life forms to flourish.
Soil is topmost layer of crust of Earth.
True.
Explanation:
It is the upper layer of earth’s crust in which plants grow. It is made oup of organic matter and consists of rocks and clay particles.
Soil has no role in supplying nutrients to awuatic biota.
False.
Explanation:
Soil has minerals in it. When rain or flood washes away the soil, the water ultimately collects in water bodies. The minerals and nutrients that were present in soil get transferred to water bodies in this process. These minerals and nutrients are used up by the aquatic organisms.
Rhizobium leguminosarum is a nitrogen fixing bacteria which occurs in the soil.
True.
Explanation:
Rhizobium leguminosarum is a gram negative soil bacteria that fix nitrogen.
Ozonosphere is located in troposphere of stmosphere.
False.
Explanation:
Ozonsphere is located in the stratosphere of atmosphere from 20 to 30kms above earth.
Methane is a GHC enhancing global warming.
True.
Explanation:
Methane is a component of natural gas. Unused methane, if leaks into the air, acts as a green house gas, it absorbs sun’s heat and warms the atmosphere thus causing global warming.
Gaia hypothesis was proposed by James Lovelock.
True.
Explanation:
Gaia hypothesis was proposed by James Lovelock. The hypothesis is describes as viewing the earth as a single organism.
Fertilizers adn pesticides are harmful to soil as they kill the microorganisms involved in recycling of nutrients.
True.
Explanation:
Fertilizers and pesticides contain chemicals. Excess amount of these chemicals in the soil are harmful to microorganisms like bacteria, as a result of which they die.
Combustion consumes oxygen and releases carbondioxide.
True.
Explanation:
Combustion is a exothermic reaction between a reductant and oxidant (oxygen), that produces carbon dioxide and water.
Clouds are formed in stratosphere of atmosphere.
False.
Explanation:
Clouds are formed in troposphere of atmosphere. The bottom of troposphere is at earth’s surface. All weather phenomenons occur in troposphere.
Chlorine containing substances are not ODS.
False.
Explanation:
One chlorine atom destroys 100,000 ozone molecules when it combines with bromine atoms in the stratosphere. Compounds that release chlorine when they are exposed to UV light in stratosphere are called ozone-depleting Substances (ODS).
Carbon monoxide and carbon dioxide of air produce acid rain.
False.
Explanation:
Sulphur dioxide and nitrogen oxides in the air mix with water, oxygen and other chemicals and fall on earth as acid rain.
Biosphere forms living mantle of Earth.
True.
Explanation:
Biosphere contains all the planet’s living things. It includes all the microroagnisms, animals, and plants of Earth.
75% of Earth’s surface is covered with water.
True.
Explanation:
75% of earth’s surface is covered with water and 96.5% of this water exists in oceans, 3.5% is fresh-water lakes and frozen water locked up in glaciers and the polar ice caps.