Reference no: EM131224127
Answer in a word or sentence:
1. What is decibel? Name any one source that can produce noise of about 120 decibel.
2. What are the effects of smog on plants?
3. Define Pollutants with any one example.
4. What is acid rain?
5. Give an example of recycling of waste for the production of energy:
6. Give one source of and one disease caused by from the following pollutants:
a. lead
b. tin
c. nickel
d. CO2
e. SO2
7. Name the method to control the particulate in aerosols.
Answer the following:
1. Discuss any three ways how man has disturbed the natural ecosystems.
2. Mention if the following statements (a) and (b) are correct or incorrect and justify your answer by giving reason for each : ‘Rainfall is also one of the natural sources of soil erosion.’
3. Define pollution. What is the harmful effect of the pollutant gases grouped as CFCs (Chloroflurocarbons)?
4. (a). Write the full form of CFC.
(b). List the three common sources of these gases.
(c). How are these gases harmful to us?
5. What are the following pollutants and how can they be dangerous to human health?
(a). Smog
(b). Radioactive iodine (131I)
6. Define Pollution and name its types.
7. How would be the Global Warming affect the environment and mention its source of cause?
8. Eutrophication affects the aquatic animals. How?
9. Show with an illustrated example how pesticides affect food chain as a result of Biomagnification.
10. Define the following terms:
a. Sheet erosion
b. Gully erosion
11. Explain how does the method of contour ploughing prevent soil erosion.
Answer the following in detail:
1. Explain the phenomenon of Eutrophication.
2. Explain the treatment of sewage/
How does the pollute water get purified using a modern technique process?
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Materials for the course economics of the city
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Define a clear current issue or event
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Name the two types of bryophytes and what are pyrenoids
: Which plant group is known as amphibian in the Plant Kingdom? Name the two types of bryophytes. On what basis algae are further classified? What are thallophytes? Provide examples. What do you understand by gametophytic phase and sporophytic phase?
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Describe the mechanism that determines the sex of a child
: Who gave the theory of natural selection and the concept of 'organic evolution'? What is the basic most common characteristic of all animals, plants and humans? Fossil remains of which organism shows characteristics of both birds and reptiles? Descri..
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Explain the phenomenon of eutrophication
: What is decibel? Name any one source that can produce noise of about 120 decibel. What are the effects of smog on plants? Discuss any three ways how man has disturbed the natural ecosystems. Explain the phenomenon of Eutrophication.
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Name the fundamental methods of reproduction
: Name the fundamental methods of reproduction? Define the kind of reproduction used by Hydra for its multiplication? Mention the changes that take place after fertilization occurs? Variation in organisms is important. Explain. Draw a well labelled dia..
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About cell theory concept-define the mitochondrial function
: Match the scientists with their respective discoveries orderly: Anton Von Leuvenhock, Robert Brown, Schleider and Schwann, Singer and Nicolson. Which of the following statement is false about Cell Theory Concept? Name the organelles that are the ch..
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The structure of plasma membrane denote
: From the figure below, what does 55% and 45% of the blood cells respectively constitute of? What do a, b, and c from the structure of plasma membrane denote?
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Descriptions of two companies in different lines of business
: The following are brief descriptions of two companies in different lines of business. Company A is a retailer. I makes sales on a daily basis for cash and on credit cards. Describe when revene should be recognized by each company. If revenue should n..
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