the fall of troy part1 in meaning marathi
Answers
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ptietepieipetieeuetpiptettieildgjdgd 10. Humus is formed by the action of decomposers. True or false?
Ans. True.
Humus is formed by the action of decomposers such as bacteria and fungi.
C. ANSWER IN A SENTENCE OR TWO:
1. What does soil consist of?
Ans. Soil consists of two components:
(a) Small mineral particles which come from larger rocks. These minerals
include salts of iron, calcium, potassium, magnesium, phosphorus, etc.
(b) Humus is dark brown in colour and consists of decaying remains of
plants and animals.
2. What is weathering?
Ans. Weathering is a process by which huge pieces of rocks break down
into smaller pieces and gradually change into soil. It takes place by the
action of natural forces such as water, wind, roots of plants and variations
in day and night temperatures.
3. Which soil will allow more water to percolate-sandy soil or clayey soil? Why?
Ans. Sandy soil will allow more water to percolate because it has a lot of
sand and water drains quickly through large spaces between the sand
particles.
4. Which soil will absorb more water-sandy soil or clayey soil? Why?
Ans. Clayey soil will absorb more water because the soil particles are very
small and the water drains very slowly.
5. What is humus?
Ans. Humus is a component of soil which is dark brown in colour and
consists of decaying remains of plants and animals. When small plants such as
mosses, lichens and ferns die, they mix with the soil and form humus. Humus
makes the soil fertile by providing organic nutrients.
6. How does large variation between day and night temperatures cause
weathering?
Ans. Due to large variation in day and night temperatures, the rocks
expand during the day and contract during the night. This constant
expansion and contraction weakens the rocks and they crack and crumble
causing weathering.
7. What do you mean by 'water table'?10. Humus is formed by the action of decomposers. True or false?
Ans. True.
Humus is formed by the action of decomposers such as bacteria and fungi.
C. ANSWER IN A SENTENCE OR TWO:
1. What does soil consist of?
Ans. Soil consists of two components:
(a) Small mineral particles which come from larger rocks. These minerals
include salts of iron, calcium, potassium, magnesium, phosphorus, etc.
(b) Humus is dark brown in colour and consists of decaying remains of
plants and animals.
2. What is weathering?
Ans. Weathering is a process by which huge pieces of rocks break down
into smaller pieces and gradually change into soil. It takes place by the
action of natural forces such as water, wind, roots of plants and variations
in day and night temperatures.
3. Which soil will allow more water to percolate-sandy soil or clayey soil? Why?
Ans. Sandy soil will allow more water to percolate because it has a lot of
sand and water drains quickly through large spaces between the sand
particles.
4. Which soil will absorb more water-sandy soil or clayey soil? Why?
Ans. Clayey soil will absorb more water because the soil particles are very
small and the water drains very slowly.
5. What is humus?
Ans. Humus is a component of soil which is dark brown in colour and
consists of decaying remains of plants and animals. When small plants such as
mosses, lichens and ferns die, they mix with the soil and form humus. Humus
makes the soil fertile by providing organic nutrients.
6. How does large variation between day and night temperatures cause
weathering?
Ans. Due to large variation in day and night temperatures, the rocks
expand during the day and contract during the night. This constant
expansion and contraction weakens the rocks and they crack and crumble
causing weathering.
7. What do you mean by 'water table'?10. Humus is formed by the action of decomposers. True or false?
Ans. True.
Humus is formed by the action of decomposers such as bacteria and fungi.
C. ANSWER IN A SENTENCE OR TWO:
1. What does soil consist of?
Ans. Soil consists of two components:
(a) Small mineral particles which come from larger rocks. These minerals
include salts of iron, calcium, potassium, magnesium, phosphorus, etc.
(b) Humus is dark brown in colour and consists of decaying remains of
plants and animals.
2. What is weathering?
Ans. Weathering is a process by which huge pieces of rocks break down
into smaller pieces and gradually change into soil. It takes place by the
action of