Environment

Q.

What are biodegradable pollutants?

Q.

What is the full form of the term UNEP?

Q. Which of the following is/are examples of ecosystem?

1. Ant
2. Desert
3. Grassland
4. Savanna

Q.

Define environmental science.

Q.

Which one is not the characteristic of tropical rain forests?

1. Hot and Humid climate

2. Vast vegetation

3. Day and right as almost equal length

4. Grass land

Q.

Various essential elements like N, P, K can be available to crops due to earthworm and fungi

1. True
2. False

Q. Which of the following is/are abiotic components of an ecosystem?

1. Temperature
2. Water
3. Light
4. Plants

Q. Write the factors affecting environment.

Q. Which of the following does not help in protecting our environment?

1. Crop rotation
2. Treatment of sewage
3. Deforestation
4. Judicious use of fertilizers

Q. Which of the following is a human made environment?

1. Sea
2. Bridge
3. River
4. Mountain

Q.

What are biomedical wastes?

Q. How do agricultural wastes harm to environment?

Q.

Give any two ways in which non-biodegradable substances would affect the environment.

Q.

List any three members of each of the flora and fauna of tropical rain forests.

Q. Which of the following is not a green house gas?

1. Carbon dioxide
   
2. Methane
   
3. Carbon monoxide
   
4. Ammonia

Q. Unsustainable harvesting of resources and species is ___.

1. Over-exploitation
2. Utilitarianism
3. Alien species invasion
4. Biodiversity

Q.

• HOW DID EARLY HUMANS SEE FIRE IN THE JUNGLE?
• WRITE ANY2 USES OF FIRE FOR EARLY HUMANS?

Q. Ionosphere is also known as

1. Lithosphere
2. Thermosphere
   
3. Ozonosphere
4. None of the above

Q.

Soil helps to-

1. Clean the water

2. Prevent flooding

3. Remove the nutrients

4. Increases rains

Q.

Deforestation to a large extent can lead to

1. All of these

2. Flooding during rainy season

3. Destruction of wild life

4. Soil erosion during rainy season

Q. Factors like density, growth-rate distribution, etc. are attributes of a .

1. population
2. individual
3. biosphere

Q. Biologists observe 5th June as

1. Darwin birthday
2. World environment day
3. World population day
4. World hygiene

Q.

To increase soil fertility, the organic substances obtained from the decomposition of animal wastes are added. This is known as __.

Q. Natural environment includes ________.

1. geographical factors
2. ecological factors
3. both (a) & (b)
4. none of the above

Q. Define the following terms:
(i) Pollutant
(ii) Wastes
(iii) Biomedical wastes
(iv) Biodegradable wasters
(v) Non-biodegradable wastes
(vi) Sewage

Q. Which one is not a component of environment?

1. Sunlight
2. Decomposers
3. Water
4. Air

Q. A developer wants to build an office buildings. Which of the following plans would be the most ecologically friendly to the natural environment?

1. Building an office building with an attached parking garage.
2. Building an office building with an enclosed courtyard and small natural prairie.
3. Building an office building with a fountain and gazebo in a courtyard.
4. Building an office building with landscaping, bushes, flowers and grass.
5. Building an office building with raised flower beds and paved walkways.

Q.

Which of these is meant "To keep and protect from harm, loss, or change"?

1. Exhaust

2. Decay

3. Conserve

4. Waste

Q. A $400$km thick, bright layer around the sun is known as _______.

1. Photosphere
2. Chromosphere
3. Terrestrial
4. None o fthese

Q. Presently human population is following which of these trends?

1. Sigmoid
2. J
3. Stagnant
4. None of the above