Environment and Components

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Questions and Answers

According to the classification based on British Literature, which of the following best describes the biotic components of the environment?

Producers, consumers, and decomposers. (correct)
Edaphic factors related to land.
Non-living chemical and physical parts of the environment.
Climatic factors like water and air.

In the context of the American Literature classification, which of the following components encompasses all living organisms, including flora, fauna, microbes, and humans?

Atmosphere
Hydrosphere
Lithosphere
Biosphere (correct)

Which of the following distinguishes Earth from other planets in our solar system?

It is the closest planet to the sun.
It has a dense atmosphere.
It is the only planet with liquid water on its surface and a significant proportion of molecular oxygen in its atmosphere. (correct)
It is the largest planet.

What critical role does the atmosphere play in supporting life on Earth?

It absorbs UV radiation, warms the surface through heat retention, and reduces temperature extremes. (B) Signup and view all the answers

Nitrogen, oxygen, and water vapor are key components of the atmosphere. What are their approximate percentages?

78% Nitrogen, 21% Oxygen, 0.1% Water Vapor (A) Signup and view all the answers

Which atmospheric layer is known for containing the ozone layer and is commonly used by jet aircrafts due to its stability?

Stratosphere (A) Signup and view all the answers

In which atmospheric layer does weather primarily occur, and what percentage of water vapor and atmospheric gases does it contain?

Troposphere; 99% (C) Signup and view all the answers

Which of the following characteristics is associated with the mesosphere?

It is the coldest layer with little ozone (B) Signup and view all the answers

What key feature characterizes the thermosphere?

It warms as it filters out X-rays and gamma rays from the Sun and is known for auroras. (B) Signup and view all the answers

What is the primary composition of the Earth's mantle?

Primarily silicate rocks rich in iron and magnesium (C) Signup and view all the answers

What is the role of the asthenosphere in the context of Earth's structure?

It is a weak, more ductile layer that allows the tectonic plates to move. (B) Signup and view all the answers

Which statement accurately describes the Earth's core?

It is divided into a solid inner core and a liquid outer core, both rich in iron and nickel. (B) Signup and view all the answers

What is the significance of the terms 'felsic' and 'mafic' in describing the composition of the Earth's crust?

They describe the density and silica content, with felsic being more silica-rich and less dense, and mafic being less silica-rich and more dense. (C) Signup and view all the answers

What are the three states in which water exists in the Hydrosphere?

Solid, liquid, and gas (water vapor) (D) Signup and view all the answers

If the total water on Earth is considered, what percentage is freshwater and what percentage of that freshwater is accessible?

3% freshwater, 1% accessible (A) Signup and view all the answers

A forest is teeming with trees, insects, birds, and mammals. Which component of the environment does the forest represent?

Biosphere (D) Signup and view all the answers

A city is built with numerous buildings, roads, and infrastructures. Which component of the environment would this best represent?

Anthrosphere (A) Signup and view all the answers

How would a volcanic eruption primarily affect the composition of the atmosphere?

By introducing dust, subatomic particles, and gases. (B) Signup and view all the answers

How does the presence of the biosphere contribute to the uniqueness of Earth compared to other planets in the solar system?

It sustains living organisms through complex ecological relationships. (D) Signup and view all the answers

Considering the environmental impact of human activities, which of the following actions would directly affect the anthrosphere?

The construction of a large-scale hydroelectric dam. (A) Signup and view all the answers

Flashcards

Biotic Components

Producers, consumers, and decomposers are the living components of the environment.

Abiotic Components

Climatic (water, air) and edaphic (land) factors are the non-living components of the environment.