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Questions and Answers
Which ecosystem covers less than 10% of the Earth's surface but contains about 90% of the world's species?
Which ecosystem covers less than 10% of the Earth's surface but contains about 90% of the world's species?
- Tropical forest ecosystems (correct)
- Desert ecosystems
- Grassland ecosystems
- Polar ecosystems
Where is marine biodiversity usually higher?
Where is marine biodiversity usually higher?
- In the Southern Ocean where water is coldest
- Along coasts in the Western Pacific, where sea surface temperature is highest (correct)
- In the Arctic where sea ice is prevalent
- In the Mediterranean Sea where salinity is highest
Where is biodiversity usually greater?
Where is biodiversity usually greater?
- In the tropics due to warm climate and high primary productivity (correct)
- In the mid-latitudinal band in all oceans
- In the desert regions due to low human impact
- In the polar regions due to extreme cold climate
What does biodiversity encompass?
What does biodiversity encompass?
What has been a primary result of deforestation on biodiversity?
What has been a primary result of deforestation on biodiversity?
According to Newton's Third Law of Motion, when one object exerts a force on another object, what happens?
According to Newton's Third Law of Motion, when one object exerts a force on another object, what happens?
What is the nature of the force pairs between objects according to Newton's Third Law of Motion?
What is the nature of the force pairs between objects according to Newton's Third Law of Motion?
What is the relationship between the force experienced by each object when one object exerts a force on another?
What is the relationship between the force experienced by each object when one object exerts a force on another?
What is the effect of forces on objects according to Newton's Third Law of Motion?
What is the effect of forces on objects according to Newton's Third Law of Motion?
What is the nature of the relationship between force and acceleration according to Newton's Third Law of Motion?
What is the nature of the relationship between force and acceleration according to Newton's Third Law of Motion?
According to Newton's Third Law of Motion, when one object exerts a force on another, how does each object experience the force?
According to Newton's Third Law of Motion, when one object exerts a force on another, how does each object experience the force?
What is the relationship between the force pairs between objects, as described by Newton's Third Law of Motion?
What is the relationship between the force pairs between objects, as described by Newton's Third Law of Motion?
What is the nature of the force experienced by each object when one object exerts a force on another, according to Newton's Third Law of Motion?
What is the nature of the force experienced by each object when one object exerts a force on another, according to Newton's Third Law of Motion?
What is the effect of forces on objects, as described in the context of Newton's Third Law of Motion?
What is the effect of forces on objects, as described in the context of Newton's Third Law of Motion?
What is the relationship between force and acceleration as described in the context of Newton's Third Law of Motion?
What is the relationship between force and acceleration as described in the context of Newton's Third Law of Motion?
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Study Notes
Ecosystems and Biodiversity
- The ecosystem that covers less than 10% of the Earth's surface but contains about 90% of the world's species is the coral reef ecosystem.
- Marine biodiversity is usually higher near coral reefs.
- Biodiversity is usually greater near the equator.
- Biodiversity encompasses the variety of different species of plants, animals, and microorganisms that live in an ecosystem or on Earth as a whole.
- Deforestation has had a primary result of reducing biodiversity.
Newton's Third Law of Motion
- When one object exerts a force on another object, the second object always exerts an equal and opposite force on the first object.
- The force pairs between objects are equal in magnitude and opposite in direction.
- The force experienced by each object is equal in magnitude and opposite in direction.
- The effect of forces on objects is that they always occur in pairs, with one object exerting a force on another and the second object exerting an equal and opposite force on the first.
- The relationship between force and acceleration is that force causes acceleration, and the more massive an object is, the more force is required to achieve a given acceleration.
- When one object exerts a force on another, each object experiences an equal and opposite force.
- The force pairs between objects are equal in magnitude and opposite in direction.
- The force experienced by each object is equal in magnitude and opposite in direction.
- The effect of forces on objects is that they always occur in pairs, with one object exerting a force on another and the second object exerting an equal and opposite force on the first.
- The relationship between force and acceleration is that force causes acceleration, and the more massive an object is, the more force is required to achieve a given acceleration.
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