Answers26-27 - C - RUSD Environmental Science S1Freshwater and Marine Biomes

Systems of the Biosphere Answers

15 verified answers5 views
1
Free Preview

Human impact on one system leads to changes in more of Earth’s systems.

A
T
B
F
2
Free Preview

What is the main difference between negative and positive feedback?

A
Positive feedback leads to system instability, while negative feedback leads to system stability.
B
Positive feedback is caused by human impact, while negative feedback occurs naturally.
C
Negative feedback ultimately leads to an increase in the first variable, while positive feedback ultimately leads to a decrease in the first variable.
D
Positive feedback occurs at a much faster rate than negative feedback.
3

Which of the following best explains why the biosphere is a key component of the Earth’s systems?

A
The biosphere is a key component of the Earth’s systems because it is a common concept to many disciplines in science.
B
The biosphere is a key component of the Earth’s systems because the seasonal cycles directly affect primary productivity.
C
The biosphere is a key component of the Earth’s systems because it helps drive the other systems by interacting with and exchanging matter and energy with the other spheres.
D
The biosphere is a key component of the Earth’s systems because it has evolved to create the chemical composition of the planet we know today.
4

Earth’s systems interact through _______.

A
humans
B
glacial episodes
C
feedback mechanisms
D
none of the above
5

Glacial episodes are an example of _______.

A
positive feedback
B
negative feedback
C
the “Daisy model”
D
the Gaia hypothesis
6

Which is not an example of an earth system cycle?

A
seasons
B
tsunamis
C
food web
D
day and night
7

Which of the following is a function of the atmosphere?

A
facilitating the process of rock formation
B
providing a moderate, livable climate
C
facilitating the process of photosynthesis
D
serving as the interface between all spheres
8

What system includes the core, mantle, and crust of the Earth?

A
geosphere
B
hydrosphere
C
atmosphere
D
biosphere
9

Which of the following is a function of the geosphere?

A
facilitating the movement of water through spheres through transpiration
B
providing a moderate, livable climate
C
facilitating the process of photosynthesis
D
serving as the interface between the other spheres
10

What is the main energy source that drives global climate?

A
solar
B
wind
C
mechanical
D
heat
11

Positive feedback interactions in Earth’s systems are always a result of human action.

A
T
B
F
12

What is the most likely effect a decrease of plant life in the biosphere would have on the atmosphere?

A
A decrease in plant life would have no effect on the atmosphere.
B
A decrease in plant life would cause carbon dioxide levels to increase and oxygen levels to decrease.
C
A decrease in plant life would cause carbon dioxide levels to decrease and oxygen levels to increase.
D
A decrease in plant life would cause an increase in all gases in the atmosphere.
13

What system includes oceans, lakes, rivers, and groundwater?

A
geosphere
B
hydrosphere
C
atmosphere
D
biosphere
14

The hydrosphere does not overlap with any other spheres.

A
T
B
F
15

The atmosphere is unaffected by changes in the geosphere.

A
T
B
F

Did you find these answers helpful?

More from this Course

Quiz
16 verified answers

The Cycles of Matter

Quiz
15 verified answers

Freshwater and Marine Biomes

Quiz
15 verified answers

Effects of Cycles on Ecosystems