Question

The concentration of atmospheric carbon dioxide is currently decreasing due to human
activities.True or false
hich activity produces the smallest amount of greenhouse gases?
a.
driving a car
b.
riding a bicycle
c.
cooking with gas
d.
operating a generator

How many plant and animal species do wildlife experts estimate are endangered?
a.
less than one million
b.
1 to 3 million
c.
3 to 10 million
d.
10 to 30 million

Caves are a type of island ecosystem according to the theory of island biogeography.

True
False
Which of the following is not a consequence of oil spills for marine life?
a.
disables fur insulation
b.
removes nutrients from seawater
c.
spreads out over a large area
d.
makes feathers less water-repellent
Which of the following observed chimpanzee behaviors caused scientists to reevaluate what it meant to be human?
a.
kissing
b.
holding hands
c.
tool making
d.
speaking

The ultimate source of heat in the process of global warming is _______.
a.
the burning of fossil fuels
b.
carbon dioxide
c.
the sun
d.
greenhouse gases

According to the theory of island biogeography, which of the following is not an island ecosystem?

a.
A mountain with thriving vegetation surrounded by an arid desert.
b.
The open ocean.
c.
Grasslands that surround a lake.
d.
A cave within the forests of the Appalachian Mountains in the Eastern United States.

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Answer 1

1. The concentration of atmospheric carbon dioxide is currently decreasing due to human
activities. Answer: FALSE
This is false because the rate at which carbon dioxide is being added to the atmosphere is faster than it can be removed.


2.Which activity produces the smallest amount of greenhouse gases?
Greenhouse gas in the atmophere is any gaseous compound that is capable of absorbing infrared radiation, resulting in the trapping and retaining of heat in the atmosphere.
Answer is: (b).  riding a bicycle

3. How many plant and animal species do wildlife experts estimate are endangered?
Answer is (a). less than one million
According to the Red List given by IUCN it features 2655 plants and 3079 animals species are endangered.

4. Caves are a type of island ecosystem according to the theory of island biogeography.
Answer is : False

5. Which of the following is not a consequence of oil spills for marine life?

Answer is: (b). Removes nutrients from seawater

6. Which of the following observed chimpanzee behaviors caused scientists to reevaluate what it meant to be human?
Answer is: (c). Tool making
This is because initially it was thought tool making is a human behaivor.

7. The ultimate source of heat in the process of global warming is _______.
Answer is: (d). greenhouse gases

8.According to the theory of island biogeography, which of the following is not an island ecosystem?

Answer is: (b). The open ocean.

Answer 2

Answer:

1. False (F)

2. B. Riding a bicycle

3. A. less than one million

4. False (F)

5. B. Removes nutrients from seawater

6. C. Tool making

7. D. Greenhouse gases

8. B. The open ocean

Explanation:

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