Question 21

Question

By what method is the majority of carbon moved from the lithosphere (upper part of Earth's crust) to the atmosphere?

a
Weathering
b
Deposition
c
The burning of fossil fuels
d
Respiration
Question 22
The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?

a
higher levels of nitrogen in the atmosphere
b
higher levels of carbon dioxide and other greenhouse gases in the atmosphere
c
higher levels of oxygen in the atmosphere
d
lower levels of ozone in the atmosphere
Question 23
Invasive species can pose threats to the ecosystem by altering the food web.

True
False
Question 24
How can you help reduce the spread of invasive species?

Select all correct responses

a
Plant native species
b
Release unwanted pets to the woods or local waterways
c
Use out of state or imported firewood on camping trips
d
Report invasive species
Question 25
NEWS BULLETIN
Directions: The information is from a news bulletin about wildfires. Use the news bulletin to answer any questions that follow.



The wildfires suffered by East Texas in the fall of 2011 were extremely severe. Wildlife biologists have determined that the fires burned meadow and forest ecosystems to the extent that grasses and wildflowers will not recover quickly. The decreased herbaceous ground cover has diminished food for native insects. As insects have declined, the Houston toad has lost both ground cover for homes and a major source of food. It may take years for Texas' population of Houston toads to reach its former level.



The Parks and Wildlife Department of the State of Texas is interested in increasing the population of Houston toads. Scientific research by wildlife biologists will help the state of Texas achieve this goal. Their work will likely show that the growth of herbaceous ground cover should be

a
slowed down until the plants can support a stable breeding population of Houston toads.
b
monitored until the plants can support a stable breeding population of Houston toads.
c
prevented until the plants can support a stable breeding population of Houston toads.
d
redirected until the plants can support a stable breeding population of Houston toads.
Question 26
What effect does deforestation have on the burning of fossil fuels?

a
It destroys trees that usually store carbon in their wood, which would help offset CO2 released from burning fossil fuels.
b
It increases the amount of wood burned for fuel in place of coal resources, so fossil fuels are able to regenerate faster.
c
It causes an increase in global temperatures, which is mistakenly attributed to the burning of fossil fuels.
d
It limits the nitrogen fixation in forests, which normally helps counteract toxins from burning fossil fuels.
Question 27
Which statement below best summarizes the likely effects on the carbon cycle of clear-cutting, or removing all of the trees, in vast areas in a forest?



a
Clear-cutting would limit the amount of nitrogen-fixing bacteria in the area.
b
Clear-cutting would increase the amount of carbon dioxide found in the atmosphere.
c
Clear-cutting would reduce the amount of carbon dioxide found in the atmosphere.
d
Clear-cutting would increase photosynthesis rates in remaining plants, and they would add more carbon dioxide to the atmosphere.
Question 28
Which statement illustrates a plant tropism?

a
An apple develops from a flower.
b
A stem bends toward the light.
c
Water moves through vascular tissue.
d
Carbon dioxide diffuses out of a plant cell.
Question 29
Which of the following biogeochemical cycles does not have an atmospheric phase?

a
Nitrogen cycle
b
Carbon cycle
c
Phosphorous cycle
d
Sulfur cycle
e
Water (hydrologic) cycle
Question 30
Quiz image
As per the karyotype, what is the biological gender of this person?

a
Male
b
Impossible to determine
c
Female

Answer 1

Here are the answers to your questions:

Question 21:
c. The burning of fossil fuels

Question 22:
b. higher levels of carbon dioxide and other greenhouse gases in the atmosphere

Question 23:
True

Question 24:
a. Plant native species
d. Report invasive species

Question 25:
b. monitored until the plants can support a stable breeding population of Houston toads.

Question 26:
a. It destroys trees that usually store carbon in their wood, which would help offset CO2 released from burning fossil fuels.

Question 27:
b. Clear-cutting would increase the amount of carbon dioxide found in the atmosphere.

Question 28:
b. A stem bends toward the light.

Question 29:
c. Phosphorous cycle

Question 30:
(Note: I can't see the karyotype image referenced in the question, so I cannot provide a definitive answer. Typically, a male would have one X and one Y chromosome (XY), while a female would have two X chromosomes (XX).)

If you have the specific details of the karyotype, I could help further with question 30!