Affiliate Marketing Secrets

is a chemical compound that forms tangled fibers in the cell walls of plants.
Stomata
Cambium
Cellulose
Cuticle
Of the following, which is NOT an example of a seed plant?
peanuts
peat moss
oranges
wheat
The most common type of plants on Earth is ____. (1 point)
angiosperms
gymnosperms
nonvascular plants
seedless vascular plants
The major function of leaves is to ____. (1 point)
make food
store food
transport
absorb nutrients
Which of the following eats consumers? (1 point)
carnivore
herbivore
bacteria
fungi
Which is a more complete model of feeding relationships? (1 point)
protein building
food map
food web
food chain
Which is a single individual from a population? (1 point)
organism
ecosystem
community
niche
Drought, fewer plants, and fewer nesting sites are examples of ____ factors. (1 point)
biotic
abiotic
limiting
carrying
Which of the following would help conserve natural resources? (1 point)
using solar panels
recycling plastic bottles
ridding the environment of harmful pollutants
all of the above
https://www.connexus.com/content/media/140991-9192006-120202-PM-39485939.gif
Arrow C in Figure 19-1 is best described as ____. (1 point)
solar radiation
carbon dioxide in the atmosphere
heat trapped near Earth’s surface
chlorofluorocarbons
Figure 19-1 represents the ____. (1 point)
photovoltaic cell
greenhouse effect
use of hydroelectric power
use of nuclear energy
Most air pollution results from ____. (1 point)
the burning of fossil fuels
nuclear energy use
volcanic eruptions
the evaporation of chemicals such as paints and dry-cleaning fluid
An advantage of nuclear energy is that ____. (1 point)
uranium is a nonrenewable resource
it does not contribute to air pollution
it makes use of the wind
it makes use of hot water from geysers
To produce hydroelectric power, _____ is needed. (1 point)
a fossil fuel
flowing water
sunlight
wind
The three Rs of conservation are _____. (1 point)
reduce, reserve, resave
reuse, reclaim, return
reduce, reuse, recycle
redo, recycle, release
Explain how groundwater can become polluted.
Why is conservation important today?

is a chemical compound that forms tangled fibers in the cell walls of plants.
Stomata
Cambium
Cellulose
Cuticle
Of the following, which is NOT an example of a seed plant?
peanuts
peat moss
oranges
wheat
The most common type of plants on Earth is ____. (1 point)
angiosperms
gymnosperms
nonvascular plants
seedless vascular plants
The major function of leaves is to ____. (1 point)
make food
store food
transport
absorb nutrients
Which of the following eats consumers? (1 point)
carnivore
herbivore
bacteria
fungi
Which is a more complete model of feeding relationships? (1 point)
protein building
food map
food web
food chain
Which is a single individual from a population? (1 point)
organism
ecosystem
community
niche
Drought, fewer plants, and fewer nesting sites are examples of ____ factors. (1 point)
biotic
abiotic
limiting
carrying
Which of the following would help conserve natural resources? (1 point)
using solar panels
recycling plastic bottles
ridding the environment of harmful pollutants
all of the above
https://www.connexus.com/content/media/140991-9192006-120202-PM-39485939.gif
Arrow C in Figure 19-1 is best described as ____. (1 point)
solar radiation
carbon dioxide in the atmosphere
heat trapped near Earth’s surface
chlorofluorocarbons
Figure 19-1 represents the ____. (1 point)
photovoltaic cell
greenhouse effect
use of hydroelectric power
use of nuclear energy
Most air pollution results from ____. (1 point)
the burning of fossil fuels
nuclear energy use
volcanic eruptions
the evaporation of chemicals such as paints and dry-cleaning fluid
An advantage of nuclear energy is that ____. (1 point)
uranium is a nonrenewable resource
it does not contribute to air pollution
it makes use of the wind
it makes use of hot water from geysers
To produce hydroelectric power, _____ is needed. (1 point)
a fossil fuel
flowing water
sunlight
wind
The three Rs of conservation are _____. (1 point)
reduce, reserve, resave
reuse, reclaim, return
reduce, reuse, recycle
redo, recycle, release
Explain how groundwater can become polluted.
Why is conservation important today?

1. An example of a consumer is a _____
a. fern c. tree
b. grass d. rabbit
2. Photosynthesis, respiration and burning of fuels are all directly involved in the _____
a. water cycle c. carbon-oxygen cycle
b. nitrogen cycle d. phosphorus cycle
3. Materials that are recycled in the ecosystem include all the following except _____
a. nitrogen c. energy
b. oxygen d. carbon
4. In a food chain, herbivores are known as _____
a. secondary consumers c. producers
b. primary consumers d. carnivores
5. Fossil fuels are responsible for most _____
a. water pollution c. air pollution
b. soil pollution d. land pollution
6. Air pollution is caused by the following except _____
a. carbon dioxide c. nitrogen oxide
b. oxygen d. sulfur dioxide
7. Trapping of _____ causes the greenhouse effect
a. carbon dioxide c. nitrogen oxide
b. oxygen d. sulfur dioxide
8. In an ecosystem, _____ get the most energy
a. omnivores c. producers
b. decomposers d. herbivores
9. All are abiotic factors except _____
a. animals c. soil
b. sunlight d. air
10. A coral reef and a rainforest are examples of _____
a. niche c. community
b. habitat d. ecosystem

1. what is an ecological niche ? give an ex?
2. describe six characteristics shared by all ecosystem?
3. how does energy move in ecosystem?
4. why doesn’t trash decompose in a modern landfill?
5. what is the ozone layer ? where is it located? why is it important to life on earth?
6. what is the ozone hole? how hav government responded to the discovery of the ozone hole?
7.why is ozone in the stratosphere considered beneficial whereas ozone at ground level is not?
8.what is acid rain? what steps would have to be taken to solve the acid rain problem?
9. why is the greenhouse effect a current areas of scientific concern when the earth has had carbon dioxide ,methane, and water vapor for several billion years?