Title: Unit 15 Quiz
Course: HRT 125 Plants and Society > Section: HRT 125 Plants and Society

Q: Our biosphere is _____.
- our earth
- the land mass
- the 7 miles on top of the earth
- the top 12 miles of the earth
A: the top 12 miles of the earth

Q: Our ecosystem is composed of _____.
- communities
- populations
- organisms
- all of the above
A: all of the above

Q: Energy is transferred in a typical food chain _____.
- by producers eating consumers
- starting with the sun for most ecosystems
- with 50% passing through each level
- all of the above
A: starting with the sun for most ecosystems

Q: The giant panda of China is an example of a generalized niche.
- True
- False
A: False

Q: Rachal Carson showed that _____.
- chemical toxicity could be magnified as it passed up the food chain
- DDT was not an effective pesticide
- the United Nations can effectively control pesticide use
- birds died from eating mosquitoes
A: chemical toxicity could be magnified as it passed up the food chain

Q: The earth naturally recycles _____.
- carbon
- nitrogen
- water
- all of the above
A: all of the above

Q: Which is NOT a way that carbon dioxide can be recycled?
- pumping it into deep wells
- creating more El Niño years
- using algae-recycling plants
A: using algae-recycling plants

Q: During global warming _____.
- butterflies ranges will move south
- the acidity of the oceans will increase
- pine trees in the U.S. will shift south
- snail and coral populations will explode
A: the acidity of the oceans will increase

Q: An example of primary succession is abandoned farm land.
- True
- False
A: False

Q: Desert crops include _____.
- guayule, a source of non-latex allergy rubber
- jojoba, a source of oil for lubrication as well as cooking
- kenef, quick growing annual source of pulp for paper
- all of the above
A: all of the above

Q: Grasslands _____.
- can be cold like the tundra
- are found when the grass roots can grow to one foot
- can also be called a savanna when pine trees invade
- all of the above
A: can be cold like the tundra

Q: In the carbon cycle _____.
- coal, oil, and natural gas are the products of photosynthesis in the ancient past
- lightning strikes cause plants to release carbon into the ground and air where it is recycled
- plants use carbon to create CO2
- plants break down in 10 years to make oil and coal
A: plants use carbon to create CO2