Which of the following changes to the environment are caused by humans? Check all that apply

Question 1

Which of the following changes to the environment are caused by humans? Check all that apply.

		erosion due to acid rain
		depletion of the ozone layer
		increased acid rain
		exotic species
		hurricanes
		global warming

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Question 2

What is an example of an abiotic component of an environment?

		insects
		plants
		bacteria
		soil
		all of the above
		none of the above

Question 3

What are large areas of land with similar climate, fauna and flora?

		biome
		community
		population
		biosphere

Question 4

What poses the greatest threat(s) to biodiversity?

		habitat loss
		overharvesting
		exotic species
		all of the above

Question 5

Organize the levels of the ecological hierarchy from small to largest.

– 1. 2. 3. 4. 5.

community

3
– 1. 2. 3. 4. 5.

biosphere

– 1. 2. 3. 4. 5.

organismal

1 – 1. 2. 3. 4. 5.

ecosytem

4
– 1. 2. 3. 4. 5.

population

Question 6

Scientists have discovered and named about 1.5 million eukaryotic species.

True

False

Question 7

Herbivory is an example of predation.

True

False

Question 8

The extinction of all organisms are tracked and recorded by humans.

True

False

Question 9

Heterotrophs produce their own food.

True

False

Question 10

Can species compete with different species in a community?

Yes

Question 11

Individuals can evolve over time.

True

False

Question 12

Does evolution explain the origin of life?

Yes

Question 13

Evolution is premeditated.

True

False

Question 14

Can bacteria evolve to be resistant to antibiotics?

Yes

Question 15

Match the evidence of evolution with the correct description.

– A. B. C. D. E. F.	skulls of early human ancestors
– A. B. C. D. E. F.	wings on flightless birds
– A. B. C. D. E. F.	similar appendages on various organisms
– A. B. C. D. E. F.	gill slits and tails during development
– A. B. C. D. E. F.	presence of similar organisms on different continents
– A. B. C. D. E. F.	universality in the genetic code and some proteins

A.	molecular biology
B.	biogeography
C.	fossils
D.	vestigial structures
E.	homologous structures
F.	comparative embryology

Question 16

What is survival of the fittest?

		microevolution
		genetic variation
		speciation
		natural selection

Question 17

Match the descriptions with the correct terrestrial biomes.

– A. B. C. D. E. F. G. H.	tropical wet forests
– A. B. C. D. E. F. G. H.	savannas
– A. B. C. D. E. F. G. H.	subtropical deserts
– A. B. C. D. E. F. G. H.	chaparrals
– A. B. C. D. E. F. G. H.	temperate grasslands
– A. B. C. D. E. F. G. H.	temperate forests
– A. B. C. D. E. F. G. H.	boreal forests
– A. B. C. D. E. F. G. H.	arctic tundra

A.	warm and wet with evergreen forests year-round
B.	lots of grasses with annual fluctuations in temperature
C.	long, cold winters that support evergreen coniferous trees
D.	dominated by shrubs with very dry summers
E.	grassland with scattered trees
F.	dry; can be hot or cold; low animal diversity
G.	deciduous trees with moderate rainfall and temperatures
H.	permafrost with low plants or lichens