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ECOSYSTEMS
ECOSYSTEMS
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Test review for ecosystems (APEs)
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
natural disasters and human activity can lead to
loss of resilience in ecosystems
primary succession
stability of ecosystems
secondary succession
2
Which species would be most vulnerable to human impact?
invasive species
producers
a top predator
keystone species
3
largest reservoir of carbon is in
the atmosphere
freshwater systems
producers
the ocean
4
TRUE or FALSE: Matter is transferred; Energy is recycled
TRUE
FALSE
5
the greatest species richness is found in
birds
flowering plants
mammals
insects
6
the biggest threat to loss of biodiversity
invasive disease organisms
habitat destruction
global climate change
overharvesting of valuable biodiversity
7
the raw material for natural selection
global change
genetic variation
biodiversity
speciation
8
species that faces little competition & has a high ability to adapt to wide range of conditions
endemic
generalist
predators
specialist
9
% of species that are thought to have existed by are now extinct
10%
88%
50%
99%
10
biggest impact on the nitrogen cycle
leaching of ammonia from oceans to soil
burning of fossil fuels; more NOx in atmopshere
use of fertilizers; runoff to aquatic systems.. "dead zones"
mining that filters nitrates from deep in soil to atmosphere
11
photosynthesis stores biomass
gross primary productivity
net primary productivity
ecological pyramids
respiration
12
Which ecosystem is the most productive?
temperate forests
open ocean
swamps & marshlands
desert
13
the balance between which 2 processes contributes to the Earth's great biodiversity?
immigration & emigration
speciation & extinction
immigration & extinction
speciation & immigration
14
key cause of leaching phosphates into lower soil regions where plants cannot access them is
infiltration of rainfall
burning of fossil fuels
surface mining
overuse of pesticides & fertilizers
15
sunlight, water quality, and soil pH
ecosystem
abiotic factors
biotic factors
ecological niche
