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Midterm spring 2020 Flashcards | StudBud
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Midterm spring 2020
Midterm spring 2020
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Questions
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Answers
1
Which layer of the atmosphere contains the ozone layer?
thermosphere
troposphere
mesosphere
stratosphere
2
Food webs show the energy transfer within ecosystems what is not show in a food web?
consumers
producers
Biotic factors and decomposers
Abiotic factors and decomposers
3
Why are nitrogen fixing bacteria so important in the nitrogen cycle?
They release nitrogen for plants to use
They convert nitrogen gas to nitrates
They consume all the nitrogen
They are not necessary
4
In order for life to exist on earth what must happen to the chemical elements?
The must be converted to solar energy
They must be converted to energy resources
They must cycle through the biotic and abiotic parts of the earth
They must be stored underground
5
What biome would a plant belong in if it had spines, water storage cells, and extensive root systems
Taiga
Tundra
Desert
Tropical Rainforest
6
What is the only process that removed carbon dioxide and releases oxygen
Photosynthesis
Respiration
Decomposition
Nitrification
7
Why are producers so important in food webs
They create their own energy
They eat the primary consumers
They convert solar energy into chemical energy
They are not necessary for the food web
8
How can volcanoes impact global climate
increase temperature due to massive amounts of lava releasing heat
lower temperature due to reflection of solar radiation
lower the temperature due to absorption of solar radiation
raise temperature due to reflection of solar radiation
9
What does the ozone layer protect the earth from?
solar radiation
greenhouse gases
solar flares
sun spots
10
In which layer of the atmosphere does weather occur
mesosphere
stratosphere
ionosphere
troposphere
11
All food chains begin with what type of organism?
producer
herbivore
carnivore
omnivore
12
What type of energy drives the water cycle
chemical
wind
mechanical
solar
13
What happens to biomass and biodiversity as succession progresses from pioneer species to climax community?
Both increase
Both decrease
Biomass increases and biodiversity decreases
Biomass decreases and biodiversity increases
14
What type of trees are most often found in the Taiga
conifers
palm trees
cacti
deciduous trees
15
Which organism would belong at the top of the energy pyramid?
sun
herbivore
carnivore
producers
16
Which gas is found in the highest concentration in the atmosphere
nitrogen
Carbon dioxide
Helium
water vapor
17
When global temperatures are high which of the following would occur?
A decrease in carbon dioxide levels in the atmosphere
An increase in carbon dioxide levels in the atmosphere
An increase in earthquakes
An increase in volcanic activity
18
Why are scavengers so important for ecosystems
they convert radiant energy into chemical energy
they eat producers and provide energy for secondary consumers
They decompose dead animals which recycles nutrients
they eat dead animals and recycle nutrients
19
In a food web which type of organism has the smallest population?
primary consumer
secondary consumer
producer
tertiary consumer
20
What is the pioneer species for primary succession?
shrubs
lichens and moss
grass
trees
21
What determines the major climate zones on the earth
elevation
Longitude
Ocean currents
latitude
