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Biology 1108 Questions with Answers (100% Correct
Answers)
Washington Answer: Where did the eruption of Mount Saint Helen take
place?
pyroclastic flow (plumice plan) Answer: during the eruption, this area got
up to 800ºF and afterwards was absent of all life, covered in 6ft of tephra,
and looked like a moonscape
tephra Answer: mix of tiny glass particles formed by the cooling of
magma droplets and pulverized rock
climate, disturbances, geology, hydrology, topography, soil type,
glaciation Answer: What are some examples of an abiotic environment?
species richness, biodiversity, species interactions, keystone species, and
invasive species Answer: What are some examples of biotic organisms?
temperate rainforest Answer: high species richness and high biodiversity
underground dens Answer: How did some mammals survive the
eruption?
© 2025 All rights reserved
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biological legacy Answer: carryover of living and dead, organic material
that was present beforehand
air, light, water, soil Answer: What are the 4 things plants need for
survival?
50-75% water Answer: What percentage of plants is made up of water?
25-50% Answer: What percentage of plants is made up of biomass?
Carbon 50%, Oxygen 42%, Hydrogen 1% Answer: What are the 3
structural elements?
structural elements Answer: CO2, H2O, and O2 are needed in large
quantities to make the basic biomass/structure of plants
1.5% Answer: What percentage of nitrogen makes up a plant's biomass?
DNA, ATP, Chlorophyll, Amino Acids Answer: Why do plants need
Nitrogen?
nitrogen fixation Answer: the process of converting nitrogen into nitrous
forms that plants can then access
© 2025 All rights reserved
Biology 1108 Questions with Answers (100% Correct
Answers)
Washington Answer: Where did the eruption of Mount Saint Helen take
place?
pyroclastic flow (plumice plan) Answer: during the eruption, this area got
up to 800ºF and afterwards was absent of all life, covered in 6ft of tephra,
and looked like a moonscape
tephra Answer: mix of tiny glass particles formed by the cooling of
magma droplets and pulverized rock
climate, disturbances, geology, hydrology, topography, soil type,
glaciation Answer: What are some examples of an abiotic environment?
species richness, biodiversity, species interactions, keystone species, and
invasive species Answer: What are some examples of biotic organisms?
temperate rainforest Answer: high species richness and high biodiversity
underground dens Answer: How did some mammals survive the
eruption?
© 2025 All rights reserved
, 2
biological legacy Answer: carryover of living and dead, organic material
that was present beforehand
air, light, water, soil Answer: What are the 4 things plants need for
survival?
50-75% water Answer: What percentage of plants is made up of water?
25-50% Answer: What percentage of plants is made up of biomass?
Carbon 50%, Oxygen 42%, Hydrogen 1% Answer: What are the 3
structural elements?
structural elements Answer: CO2, H2O, and O2 are needed in large
quantities to make the basic biomass/structure of plants
1.5% Answer: What percentage of nitrogen makes up a plant's biomass?
DNA, ATP, Chlorophyll, Amino Acids Answer: Why do plants need
Nitrogen?
nitrogen fixation Answer: the process of converting nitrogen into nitrous
forms that plants can then access
© 2025 All rights reserved
