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Material Cycles

The document tests knowledge of environmental science concepts through a series of true/false statements. It covers topics like the composition of nucleic acids, types of algae, greenhouse gases, nutrient cycles, and the effects of eutrophication and acid rain. The reader must choose the correct option - A, B, C or D - based on whether statement 1 and 2 are both true, 1 is true and 2 is false, 1 is false and 2 is true, or 1 and 2 are both false.

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110 views3 pages

Material Cycles

The document tests knowledge of environmental science concepts through a series of true/false statements. It covers topics like the composition of nucleic acids, types of algae, greenhouse gases, nutrient cycles, and the effects of eutrophication and acid rain. The reader must choose the correct option - A, B, C or D - based on whether statement 1 and 2 are both true, 1 is true and 2 is false, 1 is false and 2 is true, or 1 and 2 are both false.

Uploaded by

ENID
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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ENVIRONMENTAL SCIENCE

Choose A=if statement 1 and statement 2 are both true

B=if statement 1 is true but statement 2 is false

C=if statement 1 is false but statement 2 is true

D=if statement 1 and statement 2 are both false

1. Nucleic acids contain TRUE B


phosphates.

2. Another name of blue FALSE


green algae, a nitrogen
fixing bacteria, is
cyanobacteria.

1. Ammonia is a form of FALSE D


nitrogen that can be
assimilated by plants.

2. An increase in FALSE
phytoplankton biomass
increase both turbidity
and dissolved oxygen
level.

1. Carbon enters the FALSE D


biosphere through the
reaction of carbon
monoxide with water.

2. Dimethyl sulfate is a FALSE


bacterial by-product

1. Carbon dioxide is an TRUE B


example of a greenhouse
gas.
2. Nitrogen is an essential FALSE
component of proteins,
lipids, and nucleic acids.
1. Water cycle, carbon, and FALSE C
phosphorus cycle are gas
cycles.
2. There are about 85 TRUE
species of aquatic plants
that can cause harmful
algal blooms.
1. Animal respiration and FALSE D
photosynthesis increase
the concentration of
carbon dioxide in the
atmosphere.
2. Phosphorus cycle is a FALSE
slow cycle because it
takes a long time to
erode rocks.
1. Acid rain involves the TRUE A
deposition of acid
precipitation with pH less
than or equal to 5.2
2. H2H is a poisonous gas TRUE
that comes active
volcanoes.
1. Potassium, iron, and FALSE C
copper are
macronutrients.
2. Nitrogen is the most TRUE
abundant gas in the
atmosphere.
1. Eutrophication eventually TRUE A
leads to the death or loss
of a water body.
2. Biological fixation of TRUE
nitrogen comprises 90%
of all nitrogen fixation.
1. Ammonia, a form of TRUE A
nitrogen that can be
absorbed by plants, is
produced by lightning.
2. Infiltration is a term that TRUE
refers to the movement
of water from the topsoil
subsurface water level.
Eutrophication Increase in suspended nutrients
Dinoflagellates Harmful Algae
Macronutrient Calcium
Anoxia Loss of Oxygen
Micronutrient Copper
Acid rain Sulfur Dioxide and water
Hydrologic Cycle Water cycle
Biogeochemical Cycle Nutrient Cycle
Transpiration Loss of water
Ammonification Release of Ammonia

Boron Is a micronutrient needed specifically by green


plants
Respiration Is the name of the process that converts sugars
to carbon dioxide and water
Sink Is a term that refers to long term storage places
for nutrients or materials.
Nitrate Is the name of the form of nitrogen that can be
assimilated by plants.
Molybdenum Is a micronutrient needed specifically by nitrogen
fixing bacteria.
Guano Is a term that refers to the excrement of bats.
Sulfate Is the name of the form of sulfur that can be
assimilated by plants.
Sedimentary Is a general type of nutrient cycle other than
atmospheric cycle.
Rhizobium Is a species of bacteria that is responsible for
nitrogen fixation.
Photosynthesis Is the name of the process that converts carbon
dioxide to sugars in plants.

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