What is gross primary production (GPP) ?
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The chemical energy stored in plant biomass, in a given area or volume, per
unit time
What are the two ways in which biomass can be measured?
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, Mass of carbon in a given area, per unit time
Dry mass of tissue in a given area, per unit time
Why is dry mass used instead of wet mass, as a measure of biomass ?
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The water content of living tissue varies
Why does the efficiency of energy transfer increase up a food chain?
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Consumers contain less indigestible matter than plants
How do farmers simplify food webs?
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Get rid of pests
1. Insecticides
2. Herbicides
3. Parasites/pathogenic bacteria or viruses
Give this one a try later!
The chemical energy stored in plant biomass, in a given area or volume, per
unit time
What are the two ways in which biomass can be measured?
Give this one a try later!
, Mass of carbon in a given area, per unit time
Dry mass of tissue in a given area, per unit time
Why is dry mass used instead of wet mass, as a measure of biomass ?
Give this one a try later!
The water content of living tissue varies
Why does the efficiency of energy transfer increase up a food chain?
Give this one a try later!
Consumers contain less indigestible matter than plants
How do farmers simplify food webs?
Give this one a try later!
Get rid of pests
1. Insecticides
2. Herbicides
3. Parasites/pathogenic bacteria or viruses
