unit 1 Flashcards
(25 cards)
Greenhouses
A greenhouse is a house made of glass that can be used to grow plants.
10% rule
The 10% Rule means that when energy is passed in an ecosystem from one trophic level to the next, only ten percent of the energy will be passed on.
mimicry
mimicry, in biology, phenomenon characterized by the superficial resemblance of two or more organisms that are not closely related taxonomically.
symbosis
Symbiosis is defined as a relationship or interaction between two different organisms that share similar habitat.
commensalism
a relationship between individuals of two species in which one species obtains food or other benefits from the other without either harming or benefiting the latter.
Parasitism
a relationship between the two living species in which one organism is benefitted at the expense of the other.
Relative abundance
the percent composition of an organism of a particular kind relative to the total number of organisms in the area.
keystone species
the percent composition of an organism of a particular kind relative to the total number of organisms in the area.
Biodiversity
the variety of all living things and their interactions
Equilibrium
the state in which all forces acting on the body are balanced with an equal and opposite force
Resistance
he capacity of bacteria to withstand the effects of a harmful chemical agent.
Resilience
the ability of a system to continue functioning amid and recover from a disturbance.
Food chain
, the sequence of transfers of matter and energy in the form of food from organism to organism.
Food web
, a complex network of interconnecting and overlapping food chains showing feeding relationships within a community.
Autotroph
an organism that can produce its own food using light, water, carbon dioxide, or other chemicals.
Trophic level
the position of an organism in the food chain
Biomagnification
the increase in concentration of a substance, e.g a pesticide, in the tissues of organisms at successively higher levels in a food chain.
Gross Primary Productivity
The total amount of energy acquired by primary producers in an ecosystem
Net primary productivity
the rate of accumulation of biomass or energy.
Biogeochemical cycle
CHNOPS
Hydrosphere
Percipitation
Carbon sink
