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Science
Earth Science
Environmental Science
Ecosystems Vocabulary 1
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Gravity
Terms in this set (36)
Abiotic
Nonliving (rock, soil, water, air)
Autotroph/Producer
An organism which can make its own food
Biotic
Living
Carnivore
An organism that eats meat/animals
Carrying Capacity
The number of organisms an area can support with its resources
Coexistence
living side by side without competing for the same food or shelter
Commensalism
a relationship where one organism benefits and the other is neither helped nor harmed
community
all the living organisms of an area/habitat
competition
a relationship where two or more species depend on the same food source or resource
cooperative
working together
decomposer
an organism which breaks down dead organisms
decomposition
the breaking down of dead organisms into organic matter which returns to the soil
ecologist
a scientist who studies relationships between biotic and abiotic factors in the environment and the impact of humans
ecology
the study of the relationships among organisms and their environment
ecosystem
a community of living things and the nonliving things of their environment
energy pyramid
a graphic representation of the movement of energy from producers to primary consumers, to secondary consumers
energy transfer
the movement of energy from organism to organism through feeding relationships
habitat
the natural home or environment of an organism, from which it obtains food, shelter, etc. to meet its needs
herbivore
A consumer that eats only plants.
heterotroph/consumer
an organism which acquires energy by eating other organisms
host
the organism that a parasite lives in or on
mutualism
a relationship that is beneficial/helpful to all of the organisms involved
niche
the role or job of an organism in its environment
omnivore
an organism which eats both plants and animals
parasite
an organism living in or on another organism in a way that is harmful to the host
parasitism
a relationship in which an organism lives in or on a host in a manner that harms the host
photosynthesis
a process by which plants use sunlight to make sugar from carbon dioxide and water
population
all of the organisms of a particular species in an area
predator
an organism which hunts and kills to obtain food
prey
an organism which is hunted and killed to be food for a predator
primary consumer
a consumer which eats plants/producers
respiration
a process by which consumers convert sugar to energy and release carbon dioxide and water
scavenger
an organism which feeds on the remains of dead organisms
secondary consumer
an organism which eats organisms that eat producers
symbiosis
a close relationship between organisms which benefits at least one of the organisms
Tertiary consumer
a consumer which eats organisms which eat other organisms which eat producers
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Verified questions
ENVIRONMENTAL SCIENCE
According to EPA data, emissions of nitrogen oxides in the United States in 2008 totaled 16.3 million tons. Nitrogen oxides come from many sources, but 9.5 million tons come from motor vehicles. In 2008, the population of the United States was about 304.1 million people. (1 ton = 2000 pounds) How might a driver reduce his or her driving by one half?
ENVIRONMENTAL SCIENCE
The gross primary productivity of an ecosystem is (a) the total amount of biomass. (b) the total energy captured by photosynthesis. (c) the energy captured after accounting for respiration. (d) the energy available to primary consumers. (e) the biomass of the producers.
ENVIRONMENTAL SCIENCE
Refer to the following table. $$ \begin{matrix} \text{Mode} & \text{MJ per passenger-kilometer}\\ \hline \text{Air} & \text{2.1}\\ \text{Passenger car (driver alone)} & \text{3.6}\\ \text{Motorcycle} & \text{1.1}\\ \text{Train (Amtrak)} & \text{1.1}\\ \text{Bus} & \text{1.7}\\ \end{matrix} $$ Nicole wants to take a trip to visit one of her friends. She can fly 1,200 kilometers to visit Aaria, drive 500 kilometers to visit Sofia, take a bus 1000 kilometers to visit Callum or take a train 1,500 kilometers to visit Saaid. Use the table to determine which trip will result in the smallest amount of energy expended. (a) Aaria (b) Sofia (c) Callum (d) Saaid
ENVIRONMENTAL SCIENCE
Which of the following factors would most likely contribute to an increase in large, destructive forest fires? a. an increase in prescribed burns b. a decrease in federal funding to fight forest fires in national parks c. a decrease in campgrounds d. long-term suppression of all fires
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