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Populations
Communities
Ecosystems
Biosphere
Earth
100
the maximum number of individuals of a population that a given environment can sustain indefinitely?
What is carrying capacity?
100
a place where a species normally lives
What is a habitat?
100
an interconnected group of food chains
What is a food web?
100
conversion of grassland to desertlike conditions?
What is desertification?
100
most of Earth's water is found here
What is the ocean?
200
the group name of the pre-reproductive and reproductive individuals of society
What is reproductive base?
200
a type of species interaction that helps one species and does not affect the other?
What is commensalism?
200
process of concentrating chemical substances in the tissues of organisms at higher trophic levels
What is biological magnification?
200
frozen layer 500 meters thick in tundra
What is permafrost?
200
the greatest species diversity is found here
Where is the tropics?
300
sampling areas of same size and shape used by scientists to count sessile organisms
What are quadrats?
300
subdividing of an essential resource to reduce the competition among species that require it
What is resource partitioning?
300
where most nitrogen is found on Earth
What is the atmosphere?
300
evergreen trees with seed-bearing cones
What are conifers?
300
process performed by plants created Earth's current atmosphere
What is photosynthesis?
400
type of fish was used in our book as an example of predators affecting the evolution of prey?
What are guppies?
400
an evolutionary adaptation by prey when they come to resemble another more well-defended species
What is mimicry?
400
process of nutrient enrichment of an ecosystem that is low in nutrients called
What is eutrophication?
400
zones of a shoreline
What are littoral zones?
400
water in soil and aquifers
What is groundwater?
500
type of survivorship curve do humans fall into
What is type I?
500
insects that lay eggs in other insects to allow their larva to eat that insect from the inside out
What are parasitoids?
500
the greenhouse gas emitted by bacteria in the gut of cattle
What is methane?
500
enclosed coastal region where sea water and fresh water mix
What is an estuary?
500
Earth's largest city
What is Mexico City?