BIO Unit 10
food chain
A _____________ shows what animals or plants might eat what in a single direction.
phosphorus
A cycle that is between the environment and living organisms but not the atmosphere is the _____________ cycle.
food webs
An ecosystem's different eating relationships at all different levels are shown by _______.
estuaries
Aquatic ecosystems called ____________ are productive because they receive nutrients from rivers and plenty of sunlight in the shallow waters.
trophic pyramids
As levels of consumption change in an ecosystem, energy is lost. This is shown by __________________.
carbon dioxide
One of the gases responsible in the greenhouse effect is ____________.
primary consumers
Producers, organisms that perform photosynthesis, are consumed by __________________.
climax community
The final and stable community of an ecosystem is the ______________.
pioneer species
The first plants and animals to inhabit a newly available ecosystem are the ____________.
carrying capacity
The number of particular species that an ecosystem can support is the ___________.
niche
The unique role a species plays in its ecosystem that includes its physical home, the environmental factors it needs to survive, and all its interactions with other species in the same ecosystem is a(n) __________.
producers
Trophic pyramids have ______________ on their lowest level.
biotic
What factors of an ecosystem include all living and once-living organisms?
a species vital to an ecosystem
What is a keystone species?
all the organisms living together in a physical environment in a certain area
What is an ecosystem?
primary succession
When an ecosystem did not exist previously, _______________ takes place.
acid rain
When nitrogen oxides are released into the atmosphere from the burning of fossil fuels, it causes the production of ___________________.
a large area with a specific climate and certain types of plant and animal communities
Which of the following defines a biome?
It is a process of change during which species in a community are established or replaced.
Which of the following defines an ecological succession?
the numbers and variety of different species in a given area
Which of the following defines biodiversity?
