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Terms in this set (48)
abiotic and biotic
Various combinations of "blank" and "blank" factors interact in different places around the world.
forms of life
The result is that conditions in one part of the world are suitable for supporting certain "blank" while others are not
ability to survive
factors that affect an organism's "blank" in its environment,
such as availability of water and food, predators, and temperature are called limiting factors
any biotic or abiotic factor that restricts the existence, numbers, reproduction, or distribution of organisms.
the ability of an organism to withstand fluctuations in biotic and abiotic environmental factors
Ecologists refer to the orderly, natural changes and species replacements that take place in the communities of an ecosystem as?
primary and secondary
Two types of succession?
The colonization of barren land by communities of organisms is called?
on land where there are no living organisms such as after a volcanic flow or after a glacier
Where does primary succession take place?
First species to take hold in an area like this is called?
Example of pioneer species is?
Combination of small organisms
What is a lichen?
more soil builds
When lichen die, what happens?
A mature community that undergoes little or no change and reaches equilbrium in species is?
Sequence of changes that take place after an existing community is severly disrupted such as a forest fire or plowing
it occurs in areas that previously contained life, and on land that still contains soil
Where does Secondary succession occur?
Secondary succession; already has soil
Which process is shorter?
Something that restricts the existence, numbers, reproduction, or distribution of organisms
Which is required for secondary succession to occur?
Community that undergos little or no change
large group of ecosystems that share the same type of climax community
terrestrial and aquatic
2 types of biomes?
marine biomes are shallow enough for "blank" to penetrate is called the "blank"
Never receives light
a coastalbody of water, partially surrounded by land, in which freshwater and salt water mix
Groups of ecosystems that reach similar climax communities are?
photic- sunlight aphotic- no sunlight
difference between photic and aphotic?
helps decay dead organisms and release nutrients
What is the importance of bacteria in a healthy ecosystem?
What branch of biology is developed from natural history?
a portion of the earth that supports living things
high in the atmosphere to the bottom of the oceans
Where does it extend from? biosphere
nonliving parts of an organism's environment
air currents, temperature, moisture, light, and soil
What are examples of abiotic factors?
all the living organisms that inhabit an environment
What are biotic factors?
group of organisms, all of the same species, which interbreed and live in the same area at the same time
made up of interacting populations in a certain area at a certain time
populations of plants and animals that interact with each other in a given area and with the abiotic components of that area
interracting populations in a biological community and the community's abiotic factors
terrestrial and aquatic
What are the two ecosystems?
both fresh and salt water forms
Aquatic ecosystems occur in?
Place where an organism lives
role or position a species has in its environment
What is a niche?
The relationship in which there is a close and permanent association between species?
one benefits while other is neither harmed or benefited
one benefits over others harm
Which is a biotic factor?
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