- the collection of living organisms and abiotic factors in the environment
- The ecological relationship between members of two species in which they both benefit is called
- A group of plants and animals that have adapted together to a certain region
- see last two pages of study guide to know how to graph and understand relationships between predators and prey and how it effects the environment
- The largest number of individuals in a population that the environment can support
- When natural disturbances happen in healthy ecosystems, the events and processes that occur during secondary succession often, but not always, reproduce the _____________ _____________ _____________. Patches of the ecosystem can be in different _____________ of secondary successions
- Viruses cannot ____________ so, they are not considered to be living organisms.
- When studying patterns of succession, look for _____________ and _____________.Remember that pioneer species help _____________.
- An environmental factor such as storms that affects population regardless of their density
- The ability of a species to cope with a variation in conditions is called its
- What 2 countries are home to 1/3 of the human population?
- Ecosystems change over time, especially after disturbances, as new species _____________ _____________, populations _____________, and some species _____________ _____________. Species diversity usually _____________.
- Succession happens usually because species _____________ their environment in ways that make it easier for species to _____________ for resources and survive. Species diversity usually _____________.
- when a disturbance affects an existing community but doesn't completely detroy it
- Pioneer species are named after rugged _____________ who first settled wilderness area. There are broad ranges of _____________ for environmental factors
- After human-caused disturbances, ecosystems may or may not _____________._____________ succession can take many paths, and produce different communities, depending on the _____________ of disturbance, the _____________ in which the disturbance occurs and other factors. _____________ and _____________ tropical rain forests can change the physical structure of soil
- a series of somewhat predictable events that occur in a community over time
- Most organisms depend directly or indirectly on
- ONLY ___________________ of the energy is transferred to the next level
- What is the most important abiotic factor in an ecosystem?