| A | B |
|---|
| The living things that help shape an ecosystem are known as _________. | biotic factors |
| The non-living things that help shape an ecosystem are known as _______. | abiotic factors |
| An organism's ______ is where it lives and includes both biotic and abiotic factors. | habitat |
| An organism's ____ is kind of like it's job, and includes the way in which an organism eats, finds shelter, and reproduces as well as the physical conditions required by the organism to survive. | niche, 
|
| Two different species ______ share the same niche in the same habitat. | can't |
| Any necessity for life, such as water, nutrients, light, food, and space, are referred to as a _____. | resource |
| ______ occurs when organisms of the same or different species attempt to use an ecological resource in the same place at the same time. | Competition |
| The type of interaction where one animal captures and eats another animal is known as _____. | predation |
| The type of relationship in which two different species of organisms live closely together is called ____. | symbiosis,
|
| Name the three types of symbiotic relationships.,
| mutualism, commensalism, and parasitism |
| The type of symbiotic relationship in which both species benefit is called ____.,
| mutualism,
|
| The type of symbiotic relationship in which one species benefits while the other species is neither helped nor harmed is called ___.,
| commensalism,
|
| The type of symbiotic relationship in which one species benefits at the expense of the other is called ____.,
| parasitism,
|
| Fleas, ticks, lice and tapeworms are examples of ____. | parasites,
|
| The organism that a parasite lives on or in is called the ____. | host |
| The statement that "No two species can occupy the exact same niche in the same area at the same time" is called the _________ principle | competitive exclusion principle |
| The type of interaction between herbivores and plants is called _____. | herbivory |
| Smaller habitats within a larger habitat that often have different biotic and abiotic factors from the habitat around them, including their own microclimate are called _____ or _______. | microhabitats, microenvironment |
| The type of habitat that insects living under the bark of a dead tree could best be referred to as a ____-habitat. | micro |
| The type of soil, the average temperature, and the amount of sunlight that are characteristic of a habitat would be known as ____ factors that affect the environment. | abiotic |
| The type of organisms found in a certain habitat would be known as ____ factors that affect the environment. | biotic |
| Species that can survive in a wide range of conditions would be said to have a wide range _______. | tolerance |
| Species can serve as "indicator species" for healthy environments if they have low ______ for pollution or environmental degradation. | tolerance (for instance, trout are indicator species for clean water because they can't survive well in polluted water. If you find them in a stream, it's probably pretty clean water. Carp and catfish on the other hand have high tolerance for water pollution, so they wouldn't be considered to be "indicator species.") |
A graph like the one shown is typical of a _______ relationship.,  | predator-prey,  |
| A species that may not be large in number, but has a large effect on an ecosystem would be called a(n) _______ species. | keystone |
| ______ of a keystone species would cause big changes in an ecosystem. | Removal (for instance, the removal wolves from many areas in the U.S. led to big changes with more herbivores surviving. That in turn changed the types of plant life that could found in the area) |
