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science unit test 13
unit test in science
| Question | Answer |
|---|---|
| a living thing in its environment or once alive | biotic factor |
| a non living thing | abiotic factor |
| aliens to an ecosystem | nonnative species |
| what does nonnative species usually do to an ecosystem | upset the balance |
| variation ofliving things within ecosystem | biodiversity |
| what anorganism does to survive | niche |
| what does a nutria do to harm louisiana | destroys vegatation and burrows into the soil |
| anything that restricts the individual organisms in a population or in a community and could cause a chain reaction | limiting factor |
| largest number of individuals of one species that an ecosystem can support over time | carrying capacity |
| what will happen if the carrying capacity was exceeded | competion or not enough resources |
| what do living organisms do to survive in environments | adapt |
| the way living organisms cope with their environments | adaptation |
| adaptations that are physical | structural adaptations |
| adaptatuions that are changes to help survive | behavioral |
| what can specie variations be used for | identifying |
| what can specie variation increase | survivla |
| what are some changes that happen from environment | hurican, flooding, and erosion |
| what are some changes that occur from humans | pollution, land clearin, poaching |
| what causes higher pollution in waterways | droughts |
| what causes higher pollution on ground | flooding |
| what can we do to save organisms and resources | recycle, keeping air clean, |
| what are the four main reasons that we have started to help save organisms and resources | clean air acts, clean water acts, endangered species act, and banning of DDT |