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What is the name of the scientist who studies how biotic and abiotic factors interact within an ecosystem?
an ecologist
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_______________________ is the process when individuals are better adapted to the environment are more likely to survive and reproduce than others?
natural selection
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What is an organism's particular role, or how it makes its living called?
a niche
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If two species try to occupy the same niche, they will compete directly against each other, and one species eventually will _______ off.
die
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The behaviors and physical characteristics of a species that allow them to live successfully in their environment are called__________________________.
adaptations
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What do scientists call a close relationship between species that benefits at least one of the species?
symbiosis
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What do scientists call the struggle between organisms for limited resources in habitat called?
competition
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What is the interaction in which one organism kills and eats another called?
predation
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An organism that is killed is called?
prey
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What is the organism that does the killing, or eating of another organism, called?
predator
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What interaction involves one organism living inside another organism and harming it?
parasitism
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The organism that a parasite lives in or on is called the __________.
host
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An organism that benefits from living on or in a host in parasitism is called a _______________.
parasite
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_______________is a symbiotic relationship in which both species benefit.
mutualism
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What do scientists call a relationship in which one species benefits and the other other species is neither helped or harmed?
commensalism
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Escherichia coli lives inside the intestines of most mammals. This bacteria breaks down food that a mammal cannot digest. They benefit by receiving food and a place to live. The mammal benefits from having help digesting food and provides vitamin _____ , a nutrient that is needed to help blood clot.
K
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What are the three types of interactions among organisms?
- 1. competition
- 2. predation
- 3. symbiosis
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What are three different symbiotic relationships?
- 1. mutualism
- 2. commensalism
- 3. parasitism
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How does camouflage, a basic defense strategy, help organism's avoid becoming prey?
allow organism to resemble their surroundings
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What is mimicry? How does it help organisms survive?
When an organism mimics another organism to help keep predators at a distance
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Why would an organism use warning coloring as a defense strategy?
Warning coloring tricks predetors into thinking they are poisonous so they do not become prey.
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Why would an organism use protective coverings as a defense strategy?
Predetors get the message they should not touch the prey. Hard exterior bodies or spines keep predetors at a healthy distance.
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What are some adaptations used by organisms for protective/defense purposes?
claws, teeth, spines, stinger, speed, sounds, beaks, smell, wings, eyes that see at night, poison, etc.
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How do oganism's adaptations help them survive?
Adaptations enable it to fill a unique role in an ecosystem. Organisms eat particualr types of food, obtaining its food in unique ways, and using other biotic and abiotic factors to meet its needs.
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