Scientific study of interactions among organisms and between organisms and their environment, or surroundings

Level 2 of organization- Population

Groups of individuals that belong to the same species and live in the same area

Level 3 of Organization-Community

Groups of different populations that live together n a defined area

Level 4 of Organization-Ecosystem

Collection of all the organisms that live in a particular place together with their non-living (physical) environment

Level 5 of Organization-Biome

A group of ecosystems that have the same climate and dominant communities

Level 6 of Organization-Biosphere

Contains the combined portions of the planet in which all of life exists, including land, water, and air or atmosphere

Contains the combined portions of the planet in which all of life exists, including land, water, and air or atmoshpere

A group of organisms so similar to one another that they can breed and produce fertile offspring

Use energy from the environment to fuel the assembly of simple inorganic compounds into complex organic molecules

When autotrophs use light energy from the sun to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches

When organisms use chemical energy to produce carbohydrates

Organisms that rely on other organisms for their energy and food supply

Eats plants and animal remains and other dead matter, collectively called detritus

A series of steps in which organisms transfer energy by eating and being eaten

When the feeding relationships among the various organisms in an ecosystem form a network of complex interactions. Links all the food chains in an ecosystem together

The series of processes by which living cells reproduce through the oxidation of organic substances.

Each step in a food chain or food web.

Shows the relative amounts of energy available at each trophic level.

Elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another through these cycles.

When an ecosystem is limited by a single nutrient that is scarce or cycles very slowly

An immediate increase in the amount of algae and other producers. The result of when an aquatic ecosystem receives a large input of a limiting nutrient.

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Biology- Chapter 3

Biology Chapter 3 Vocab Words

Question	Answer
Ecology	Scientific study of interactions among organisms and between organisms and their environment, or surroundings
Level 1 of organization-Organism	Individual living thing
Level 2 of organization- Population	Groups of individuals that belong to the same species and live in the same area
Level 3 of Organization-Community	Groups of different populations that live together n a defined area
Level 4 of Organization-Ecosystem	Collection of all the organisms that live in a particular place together with their non-living (physical) environment
Level 5 of Organization-Biome	A group of ecosystems that have the same climate and dominant communities
Level 6 of Organization-Biosphere	Contains the combined portions of the planet in which all of life exists, including land, water, and air or atmosphere
Biome	Contains the combined portions of the planet in which all of life exists, including land, water, and air or atmoshpere
Species	A group of organisms so similar to one another that they can breed and produce fertile offspring
Autotroph/producer	Use energy from the environment to fuel the assembly of simple inorganic compounds into complex organic molecules
Photosynthesis	When autotrophs use light energy from the sun to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches
Chemosynthesis	When organisms use chemical energy to produce carbohydrates
Heterotroph/consumer	Organisms that rely on other organisms for their energy and food supply
Herbivore	Eat plants
Carnivore	Eats animals
Omnivore	Eats plants and animals
Detrivore	Eats plants and animal remains and other dead matter, collectively called detritus
Decomposer	Breaks down organic matter
Food Chain	A series of steps in which organisms transfer energy by eating and being eaten
Food web	When the feeding relationships among the various organisms in an ecosystem form a network of complex interactions. Links all the food chains in an ecosystem together
Cellular respiration	The series of processes by which living cells reproduce through the oxidation of organic substances.
Trophic level	Each step in a food chain or food web.
Ecological pyramid	Shows the relative amounts of energy available at each trophic level.
Biogeochemical cycle	Elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another through these cycles.
Limiting nutrient	When an ecosystem is limited by a single nutrient that is scarce or cycles very slowly
Algal bloom	An immediate increase in the amount of algae and other producers. The result of when an aquatic ecosystem receives a large input of a limiting nutrient.

Created by: 15_KCrawford

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