A relationship between two organisms of different species where one benefits and the other is harmed

A relationship between two organisms in which one organism benefits and the other is unaffected

Human impacts on environment

Building dams, mining, logging, growing crops, building roads, building cities...

changes in environmental impact

Natives: little impact (moved with food source and used buffalo entirely). Early settlers: medium impact (small farms; didn't follow food source). Today: large impact (large farms, more wastes and more/different types of transportation, bigger cities)

Something we can't live without

An item that we desire but that is not essential to survival

Resources are renewed as quickly as they are used, and all wastes are absorbed

the impact of a person or community on the environment, expressed as the amount of land required to sustain their use of natural resources.

to use less of something, or decrease the amount of garbage you produce

to turn materials into something else usable

Raw materials supplied by nature (e.g. wood, water, minerals)

An organism's particular role or roles in an ecosystem. This includes what it eats, where it lives, how it interacts with other organisms

Organisms that make their own food using energy from the sun

An organism that obtains energy and nutrients by feeding on other organisms or their remains.

A consumer that eats only plants.

A consumer that eats only animals.

A consumer that eats both plants and animals

An animal that hunts other animals for food

An organism that is killed and eaten by another organism

A model that shows how energy flows through an ecosystem from one organism to another.

Network of complex interactions formed by interconnected food chains.

The passage of energy through the components of an ecosystem.

The total mass of organisms in an ecosystem or trophic level.

Representation of the number of individual organisms in each trophic level of an ecosystem.

An organism that feeds on the dead bodies of other organisms.

Organisms that break down the dead remains of other organisms, absorbing some of the nutrients into their own cells.

Release of harmful materials into the environment at such a fast rate that it cannot be broken down, stored, or recycled in the environment.

Rain containing acids that form when high levels of sulfur and nitrogen are found in the air.

The change from a gas/water vapor to a liquid.

The change of a substance from a liquid to a gas.

The increase in chemical concentration in animal tissues as the chemical moves up the food chain.

The continual movement of water among Earth's atmosphere, oceans, and land surface through evaporation, condensation, and precipitation.

Any form of water that falls from clouds and reaches Earth's surface (rain, snow, sleet...).

loss of water from a plant through its leaves

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration.

substances that cause pollution

the gas that humans and animals breathe in

process by which plants and some other organisms take carbon dioxide and water from the air and ground, and convert them to oxygen and high-energy carbohydrates

an element that is necessary for all life. It constantly cycles through an ecosystem, entering the air by burning of fossil fuels or organic matter and by respiration, and being taken back out of the air through photosynthesis, absorption into water bodies, etc.

the process by which new species gradually replace old species in an ecosystem

Science 7 Review Flashcards

Student preview

100 questions

Show all answers

1.

FLASHCARD QUESTION

Front

ecologist

Back

Studies relationships between living organisms and their environment

2.

FLASHCARD QUESTION

Front

ecology

Back

The study of how living things interact with each other and their environment

3.

FLASHCARD QUESTION

Front

adapted

Back

Well-suited to its purpose or environment

4.

FLASHCARD QUESTION

Front

adaptation

Back

An inherited characteristic that helps an organism survive and reproduce

5.

FLASHCARD QUESTION

Front

ecosystem

Back

A system formed by the interaction of a community of organisms with their physical environment

6.

FLASHCARD QUESTION

Front

symbiosis

Back

When two species live closely together in a relationship that lasts over a period of time

7.

FLASHCARD QUESTION

Front

mutualism

Back

A relationship between two species in which both species benefit

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