science b3

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  • Created by: tyndsei
  • Created on: 16-05-16 14:14
How is carbon recycled through the environment?
1. Combustion releases CO2 into the air - 2. Respiration releases CO2 into the air - 3. Photosynthesis removes CO2 from the air into sugars in the plant - 4. Eating passes carbon compounds in organisms along the food chain
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What does adaptation of living organisms to their environment increase?
The species chance of survival by making it more likely that individuals will survive to reproduce
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When is energy transferred between organisms in an ecosystem?
When organisms are eaten and when dead organisms and waste materials are fed on by decay organisms
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What is the importance of the role of microorganisms in the carbon cycle?
Carbon compounds from dead plants and animals are broken down by microorganisms in the soil
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What environmental changes may cause a species to become extinct?
1. The environmental conditions change beyond the species ability to adapt - 2. A new species is a competitor/predator - 3. Another species in its foo web becomes extinct
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What absorbs a small percentage of the Sun's energy and by which process?
Plants absorb a small percentage of the Sun's energy for the process of photosynthesis
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What happens to the energy plants absorb?
It's stored in the chemicals which make up the plants' cells
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How can climate and environmental change be measured?
Using living indicators including; phytoplankton, lichens and aquatic river organisms such as mayfly nympths
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What limits the length of food chains?
Energy is lost at each stage of the food chain via; heat, waste products and uneaten parts
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How can environmental change be measured?
Using non living indicators including; nitrate, temperature and carbon dioxide levels
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What is interdependence?
Organisms depending on other organisms
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What is there between different species of animals or plants in the same habitat?
Competition for resources; light, food, oxygen, carbon dioxide and water
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Where does the energy all organisms depend on come from?
Energy from the Sun
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What can cause a species to become extinct?
A change in the environment may cause a species to become extinct
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What are living organisms dependent on for their survival?
The environment and other species
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What is a species?
A group of organisms that can breed together to produce fertile offspring
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Other cards in this set

Card 2

Front

What does adaptation of living organisms to their environment increase?

Back

The species chance of survival by making it more likely that individuals will survive to reproduce

Card 3

Front

When is energy transferred between organisms in an ecosystem?

Back

Preview of the front of card 3

Card 4

Front

What is the importance of the role of microorganisms in the carbon cycle?

Back

Preview of the front of card 4

Card 5

Front

What environmental changes may cause a species to become extinct?

Back

Preview of the front of card 5
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