Science B3

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  • Created by: tyndsei
  • Created on: 16-05-16 13:52
How are organisms classified into groups?
According to similarities and differences in characteristics including physical features and DNA
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What does biodiversity include?
1. The number of different species - 2. The range of different types of organisms -3. The genetic variation within species
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What is happening to the rate of extinction and why is it happening?
It's increasing because of human activity
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What is sustainability?
Meeting the needs of the people of today without damaging the Earth for future generations
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How can sustainability be improved when using packaging materials?
Using renewable materials, using less energy and creating less pollution
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What did life on Earth evolve from?
From simple living things
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What is the evidence for evolution?
Fossil records and analysis of similarities and differences in the DNA of organisms
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What is biodiversity?
The variety of life on Earth
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Why is biodiversity important?
For the future development of food crops and medicines
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Why is large scale monoculture crop production not sustainable?
It does not maintain biodiversity
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What is one of the keys to sustainability?
Maintaining biodiversity to ensure the conservation of different species
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How are organisms classified at different levels?
The largest group contains many organisms with a small number of characteristics in common progressing to smallest group contains fewer organisms with more characteristics in common
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Why is Darwin's theory of evolution by natural selection a better scientific explanation than Lamarck's?
D's was the result of many observations and creative thought (fits with advances understanding genetics) whereas Lamarck's has has no evidence or mechanism for inheritance of acquired characteristics
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What can happen to mutated genes in sex cells?
Can be passed on to offspring and may occasionally produce new characteristics
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How long ago did life on Earth begin?
Approximately 3500 million years ago
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What is involved in producing a new species in the process of evolution?
The combined effects of mutations, environmental changes, natural selection and isolation
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Other cards in this set

Card 2

Front

What does biodiversity include?

Back

1. The number of different species - 2. The range of different types of organisms -3. The genetic variation within species

Card 3

Front

What is happening to the rate of extinction and why is it happening?

Back

Preview of the front of card 3

Card 4

Front

What is sustainability?

Back

Preview of the front of card 4

Card 5

Front

How can sustainability be improved when using packaging materials?

Back

Preview of the front of card 5
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