1
Q
How many species are there alive today ?
A
10 million.
2
Q
Why is it good for a ecosystem to be biologically diverse?
A
When an ecosystem is biologically diverse, there is a higher chance that some organisms will survive in the ecosystems that arise.
3
Q
How many levels of biological diversity are there ?
A
The are two levels of biological diversity.
4
Q
What are the two different levels of biological diversity?
A
(1) species diversity, which describes the number of species & (2) genetic diversity, which refers to the amount of variation in inherited traits between individuals of the same species.
Biology 20
flashcards
Decks in class (41)
# Cards
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Chapter 3.3 The Nitrogen Cycle And The Phosphorus Cycle6
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Chapter 3.2 The Carbon Cycle And The Oxygen Cycle5
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Chapter 1.1 Equilibrium In The Biosphere11
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Chapter 1.2 Equilibrium Unbalanced9
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Chapter 2.1 Energy Transfer And Food Webs.11
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Chapter 2.2 Scientific Models3
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Chapter 3.1 The Hydrological Cycle7
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Chapter 4.1 Interactions Within Ecosystems5
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Chapter 4.2 Teresstrial & Aquatic Ecosystems17
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Chapter 5.4 The Making Of A Theory - Accounting For The Evidence.11
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Chapter 54
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Chapter 5.6 Sepciation And Evolution.5
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Chapter 4.5 Changes In Ecosystems.9
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Chapter 5.5 Sources Of Inherited Variation9
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Chaoter 5.3 Evidence Of Evolution From Biology.6
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Chater 5.2 Evidence Of A Changing Earth.4
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Chapter 5.1 Classification Of Organisms.11
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Chapter 4.3 Factors Affecting Ecosystems9
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Chapter 4.4 Limits On Population And Communitie In Ecosystems6
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Chapter 7.4 Anearobic Cellular Respiration7
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Chapter 6.1 Chloroplasts & Photosynthesis Pigments12
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Chpater 6.2 The Reactions of Photosynthesis15
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Chapter 7.1 The Importance of Cellular Respiration9
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Chapter 7.2 Glycolysis1
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Chapter 7.3 Aerobic Cellular Respiration5
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Chapter 8.1 Essential Nutrients23
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Chapter 12.1 Waste Excretion & Internal Equilibrium.20
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Chapter 8.2 Enzymes10
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Chapter 9.1 The Importance Of An Oxygen Delivery System12
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Chapter 9.2 Gas Exchange & Transport4
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Chapter 9.3 Regulation Of Breathing Movements.4
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Chapter 9.4 Muscles12
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Chapter 8.4 Digestion19
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Chapter 8.3 Ingestion10
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Chapter 11.1 Components Of Blood10
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Chapter 10.4 Capillary Fluid Exchange.7
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Chapter 11.2 The Body's Line Of Defence.13
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Chapter 11.3 Malfunctions Of The Immune System1
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Chapter 10.3 Regulations Of Blood Flow5
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Chapter 10.2 The Heart17
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Chapter 10.1 Blood Vessels9
