B3

OCR 21st Century Science Revision Crossword B3

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  • Created by: zoe
  • Created on: 12-05-13 14:49
Similar organisms that are capable of breeding together to create fertile offspring...
Species
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Species can become extinct because of increase...
Competition
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Species can become extinct because of new p........
Predators
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Species can become extinct because of new d...
Diseases
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These show the feeding relationships between organisms...
Food Chains
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________ is how all living things are dependent on each other.
Interdependence
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Energy is passed ____ the food chain.
Up
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All living things ultimately get their energy from the.....
Sun
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An area containing a self-sustained community of organisms and their physical surroundings...
Ecosystem
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Self feeders are also known as...
Autotrophs
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Organisms that feed off other organisms...
Heterotrophs
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Heterotrophs that eat plants are called...
Herbivores
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Heterotrophs that eat other animals are called...
Carnivores
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Herbivores are ____________ consumers.
Primary
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Carnivores are __________ consumers.
Secondary
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Secondary consumers are also known as ________ consumers.
Tertiary
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Detrivores and _______ feed on dead organisms.
Decomposers
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Nitrogen in the air can be removed by...
Nitrogen Fixing Bacteria
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Nitrates can be broken down into nitrogen by bacteria in the soil in a process called...
Denitrification
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Data can be obtained by...
Living Organisms
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Life on earth began about_______ ___________ years ago.
3500 Million
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The very first living things developed from...
Simple Molecules
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___________ __________ created the theory of evolution.
Charles Darwin
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The slow, continual change over many generations is called...
Evolution
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The main cause of extinction is...
Human Activity
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_____ ________ is when animals with certain characteristics are chosen to mate to create a new species.
Selective Breeding
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the variety of life that exists on earth is called...
Biodiversity
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A group of living things with only a few things in common classified together...
Kingdom
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Being continued for a long time with minimal long term effect on the environment...
Sustainability
29 of 30
A material that decomposes naturally...
Biodegradeable
30 of 30

Other cards in this set

Card 2

Front

Species can become extinct because of increase...

Back

Competition

Card 3

Front

Species can become extinct because of new p........

Back

Preview of the front of card 3

Card 4

Front

Species can become extinct because of new d...

Back

Preview of the front of card 4

Card 5

Front

These show the feeding relationships between organisms...

Back

Preview of the front of card 5
View more cards

Comments

lisa linsdell

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A nice crossword to help support revision of OCR B3 Module. Some higher level questions included.

Hannah Ess

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this is b2 not b3

lionsgate52

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nah

this is good bruh

keep up! ples help meh i need help for school

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