Here are the key relationships between the groups of words: - Pyramid of numbers and Pyramid of biomass describe different types of ecological pyramids. - Producer, predator, and prey describe trophic levels in a food chain or food web. - Genetic modification and selective breeding describe different methods for changing organisms - genetic modification is artificial while selective breeding uses natural processes. - Organic and intensive describe different types of farming - organic avoids artificial chemicals while intensive farming aims for high production. - Inter-species and intra-species describe levels of competition - inter-species is between different species, intra-species is within the same species. - Evolution and natural selection are closely related concepts

1. ENVIRONMENT
REVISION
Name:
Class:
Date:

2. Pg 10-11 Competing for resources
Pick a habitat-woodlands, seaside, Savannah. Draw and describe one type of inter-
species competition and one type of intra-species competition.
Pg 12-13 Sampling and estimating populations
Outline, step by step, how you would count the number of daises in a field. Why
wouldn't you just count all of the daises in a field?
Pg 16 -17 Chains, Webs and Pyramids
Write 2 food chains from this food
web.
NAME A
Producer:
Primary Consumer:
Secondary Consumer:
Herbivore:
Carnivore:
Predator and Prey:

3. Draw a pyramid of numbers and a pyramid of biomass for the following information:
Organism Number of Average biomass (dry) mass Total Biomass of all
individuals of one individual (grams) individuals (grams)
Ladybird 10 1 10
Aphid 1000 0.1 100
Rose Bush 1 1000 1000
Pyramid of NUMBERS
Pyramid of BIOMASS
Pg 18 – 19 Wheat vs Meat
The energy arrow shows what happens to the energy in the rosebush that an aphid
eats.
Some energy is used by
the aphid for
Energy in
Only 10% of the energy is used for
.
Some energy passes out of
the aphid as
.

4. Pg 20 – 21 Going Organic
Circle the words which relate to organic farming:
factory farms Artificial fertilizers
pesticide manure
biological control battery cages
Intensive farming crop rotation
chemical pesticides compost
Pg 22 – 23 Changing organisms
Over thousands of years, pigs have been bred from wild boars.
Name two characteristics that have been selected for in breeding modern pigs.
1) __________________________________________________________________
2) __________________________________________________________________
Decide if the changes can be made by selective breeding, or if they are changes
that can be made by genetic modification.
Wheat that produces bigger seeds Banana plants that produce a vaccine in
their fruit
Rabbits that glow in the dark Wheat that cannot be killed by a particular
wheat killer
Cows that produce more milk Dogs that can run faster
Pg 24 – 25 Natural Selection
Match Darwin's Observations to his Deductions
Observation Deduction
Organisms over-produce, but The ones who are best adapted
populations remain fairly to their environment are more
constant likely to survive and breed
All organisms show variation Well-adapted parents may pass
on some useful characteristics
Some characteristics are Some offspring must die
inherited

5. Pg 26-27 Evidence for Evolutionary
Name 2 similarities between the Lobe-finned fish and Early amphibian:
1) __________________________________________________________________
2) __________________________________________________________________
Name 2 differences between the Lobe-finned fish and Early amphibian:
1) __________________________________________________________________
2) __________________________________________________________________
Draw 3-4 steps of how fossils are formed.
Pg 32 Environment Keywords

6. How are these groups of words related?
Pyramid of numbers Pyramid of Biomass
Producer Predator Prey
Genetic Modification
Selective breeding
Organic
Intensive
Evolution Natural Selection
Inter-species
Intra-Species
Food Chain Food Web