Paper 1: Section B - The Living World Flashcards
Ecosystems, tropical rainforests, cold environments
What are global scale ecosystems called?
Biomes
Name a producer in a small pond?
Algae
Name a consumer in a small pond?
water beetle
Name a food chain in a small pond?
algae > water beetle > dragonfly
Name a producer in Epping Forest?
177 species of mosses
Name a primary consumer in Epping forest?
Beetles
Name a secondary consumer in Epping forest?
Rabbit
Name a tertiary consumer in Epping forest?
Fox
Describe a food chain in Epping Forest?
shrubs > beetles > rabbit > fox
Name 3 natural causes of change in ecosystems?
pathogen, adaptation, extreme weather
Name 3 human causes of change in ecosystems?
Eutrophication, deforestation/new hedgerows
hunting
What degrees are Tundra found at?
60-70 North
What degrees are Tropical rainforests found at?
Equator
Capricorn/Cancer
What degrees are polar found at?
poles
Where are deserts found?
30 degrees N/s
Why are tundra plants low growing?
Retain heat and moisture
How much rain does a desert recieve?
250 mm
How much of the Earth is tropical rainforest?
6% land
How many species live in tropical rainforests?
More than half
What are the temperatures in polar regions?
<-50 degrees
How much medicine originates from tropical rainforests?
25%
What does low pressure lead to?
high rainfall
Are there distinct seasons in a tropical rainforest?
no it is hot and humid all year round
Which biome has the highest biodiversity?
Tropical rainforests