OCR GCSE Geography B Sustaining Ecosystems overview quiz quiz

It is recycled endlessly between the organisms, never being lost from the system

It flows one way from the Sun, losing about 90 percent at each level

It is stored permanently in the soil and never passed on to any organism

It increases at each level of the food chain, building up towards the top

They produce energy from sunlight, just as green plants do

They are the top predators at the very head of the food chain

They break down dead matter and recycle nutrients to the soil

They prevent any new plants from growing in the ecosystem at all

Sinking dry air keeps the climate warm but very dry

It lies far inland, a long way from any ocean or sea

It has very cold nights followed by mild, dry daytimes

Rising air brings constant heat and heavy rainfall

Most nutrients are stored in the biomass and recycled quickly

The soil is permanently frozen solid for the whole of the year

There is no rainfall at all to weather the underlying bedrock

The trees and other plants do not actually need any nutrients

To store water inside the leaf for the long dry seasons

To channel heavy rain off so the leaf does not rot

To reduce heat loss from the leaf during the cold nights

To let the leaf float on the surface of flood water below

It adds extra nutrients to the soil, making the ground more fertile

It freezes the bare ground solid, locking the loose soil in place

It removes the canopy and roots, so rain washes the bare soil away

It increases the number of trees, so more roots can bind the soil

A type of rainforest soil

A layer of snow that melts each summer

A warm ocean current

Ground that stays permanently frozen

Thick fur and a layer of blubber for insulation

Thin fur and no body fat to lose heat quickly in the heat

Drip-tip fur that channels heavy daily rain off the body

Buttress legs that let them stand upright in deep wet soil

They have far too many different species for anyone to manage

They are simple, with low biodiversity and slow recovery

They have no permafrost at all beneath the surface of the ground

They warm far more slowly than the rest of the planet does on average

Too much heavy rainfall flooding the frozen ground

Too many tall trees growing and shading out the tundra

Climate change, which melts ice and thaws permafrost

Frequent volcanic eruptions covering the ice in fresh ash

Goods are processes such as carbon storage; services are physical products such as timber

They are exactly the same thing, just two different names for the very same idea

Goods only exist in cold polar regions, while services are only found in rainforests

Goods are products such as timber; services are processes such as carbon storage

The Antarctic Treaty banning mining in Antarctica

A single local ecotourism business run in one rainforest village

Selective logging carried out by one local forest community alone

Planting a single small garden of native plants in one back yard