Biomes
This is the coldest and driest biome. Found near the poles.
Tundra
Do plants add or take away carbon from the atmosphere?
They take away carbon.
The cutting down of forests is known as _________________________________.
Deforestation
An organism turning in response to a change is known as what?
Tropism
Farmers add nutrients to the ecosystem by using what?
Fertilizer
What is the main difference between the tundra and the taiga biomes?
The taiga has trees. Tundra has no trees.
What human activity is adding the most extra CO2 to the atmosphere?
Burning fossil fuels or combustion.
Too much nutrients polluting water causes what to happen?
Algae grows out of control and oxygen is used up.
Deciduous trees respond to the winter cold by _______________________________.
Dropping their leaves and going dormant.
What is the most common gas in earth's atmosphere?
Nitrogen
Higher temperatures and drought are changing many grasslands into what biome?
Desert
They trap heat in the atmosphere.
What is it called when too much fertilizer pollutes a body of water and all its oxygen gets used up, killing fish?
Eutrophication
Bears and groundhogs sleeping all winter is known as _____________________________.
Hibernation or dormancy
Which biome do we live in?
Deciduous forest
This biome is heating up three times faster than any other biome due to climate change.
Tundra biome
How will planting more trees help fight climate change?
Trees absorb lots of carbon from the air.
How does over-fishing hurt estuary ecosystems?
The population of fish, crabs, and oysters can be destroyed.
How will plants respond if their pot is knocked over?
By growing upwards again; tropism.
Name a greenhouse gas other than CO2
Methane, water vapor, CFC, etc.
If the tropical rainforest biome is destroyed, why will climate change get worse?
There will be less trees to absorb carbon. Also, more fires.
What percent of a tree's body is made of carbon?
54%
How does limiting the amount of fish and crabs people can catch help an ecosystem?
What is phototropism?
Plants bending toward the light.
What powerful greenhouse gas do cows emit?
Methane