Carbon Cycle
True or false: carbon is in living and non-living parts of an ecosystem
True
This gas makes up about 78% of the atmosphere
Nitrogen gas
When liquid water rises into the air and changes to a gas it is called:
Evaporation
True or false: Some of the water people use is taken from groundwater
True
When decomposed organisms are buried under the Earth for millions of years and undergo heat and pressure, they can turn into:
Fossil Fuels
What is the name of a gas that contains carbon that is common in our atmosphere?
Carbon Dioxide
This human invention has been the main cause of harmful algal blooms
Fertilizers
When water vapor cools and forms clouds, it is called:
Condensation
Humans have altered the carbon cycle in this major way
Burning of fossil fuels, releasing carbon dioxide into the atmosphere
Why do people burn fossil fuels?
To get energy (for heat, electricity, etc.)
If there are more plants, it reduces the amount of this gas in the atmosphere
Carbon dioxide
Fertilizers are used in agriculture because they:
Give nutrients like nitrogen to their crops
When water falls from clouds as rain, hail, sleet, or snow, it is called:
Precipitation
Humans have altered the nitrogen cycle in this major way
Giving nitrogen-rich fertilizers to crops
What gas do fossil fuels produce?
Carbon Dioxide (and several other gases)
When dead organisms are broken down, releasing nutrients like carbon into the soil, it is called:
Decomposition
Humans get nitrogen from this
Our food
Water goes into the ground in this process:
Infiltration
Harmful algal blooms can cause these issues if people swim around them:
Itchy eyes, trouble breathing
What is the name of the effect that carbon dioxide (and other gases) have when they warm our atmosphere
Greenhouse effect
Plants need carbon dioxide for this process to occur
Photosynthesis
Bacteria add nitrogen to the soil in this process
Nitrogen fixation
Water evaporates off the leaves of plants in this process
Transpiration
Because fossil fuels take millions of years to form, they are considered to be this type of energy source:
Non-renewable
Chalk is similar to fossil fuels because:
It is also composed of organic matter that was once from ancient organisms