The Water Cycle
The Carbon Cycle
The Nitrogen Cycle
Primary and Secondary Succession
What Happens When Ecosystems
Change?
100
The water cycle is (_______) by the (______) (______).
The water cycle is driven by the Sun's energy.
100
Of what is the carbon an important element?
The carbon is an important element in every living thing.
100
What is nitrogen?
Nitrogen is another key element for all organisms.
100
What is succession?
Succession is the process of one ecosystem changing into a new and different ecosystem.
100
What does the word extinct speces mean?
When the last member of a species dies, the species becomes an extinct species.
200
What is evaporation?
Evaporation is the changing of a liquid into a gas.
200
About how many percent of your body is carbon?
About 18 percent of your body is carbon.
200
Where in your body is there nitrogen?
There is nitrogen in your muscles, skin, nerves, bones, blood, and enzymes.
200
With what does primary succession begin?
Primary succession begins in a community where few, if any, living things exist.
200
When did the Tasmanian wolf become extinct?
The Tasmanian wolf became extinct nearly 65 years ago.
300
What does condensation mean?
Condensation is the changing of gas into a liquid.
300
What do both animals and plants do?
Both animals and plants burn carbon-rich foods for fuel during cellular respiration.
300
The air is (____) percent nitrogen gas.
The air is 78 percent nitrogen gas.
300
What are pioneer species?
Pioneer species are the first species to live in an otherwise lifeless area.
300
What does endangered species mean?
Endangered species is when a species is in danger of becoming extinct.
400
What is precipitation?
Percipitation is any form of water that falls from the atmosphere and reaches the ground, such as rain, sleet, snow, or hail.
400
The (______) of a (______), for example, contains a large amount of carbon that will remain stored in a tree for as long as (___) (_____).
The wood of a tree, for example, contains a large amount of carbon that will remain stored in a tree for as long as it lives.
400
CAN or CAN'T nitrogen be fixed by EVERY bacteria?
Nitrogen CAN'T be fixed by every bacteria, it can be fixed by CERTAIN bacteria.
400
What is a climax community?
A climax community is the final stage of succession.
400
What does threatened species mean?
Species with low numbers that could become endangered are called threatened species.
500
What is a watershed?
A watershed is an area from which water is drained.
500
Decomposers, such as (________) and (______), break down dead or decaying plants and animals.
Decomposers, such as bacteria and insects, break down dead or decaying plants and animals.
500
As the plants grow, from where do they absorb nitrate?
As plants grow, they absorb nitrate from the soil.
500
What is secondary succession the beginning of?
Secondary succession is the beginning of a new community where a community had already existed.
500
What are the main threats of the hawksbill sea turtle?
The hawksbill sea turtle main threats are: 1. Hunting 2. Loss of nesting habitats 3. Water pollution
M
e
n
u