Round and Round
A regular pattern of change
What is a cycle?
Photosynthesis, respiration, and decomposition are part of this cycle.
What is the carbon cycle?
Precipitation, transpiration, evaporation, and condensation are part of this cycle.
What is the water cycle?
Any physical hazard to life caused by having too much or too little of things needed for life
What is a stress?
When the last-known member of a species dies, the species is said to be _____.
What is extinct?
The year is divided into these to form one of earth's cycles.
What are seasons?
People and animals breathe in oxygen and breathe out carbon dioxide during this part of the carbon cycle.
What is respiration?
This is the part of the plant where bacteria that change nitrogen into usable compounds can be found.
What is in nodules on the roots?
This stress occurs when an ecosystem receives more water than it can use or store.
What is a flood?
When the population of a species is so small that the species may soon become extinct, the species is _____.
What is endangered?
Some areas of the earth have only these two seasons.
What are the wet season and the dry season?
This provides energy for the plants.
What is the sun?
This element is important for living things to grow and function normally.
What is nitrogen?
This stress occurs when an ecosystem receives less rainfall than it needs.
What is a drought?
This is the term for species that are not native to an ecosystem and can cause harm.
What is invasive species?
This is how consumers get nitrogen compounds.
What is they eat other animals or plants?
Name a benefit a fire can bring to an ecosystem.
What is reducing future fire threats, adding nutrients to the soil, adding variety to the ecosystem, or opening seeds that need heat to sprout?
Plants release water vapor into the air during this stage of the water cycle.
What is transpiration?
This makes a drought different from other natural disasters.
What is it does not have a definite beginning or ending?
This is the term for plant and animal species that originally live in an ecosystem.
What is a native species?
This is released into the air during decomposition.
What is carbon dioxide?
During respiration organisms use oxygen and these molecules to produce energy.
What are sugar molecules?
This is the term for gradual changes in the populations of organisms in an ecosystem.
What is succession?
Name one problem caused by an invasive species.
What is increased predators, diseases, or increased competition for food and water?
This is probably the largest manmade stress on an ecosystem.
What is habitat destruction?