Cycles of Change
Regular patterns of change
What is cycle?
Any physical hazard to life caused by having too much or too little of things needed for life
What is a stress?
Habitat destruction, construction and development, pollution, and excessive hunting and fishing
What are manmade stresses?
Carbon combines with oxygen to create
What is carbon dioxide?
Essential for living things to grown and function properly
What is nitrogen?
Regular divisions of the year
man's carelessness and lightning
What are causes of fires?
plants use this process to take in carbon dioxide mixed with water and energy from the sun to create sugar molecules and oxygen
What is photosynthesis?
Must happen for nitrogen to be usable for living things
What is combine with other elements?
Winds that change direction with the seasons usually bringing lots of rain
What are monsoons?
getting rid of dead trees, recycle nutrients in the soil
What are benefits of fires?
Plant and animal species that originally live in an ecosystem verses species that are not native to the area
What is the difference between a native species and invasive species?
the oxygen that goes into the air is needed for animals and humans to do the process of
What is respiration?
Most nitrogen is changed by
What is bacteria?
The six seasons
What are winter, spring, summer, autumn, dry, and wet?
Receives less rainfall than it needs
What is the difference between a flood and a drought?
What is extinct?
the process of bacteria, fungi, and other decomposers break down the bodies of dead things
bacteria lives in little bumps on the roots of plants
What is the water cycle?
The population is so small that species may become extinct or the population may become endangered in the near future
What is endangered and threatened?
What is carbon dioxide?
how animals get the form of nitrogen they need
What is eating plants and or other animals who have eaten plants?