Vocab
Define an ecosystem
Interaction of biotic & abiotic components
What is the cycle that involves precipitation?
The water cycle
What does too much of anything in the environment lead to?
An IMBALANCE of nutrients
What community do all living components of an ecosystem form?
Biotic community
Give an example of a primary consumer?
Deer, any herbivore
What is: a model (web) that shows how energy and matter pass through an ecosystem?
Food web
In the water cycle, what is it called when water moved form a body of water to the atmosphere?
Evaporation
What is an example of a chemical that negatively impacts the environment?
Pesticide, insecticide, fertilizer
List 3 abiotic factors that could impact a hare's population
- Temperature
- Shelter
- Precipitation
- Source of food
In which biochemical cycle do plants and animals die and decay in order for the chemical to get back into the plants again?
Nitrogen cycle
What does biotic mean? & Give an example.
Living!
During cellular respiration, what is the "sugar" that plants produce (and humans consume)?
Glucose
What gas is released when fossil fuels are burned?
Carbon dioxide
(distance from equator) = abiotic factor
What are two events that can reduce the size of a population?
Death & Emigration
What does biodegradable mean?
A substance that can break down.
During the nitrogen cycle, what converts nitrogen gas to nitrates used in the soil?
Bacteria
Give an example of what global warming can lead to.
- Melting of ice caps
- Changes in weather
- Droughts on agriculture lands
Is an invasive species being introduced into a population a biotic or abiotic factor?
Make a 4 level food chain. (arrows and animals)
Answers may vary
What does immigration mean?
An organism moving INTO an ecosystem to increase the population.
In the oxygen & carbon cycle, what is the process that removes CO2 from the atmosphere?
Photosynthesis
What does habitat destruction lead to?
Less organisms :(
What is a BIOTIC limiting factor for grass plants?
Number of primary consumers
List all 4 factors that can change the size of a population.
Birth rate, death rate, immigration, emigration