Abiotic & Biotic Factors
All the living things and nonliving things in a given area.
ecosystem
The process during which liquid water changes into a gas called water vapor.
evaporation
A model that shows how energy flows in an ecosystem through feeding relationships.
food chain
Describes average weather conditions in an area over time.
climate
The layer of gases that surrounds Earth.
atmosphere
All the living things in an ecosystem.
biotic factors
The process during which water vapor changes into liquid water.
condensation
The process during which producers use chemical energy in matter rather than light energy and make food.
chemosynthesis
A model of energy transfer which shows how food chains in a community are interconnected.
food web
A model that shows the flow of energy from one trophic, or feeding, level to the next in an ecosystem.
energy pyramid
The nonliving things in an ecosystem such as sunlight and water.
abiotic factors
Water that falls from clouds to Earth’s surface.
precipitation
A series of chemical reactions that convert light energy, water, and carbon dioxide into the food energy molecule glucose and give off oxygen.
photosynthesis
Which way do the arrows point in a food chain and food web and what do they show. Draw an example with 3 organisms.
They point toward the organism that is consuming another organism to show how the energy flows.
plant---> grasshopper--->frog
Explain the difference between a detritivore, carnivore, omnivore, and herbivore.
detritivore- decomposes dead organisms
carnivore- eats only meat
omnivore- eats both plants and meat
herbivore- eats only plants
Which process helps keep temperatures on Earth from becoming too hot or too cold?
the greenhouse effect
The process that changes atmospheric nitrogen compounds that are usable by living things.
nitrogen fixation
What are found in the bottom of the energy pyramid?
producers
What is photosynthesis?
A chemical process used by plants which requires carbon dioxide, water, and sunlight to produce sugars and give off oxygen.
Describe the oxygen cycle.
Organisms such as a cow exhales carbon dioxide which is taken in by plants for photosynthesis and creates oxygen for the cow to breathe.
Describe some of the abiotic and biotic factors you may see in a lake.
Abiotic- water, air, soil
Biotic- fish, plants, algae, bacteria, ducks
Describe the greenhouse effect.
The atmosphere is made of gases that trap some of the solar radiation from the Sun which helps keep the Earth warm.
What are detritivores and why are they important?
They are organisms that decompose dead plants and animals. They release nutrients into the soil and clean up dead organisms.
Describe the water cycle.
Liquid water changes to water vapor through the process of evaporation. Then it collects on dust particles in clouds and becomes a liquid through the process of condensation. Finally, it drops back to the Earth's surface which is called precipitation.
Describe the process deep sea producers use to make sugars since there is no sunlight for photosynthesis.
They use chemosynthesis which is the process of using chemical energy from hydrothermal vents.