Power Up
What is a producer?
An organism that can make its own food using sunlight.
A series of events in which one organism eats another to obtain energy.
Food Chain
What is biogeography?
The study of where organisms live - It combines biology and geography to describe species distribution.
The process by which water move from Earth's surface to the atmosphere and back.
The water cycle
This gas makes up 78 percent of the air but can't be used directly by most living things.
Nitrogen
What are herbivores?
Consumers that eat only plants.
What is an energy pyramid?
A diagram that shows the amount of energy available at each level of a food web.
What is dispersal?
The movement of organisms from one place to another.
What is evaporation?
When liquid water changes to a gas state (water vapor).
This gas makes up 78 percent of the air but cannot be used directly by most living things.
Nitrogen fixation - bacteria in the roots of legumes perform this process
What is an omnivore?
A consumer that eats both plants and animals.
The percentage of energy that is transferred from one level of a food web to the next.
10 % - The other 90 percent is lost as heat or used for life processes.
What are native species?
Species that have naturally evolved in an area. They have lived there since before human interference.
Which are the four types of precipitation?
Rain, snow, sleet, and hail.
Bumps on the roots of legumes where nitrogen-fixing bacteria live.
Nodules, they provide a home for symbiotic bacteria
What are defcomposers?
Organisms that break down wastes and dead organisms and return raw materials to the environment.
What is a Food Web?
Overlapping food chains in an ecosystem - Food webs are more realistic than food chains because organisms eat many things.
What are physical barriers?
Mountains, deserts, and oceans that stop organisms from moving.
What is the building block for the matter that makes up the bodies of living things?
Carbon is recycled through photosynthesis and respiration.
What are legumes?
Plants like clover, beans, and peas that help enrich fields with nitrogen.
What is scavenger?
A carnivore that feeds on the bodies of dead organisms.
What is there is not enough energy?
At each step in the food chain, most energy is lost. Only a little energy goes up to the top animals.
Why did unique animals like kangaroos develop in Australia?
Australia was separated from other continents for millions of years. Because of this, new species evolved there, and other animals could not arrive.
How the oxygen is produced using CO2?
Photosynthesis.
The main difference between how energy and matter move through an ecosystem.
Energy is lost as heat and must be resupplied by the sun; matter is reused forever.