Space
What is the center of our solar system?
Sun
What are living things in an ecosystem called?
Biotic factors
Name the 4 resouces living things need to survive.
food, water, air, space
What do we call a simple path of energy from one organism to another?
Food chain
If plants die, what happens to animals?
lose food, and die
What planet is known as the red planet?
Mars
what organism makes its own food?
Producers
What happens when there is not enough food or space?
hint** vocab word
Competition
Where does most energy in ecosystems come from?
The sun
What happens if a predator population increases?
Prey population may decrease
What causes night and day?
Earths rotation
What do we call animals that eat plants or other animals?
Consumers
what is a factor that limits population growth?
Limiting factor
What organism does a food chainstart with?
Producers
How can pollution affect an ecosystem?
It can harm plants and animals
What force pull objects twards Earth?
Gravity
What shows how energy moves between organisms in an ecosystem?
Food web or food chain
what term discribes the largest population an enviornment can support?
carrying capacity
What happens to energy as it moves up a food chain?
Some energy is lost
What might happen if a new species is introduced to an ecosystem?
Competition or imbalance
What are large groups of stars, gas, and dust called?
Galaxies
What would be at the top of the trophic level (ecosystem pyramid).
shark, butterfly, fish, rat
Shark
How does lack of resources affect a population?
Population decreases or stops growing
Which trophic level has the most energy?
Bottom (producers) Top (top consumers)
Bottom producers
How does removing one organism affect a food web?
Increase competition, or collapse the food web