#1 Populations
What is population?

Two things that increase a population

Two things that decrease a population

Humans and dogs live together, are they part of the same population? Why or why not?


#2 Limiting Factors
Explain each of the 3 limiting factors listed on this site:

1.________________________-


2.________________________-


3.________________________-


#3 Ecosystems
What is an ecosystem?

What do ecosystems include?

What happens if one part of an ecosystem in damaged or destroyed?


#5: Food Chains
What do all living things need? Why?

Where do animals get it? Plants?

What do the links (arrows) in a food chain represent?

Explain how the last food chain represents a full circle of life.


Click on the tabs on the left and fill in the blanks (herbivore, omnivore, decomposer, etc)

A person is called a _____________________________________ because they eat meat & vegetables.

________________________ are animals that only eat meat.

________________________ are animals that only eat plants.

________________________ break down dead matter.




Click on “Food Chain Game” in upper left hand corner
Play the game, then diagram (draw and label) the last food chain:










#6 Food Webs

Choose a food Web

Name a consumer in your food web _______________________________

Name a producer in your food web ________________________________

Name a decomposer(if there is one) in your food web ______________________________


#7 Energy in an Ecosystem

Write three to five sentences describing what you learned:



Draw and label an Energy Pyramid:


















Why are there less organisms as you move up the energy pyramid?



#8 10% Rule and Energy Pyramids

Nearly all of the ________¬¬¬¬¬__________________ that drives ecosystems ultimately comes from ___________________. __________________, which is an_________________ _________________ factor, by the way, enters the ecosystem through the process of photosynthesis_________________.
Why are plants called producers?


What are other producers besides plants?


How much energy to consumers obtain when they eat? What happened to the rest?