Which group receives the MOST energy in an energy pyramid.
Producers
+15
What would the impact be if someone dumped used oil into our pond?
Kill off organisms/ damage producers causing a chain effect.
+10
A relationship where both organism benefit.
Mutualism
-20
This plant tissue transports water upward.
Xylem
+15
What is the name for maintaining balance?
Homeostasis
+20
This percentage of energy is lost between trophic levels.
90%
-10
Why are invasive species harmful
They out compete the native animals and have no predators
+20
A relationship where one benefits and the other is slowly harmed.
Parasitism
+15
Plants bending toward light is called this.
Phototropism
-15
The circulatory and respiratory systems work together to exchange this gas.Crucial for cells to remain living
Oxygen
-20
Which trophic levels receives the least amount of energy?
Tertiary/Apex predators
+20
Ecosystems with high biodiversity are usually more...
stable
-5
A relationship where one benefits and the other is unaffected.
Commensalism
+20
These tiny openings that help plants exchange gases.
Stomata
+20
The main function of the circulatory system is to?
Transport oxygen/nutrients throughout the body
+5
What is the name for multiple food chains put together.
Food web
+5
What is the job of decomposers
Break down dead organic material and return nutrients back to soil.
+10
Sharks and remora fish are an example of this relationship. 
Commensalism
-5
What attracts pollinators to a flower
Brightly colored petals
+10
This system produces hormones to control bodily functions
Endocrine
+5
Why are producers so special?
They can make their own energy
-15
Mr.Belman has this type of cowboy boots? Name the specific leather/animal
Ostrich
+5
This relationship involves one organism hunting another for food.
Predation
+10
Phloem is responsible for transporting ?
Food/glucose
+15
Survival of the _________
Fittest
-10