The study of organisms and their environments
Ecology
All food chains begin with what?
Producers/Autotrophs
When both species benefit
mutualism
Based on the graph, how many millions of people can this particular area comfortably hold (aka - carrying capacity).

1.5 million
All of the living AND non-living things in a particular area
Ecosystem
grass --> grasshopper --> frog --> snake
What is the secondary consumer?
Frog
When one benefits and the other is hurt
parasitism
Which years did the population exceed carrying capacity (Hint: there are 4)

1850
1875
1910ish
1925
All of the same type of species in a specified area
Population
How much energy is lost from link to link of a food chain and step to step of an energy pyramid?
10%
When one benefits and the other is not affected
Commensalism
Biotic or Abiotic?

Biotic
What type of succession occurs when there is NO soil left after the catastrophic event?
Primary Succession
The top of energy pyramids include the _____ predator.
Apex
What symbiotic relationship?
Parasitism
Are these 3 items biotic or abiotic?

Abiotic
The first organism to return to an area is a ______ species. When the area is back to normal this is called a _____ community.
Pioneer; Climax
In this food web, what is the apex predator?

Hawk
Hummingbird gets nectar. Flower gets pollinated

Mutualism
These are all considered? (Hint: starts with "D")

Decomposers