If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content
APES:
EIN (BI)
,
EIN‑2 (EU)
,
STB (BI)
,
STB‑1 (EU)

0

Possible mastery points
How many planets does it take to support your lifestyle?
APES:
EIN (BI)
,
EIN‑2 (EU)
,
EIN‑2.A (LO)
,
EIN‑2.A.1 (EK)
,
EIN‑2.C (LO)
,
EIN‑2.C.1 (EK)
,
EIN‑2.C.2 (EK)
,
EIN‑2.N (LO)
,
EIN‑2.N.1 (EK)

Practice

High-yield crops are high maintenance.
APES:
EIN (BI)
,
EIN‑2 (EU)
,
EIN‑2.B (LO)
,
EIN‑2.B.1 (EK)
,
EIN‑2.D (LO)
,
EIN‑2.D.1 (EK)
,
EIN‑2.F (LO)
,
EIN‑2.F.7 (EK)
,
EIN‑2.G (LO)
,
EIN‑2.G.1 (EK)
Living at the maximum sustainable yield.
APES:
EIN (BI)
,
EIN‑2 (EU)
,
EIN‑2.I (LO)
,
EIN‑2.I.1 (EK)
,
EIN‑2.I.6 (EK)
,
EIN‑2.J (LO)
,
EIN‑2.J.1 (EK)
,
EIN‑2.K (LO)
,
EIN‑2.K.1 (EK)
,
EIN‑2.L (LO)
,
EIN‑2.L.1 (EK)
,
EIN‑2.M (LO)
,
EIN‑2.M.1 (EK)
,
EIN‑2.M.2 (EK)
,
EIN‑2.M.3 (EK)
Level up on the above skills and collect up to 300 Mastery points
Conservation seeks the proper use of nature, while preservation seeks protection of nature from use.
APES:
STB (BI)
,
STB‑1 (EU)
,
STB‑1.A (LO)
,
STB‑1.A.1 (EK)
,
STB‑1.A.2 (EK)
,
STB‑1.B (LO)
"...the greatest good to the greatest number for the longest time." -Gifford Pinchot
APES:
STB (BI)
,
STB‑1 (EU)
,
STB‑1.C (LO)
,
STB‑1.C.1 (EK)
,
STB‑1.E (LO)
,
STB‑1.E.1 (EK)
,
STB‑1.F (LO)
,
STB‑1.F.1 (EK)
,
STB‑1.F.2 (EK)
,
STB‑1.G (LO)
,
STB‑1.G.3 (EK)
Level up on the above skills and collect up to 200 Mastery points
Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 500 Mastery points!

About this unit

This unit explores human activities that disrupt ecosystems both positively and negatively and the methods employed to reduce impact. In it you will learn about the tragedy of the commons, clearcutting, the green revolution, impacts of agricultural practices, irrigation methods, pest control methods, meat production methods, impacts of overfishing, impacts of mining, impacts of urbanization, and ecological footprints.