Cat 1
Cat 2
Cat 3
Cat 4
Cat 5
100

what is the cause of El Nino?

when trade winds weaken, then reverse to move west to east in Equatorial Pacific

100

Why do islands support fewer species than the mainland?

Limited resources, catastrophic events, higher extinction rates & higher difficulty to replace extinct species

100

the most efficient irrigation method to conserve water

drip irrigation

100

3 characteristics of a specialist 

less likely to move to a new habitat, less likely to adapt to new conditions, and is at a disadvantage when conditions change rapidly

100

How do plants play a role in the carbon cycle?

Plants absorb carbon dioxide during photosynthesis.

200

the largest carbon sink

The oceans



200

characteristics of a growing population pyramid

  • Wide base, inverted cone, high death rates. Low life expectancy
200

the weather conditions prevailing in an area in general or over a long period. 

what is a climate

200

The cooling effect of reduced pressure on air as it rises higher in the atmosphere and expands

What is adiabatic cooling?

200

An area that is biologically isolated that a species occurring within the area rarely mixes with any other population of the same species

What is a habitat island?

300

If a population die declines in number, the genetic diversity carried by the surviving individual is greatly reduced

Population Bottleneck

300

3 reasons death rates decline during the    . developing stage of the DTM

Better sanitation, clean drinking water, and availability of food and healthcare

300

How does vegetation affect climate?

plants give off moisture, so the more plants the cooler and more moist the region will be.

300

5 factors that affect TFR

  • Availability of birth control
  • Physiological factors (sterility)
  • Social factors (religion, race, caste, education
  • Economic factors
  • Family planning
300

What is the Tragedy of the Commons?

A shared and limited resource becoming depleted through excessive use

400

Theoretically, in what period does a population grow at its maximum rate?

When it is at about half carrying capacity


400

examples of density-independent factors

Storms, fires, heat waves, and droughts


400

Which type of ecosystem service is flood control and air purification?

what is regulating?

400
  1. The most important factors that define a biome

climate (temperature and precipitation) and plants

400

species that gives early warning signs of damage or danger to a community

  • What is an indicator species?
500

What is the one chemical cycle with no atmospheric component

The phosphorus cycle.

500

What drives atmospheric circulation at the equator?  What is the name for this region?

 intense sunlight leads to rising air, and convergence of the 2 Hadley cells.  The ITCZ (intertropical convergence zone)

500

what is permafrost and in which biome is it prevalant 

Permafrost is any ground that remains completely frozen—32°F (0°C) or colder—for at least two years straight.  Biome = tundra

500

3 physical properties of soil and how they impact productivity

Texture - particle size distribution; Permeability & porosity -->  impact water-holding capacity of soil

500

what is nitrification and what is its role in the nitrogen cycle? 

Nitrification definition is - the oxidation (as by bacteria) of ammonium salts to nitrites and the further oxidation of nitrites to nitrates.  An important step after nitrogen fixation to make nitrogen more biologically available.




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