Participants in the economy 
Everyone who produces, consumes or distributes products participates in the economy. We can divide the participants into three types: households, businesses and the government
• A household is all of the people who live together. Normally a household is the same as a family. However, someone who lives by himself is a household, and so are friends who live together. • Businesses buy and sell goods and/or services. • The government includes central, regional and local
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Temperature: Average energy of molecules or atoms in a material – Kinetic energy of a substance. Heat: Total energy of molecules or atoms in a material,You can have a large amount of heat but low temperatures Can have high temperatures but little heat Latent heat: The amount of heat required to completely change a quantity of water from phase A to phase B with no corresponding change in temperature. “Latent” means “hidden” Residence timesResidence time of a species = mass (or volume) in

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1.2 levels evolution: 1. Adaptation

2. Speciation

2.5 agents of evolutionary change: 1. mutation

2. gene flow

3. non-random mating

4. genetic drift

5. selection

3.Adaptation: evolution within species; previous stuff

4.Adaptive radiation: rapid evolution of diversely adapted species from a common ancestor

- occurs when a species enters a new habitat or niche

5.Aging: Ordered sequence in layers of rock relative age of fossils

6.agriculture in artificial selection: rusts from generations of humans selection

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Abode: a place in which a person stays.

Plaster: concrete light mixture to apply on walls.

Chimney: structure that rises above the roof as escape route for smoke.

Chinks: a crack, break, fissure or narrow opening.

Hewn: handmade, with physical effort.


Casing: framework around a window.

Dew: moisture in small drops on a surface.

Exude: to come out gradually in drops.

Midst: airborne visible vapor.

Ripple: small undulation or soft waves.

Sturdily:strongly built; firm.

Rout: to defeat decisively.


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Why did the Muslims start conquering the Iberian Peninsula? When did this happen and what is the name of the battle that gave the victory to the Muslims? Why was it relatively easy to conquer this territory?They had been conquering territories in the Mediterranean and North Africa. They also wanted to conquer Europe, so they started with the Iberian Peninsula, which was the closest territory to North Africa.This happened in 711.The name of the battle is Battle of Guadalete.It was relatively easy

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Geografía 3ºeso

THE TERTIARY SECTOR  involves activities that do not produce material products,but which instead provide individuals, companies and the goverment with services such as transport, healthcare, tourism, education, administration and banking.


Role in the economy: the tertiary sector currently provides jobs to 60% of the active population in developed countries. In certain cases, it accounts for over 70

% of the Gross Domestic Product (GDP). In Spain, it provides work for 76% of the population

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