Climate:
Although 90% of the country is within the tropical zone, the climate of Brazil varies considerably from the mostly tropical North (the equator traverses the mouth of the Amazon) to temperate zones below the Tropic of Capricorn (23°27' S latitude), which crosses the country at the latitude of the city of São Paulo. Brazil has five climatic regions: equatorial, tropical, semiarid, highland tropical, and subtropical.
http://en.wikipedia.org/wiki/Geography_of_Brazil#Climate
Topography:
Brazil covers a total area of 8,514,215 km² (3,287,357 sq. mi) which includes 8,456,510 km² (3,265,076 sq. mi) of land and 55,455 km² (21,411 sq. mi) of water. The highest point in Brazil is Pico da Neblina at 2,994 m (9,823 ft).
http://en.wikipedia.org/wiki/Geography_of_Brazil
Natural resources:
Brazil is endowed with vast agricultural resources. Brazil is the world's largest producer of sugarcane and coffee, and a net exporter of cocoa, soybeans, orange juice, tobacco, forest products, and other tropical fruits and nuts.
http://en.wikipedia.org/wiki/Economy_of_Brazil#Agriculture_and_forestry
Proven mineral resources are extensive. Large iron and manganese reserves are important sources of industrial raw materials and export earnings. Deposits of nickel, tin, chromite, bauxite, beryllium, copper, lead, tungsten, zinc, gold, and other minerals are exploited.
http://en.wikipedia.org/wiki/Economy_of_Brazil#Industry
Hope this helps.
Andy