Biomes
Is a group of ecosystems that have similar light, temperature, humidity and living things?
For example: the rain forest in the world.
Specific living things occur in each type of biome. Each biome is in a specific climatic zone.
Biome of warm zones:
There are three types of biomes in warm zones:
The desert: is a biome where there is a little water. The temperatures are very high during the day and very low at night. Cacti, coyotes and camels live in the desert biome.
Tropical rain forest: it rains a lot. It is very humid and warm, are also very dense, they have a lot of trees, like rubber trees, and animals like the toucan.
The savanna: is a biome where a very dry season is followed by rainy season every year.
The most common plants are types of grass. The trees grass for apart from each other.
Giraffes and lions live in the African savanna.
Temperate zone biomes: this biomes are in the temperate zones.
Chaparral: evergreen plants and brushes are found here. These plants can survive hot, dry summers. Typical plants include thyme and oak. Rabbits and boars live here.
Temperate forest: pine trees and trees that lose their leaves in autumn are typical of these forest. Spruce and elm trees, deer and bears live here.
Prairies and steppes: this biome is a large plain covered with grass. There are few trees the prairie dog and the bison live in this biome.
Biomes of cold zones: the tundra and boreal forest are in cold zones.
The tundra: Has very low temperatures. Lichens and small plants like moss are characteristic plants. Reindeer and the arctic fox live here.
Boreal forest: are cold zone forest characteristic plants include lichens, pine trees and fir trees. The ground of boreal forests is covered with ice and snow for many months of the year. The beaver and the Canada lynx live in this biome. Boreal forests are also called taiga.
sábado, 26 de septiembre de 2009
The environment
Factors involved in climate
The climate of on area several factors, these factors change from one place to another. They depend on how far a place is from equator, how far it is from the ocean and its altitude.
Temperature: varies with distance from the equator and altitude. At high altitudes, the temperature is lower. At low altitudes, temperature is higher. Temperatures are milder on the coasts than in inland regions. This is due to the influence of the ocean.
Precipitation: such as rain, snow and hail, comes from the water in the atmosphere. There is more precipitation near the equator, on the coast and in the mountains. We use a rain gauge to measure precipitation.
Pressure: is the force s on that air exerts on the earth’s surface. Pressure varies with altitude. High areas have low pressure. Low areas have high pressure. We use a barometer to measure pressure.
Wind: is the movement of air. Winds move between areas that have different temperatures and pressures. We use an anemometer to measure wind speed. We use a weather vane to determine its direction.
Climatic zones: we can divide the earth into large climatic zones depending on the type of climate in each zone:
Tropical zone: is located between the tropic of cancer and the tropic of Capricorn. The temperatures are very high because the sun’s rays are perpendicular to the earth’s surface.
Polar zones: there are two; one is in the northern hemisphere, north of the Artic circle. The other is in the southern hemisphere, south of the Antarctic Circle. The temperatures at the poles a very low because the sun’s rays are very slanted when they reach the earth.
Temperate zones: there are two, on each hemisphere. They extend from the tropics to the polar circles. The temperatures in these areas are not extreme. This is because the sun’s rays are slightly slanted when they reach the earth.
The distribution of these zones generally depends on their distance from the equator. Within each zone, distance from the ocean and altitude also cause climatic differences.
Factors involved in climate
The climate of on area several factors, these factors change from one place to another. They depend on how far a place is from equator, how far it is from the ocean and its altitude.
Temperature: varies with distance from the equator and altitude. At high altitudes, the temperature is lower. At low altitudes, temperature is higher. Temperatures are milder on the coasts than in inland regions. This is due to the influence of the ocean.
Precipitation: such as rain, snow and hail, comes from the water in the atmosphere. There is more precipitation near the equator, on the coast and in the mountains. We use a rain gauge to measure precipitation.
Pressure: is the force s on that air exerts on the earth’s surface. Pressure varies with altitude. High areas have low pressure. Low areas have high pressure. We use a barometer to measure pressure.
Wind: is the movement of air. Winds move between areas that have different temperatures and pressures. We use an anemometer to measure wind speed. We use a weather vane to determine its direction.
Climatic zones: we can divide the earth into large climatic zones depending on the type of climate in each zone:
Tropical zone: is located between the tropic of cancer and the tropic of Capricorn. The temperatures are very high because the sun’s rays are perpendicular to the earth’s surface.
Polar zones: there are two; one is in the northern hemisphere, north of the Artic circle. The other is in the southern hemisphere, south of the Antarctic Circle. The temperatures at the poles a very low because the sun’s rays are very slanted when they reach the earth.
Temperate zones: there are two, on each hemisphere. They extend from the tropics to the polar circles. The temperatures in these areas are not extreme. This is because the sun’s rays are slightly slanted when they reach the earth.
The distribution of these zones generally depends on their distance from the equator. Within each zone, distance from the ocean and altitude also cause climatic differences.