There are two types of tundra in the world, Arctic and Alpine.

Their fat protects seals efficiently from the cold, both at sea and outside. They can weight up to 600kg, a good portion of which is fat. As an additional protection against the cold the have a thin layer of very dense fur. The male is bigger than the female, up to 3m long, but is not seen too often on the ice. They are very good divers, able to dive down to 600m and hold their breath for an hour. Their only predator is the killer whale, sometimes seen off the shores of Antarctica. During those dives they catch and eat mainly fish, squids, octopuses, krill, crabs and shrimp.

he is trying to collect weather data while on an Arctic ice floe.

 In general, Arctic winters are long and cold while summers are short and cool.

The clouds found most in the Arctic are .

South of the Antarctic Circle (at 66.5°S latitude) you will find the continent of Antarctica surrounded by the Southern Ocean, the geographic South Pole and the magnetic South

why summer is warmer in the northern hemisphere than in the southern?

Dark leaves allow the plant to absorb more heat from the sun in the cold tundra climate.Cotton Grass Cotton grass has seeds that are spread out across the tundra when their wings are caught by the wind.
Tundra climate is characterized by harsh winters, low average temperatures, little snow or rainfall, and a short summer season.

Thus, it lies between the summer and winter positions of the arctic front.

Arctic air temperatures highest since 1900, global report ..

Here's how to hitch them up.
- The most common commands for a dog team.
- Early European and American explorers did not often treat their sled dogs with care or compassion.
- To withstand the rugged conditions encountered on the Arctic ice cap, exploration sledges have to be very strong.
- Before plastic was available, sledge runners had to be kept smooth by other means.
- Global warming is changing the Arctic sea ice that is essential for both travel and hunting.
- Toughest sled dog race in the world.
- The world record for the most snow in one year is now held by Mount Baker.
- Frost crystals grow on window panes, blades of grass, or just about any other solid surface.
- The igloo is a snowhouse that was used by the Inuit as a temporary shelter.
- Snow is a good insulator, making it a very good material for building a shelter.
- Seasonal snow covers up to 33% of the Earth's total land surface.
- Caves can provide both an emergency and recreational winter shelter.
- A snow crystal is a single crystal of ice, but a snowflake can be as many as 200 stuck together.
- The Inuit, Aivilik and Igloolik languages have over 30 words for snow.
- Their forms usually fall into several basic categories.
- Ukichiro Nakaya created a system to classify snowflakes as to 41 individual types.
- It's easy.

The boreal forest corresponds with regions of subarctic and cold continental climate.

How do we investigate photosynthesis in the Arctic …

Most seaweeds grow only attached to the ocean bottom so their distribution is limited to the edges of continents and islands where the depth is within the photic zone.

A map of the Arctic treeline! - Visits to the Arctic have increased considerably.

from tiny lichens encrusting the rocky landscapes of the Arctic ..

All it takes is a magnifying glass, a little patience, and some nice warm clothes.
- Small, toothed whales that inhabit coastal waters in Arctic and Sub-Arctic areas.
- Trapped by sea ice.
- To insulate them from the cold, Arctic mammals have a thick, dense layer of connective tissue and fat under their skin called blubber.
- See how blubber helps animals survive in the cold Arctic environment.
- Close relatives of the northern right whales and also known as Greenland right whales - they are found only in the Northern Hemisphere.
- One of the largest sharks in the world, rivaling the Great White in size.
- Cruising the frigid waters beneath the ice, the sharks hunt in near darkness.
- The narwhal is one of the rarest whales, with only between 25,000 and 45,000 remaining in the world.
- The tusk is actually a tooth - one of a pair in the Arctic whale's upper jaw.
- Killer Whales are found in all oceans of the world, but are most common in the Arctic and Antarctic waters.
- Archaeological evidence tells us of ancient whale hunting societies in the North American Arctic.
- Whalers began hunting whales in the Arctic as far back as the 16th century.

Arctic air temperatures highest since 1900, global …

Some living things (organisms) capture energy from sunlight or chemicals (producers) and turn that energy into chemical energy (like sugars) that other living things can use (consumers). Plants are an example of a producer and you are an example of a consumer. The organisms address within the ecosystem is that organisms habitat.