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  WHALES AND OTHER SEA MAMMALS        Sea mammals spend most of their lives in or near the sea. There are three groups of sea mammals. Whales and dolphins are called cetaceans. Seals and walruses are called pinnipeds. Manatees and dugongs are called Iranians. Well over 10 million crabeater seals are living in the icy Antarctic. Seals are found in many parts of the world, but the southern crab eaters are the most common type of seal on Earth. A whale’s body is designed for swimming. It has a smooth, streamlined shape for pushing through the water, and blowholes for breathing on top of its head. The huge blue whale is the biggest mammal in the sea. In fact, it’s the biggest animal that has ever lived. It can grow more than 30 meters long and weigh as much as 130 tons. The ancestors of today’s whales once lived on land. About 50 million years ago, they went into the sea to look for food, and their bodies adapted to life in the water. Whales have a thick layer of fa...

    CANCER AFFECTS ONE OF EVERY TEN INDIANS World  Cancer  Day is February 4th, and the  WHO  has issued two global reports to commemorate the occasion. A total of 1.16 million new cancer cases, or 7,84,800 people, are expected to be diagnosed this year.  According to the  WHO study on cancer burdens and trends in India in 2018, there were 2.26 million 5-year prevalent cases in India's population of 1.35 billion people.  One out of every ten Indians will develop cancer at some point in their lives, and one out of every fifteen will die from it. The report calls for the development of a global cancer agenda to mobilize stakeholders and assist countries in prioritizing investments in cancer prevention and universal health coverage. Breast cancer  (1,20,000 cases), cervical cancer (97,000 cases), lung cancer (68,000 cases), stomach cancer (57,000 cases), and colorectal cancer are the six most common cancer forms in India, according...