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1. The gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen.
2. Nitrogen
3. 78.09%
4. Several millions are known to have died due to direct or indirect effects of Air pollution. Children in areas exposed to air pollutants are said to commonly suffer from pneumonia and asthma.
1. Insect eating bats eat lots of insects. With lots of bats eating lots of insects, there will be fewer insects to bug you. Farmers like bats because they can use fewer pesticides on their crops, which save the farmers lots of money. In the tropics, fruit and nectar eating bats are important for dispersing seeds and pollinating flowers. In fact, more than 300 tropical plants depend on bats for seed dispersal and pollination. These plants include bananas, mangoes, avocados, date, and figs. By dispersing seeds, bats are helping rebuild rainforests that humans have cut down. This might surprise you, but vampire bats are important to humans too. Vampire bats have a special chemical in their saliva that keeps blood from clotting. This allows them to easily drink blood from cows and pigs. Scientists studied this chemical and used it to develop medicine that helps humans that suffer from blood clots and strokes.
2. Since bats are active and hunt at night rather than during the day they are regarded as nocturnal
3. Bats can see almost as well as humans. However, at night, their ears are more important than their eyes - they use a special sonar system called 'echolocation,' meaning they find things using echoes.
4. Bats are common flying mammals that belong to the taxonomic order Chiroptera. There are over 1200 species of bats that are known to scientists.