Are People Living on Mars?
Percival Lowell, an American astronomer, thought he saw canals criss-crossing the deserts of Mars when he observed the planet through his telescope early this…
Tag
Survival
What Is the Role of Bacteria in Nature?
Bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria are minute organis
Why Do Birds Take Baths?
Birds love having water around for bathing and drinking. They too lose water, through respiration and in their droppings. Most small birds need to…
Why Is Pollution a Problem?
Pollution is a problem because man, in an increasingly populated and industrialized world, is upsetting the environment in which he lives. M
When Do Birds Migrate?
When Do Birds Migrate? Millions of birds of many different varieties migrate at the end of summer. With unfailing regularity they leave the