Category Archives: CAN?
226.CAN A VIRUS BE SEEN?
A virus is the smallest organism that produces disease. It cannot be seen directly by the ordinary microscope. But this doesn’t mean that science hasn’t been able to study the structure of a virus. Today there these tiny organisms to become visible. And science is able to know quite a bit about the sizes and shapes of various types of viruses by means of the electron microscope.
160.CAN OYSTERS LIVE OUT OF WATER?
When we look at an opened oyster lying in its shell, it’s hard to believe that this is a creature capable of performing many complicated functions. Let’s examine the oyster and see how it manages to get along in life.
There are more than 100 species of living oysters, and their shape, size, and shell vary with their environment. The body of the American oyster rests on the left, cuplike side of the shell; the right, or upper side, is usually flat. The narrow part of the shell is the front end of the oyster; the broad and rounded part is the back.
124.CAN SALAMANDERS LIVE THROUGH FIRES?
Have you ever seen a salamander? They’re not very pleasant-looking creatures. Their slender bodies, long tails, and sprawling legs make them look like lizards. And probably because they have a smooth, shiny skin that always looks wet, a legend has arisen about them that they can pass through fire without being harmed.
