Animals are a natural source of
fascination for people. The animals we encounter in our daily lives
move about us and often have complex behaviors that can affect us
directly. And lets not forget that we ourselves are members of
the animal kingdom.
But most of the animals in the
environment escape our detection. Many live in the oceans, and many
others are too small to see, or are hidden in soil or in the bodies
of other creatures.
In this Lesson, well get an
introduction to the entire animal kingdom starting with some of the
simplest animals. Well also examine the basic characteristics
that distinguish animals from all other forms of life.