The outdoor world is full of secrets. And they are __(1)__ interesting that quite a lot of people are busy __(2)__ them.
    All around us are birds, animals, trees and flowers. The facts about how they live and grow are as _(3)_ as anything could be.
    Do you know that one of __(4)__ presidents of the USA __(5)__ hours and hours studying birds? A businessman near New York became so __(6)__ in insects that he began to get __(7)__ together. He now has more than one thousand different kinds of insects carefully __(8)__ in glass boxes.
    Come with me, and I will help you find some nature's secrets. Let us go __(9)__ through the woods and fields. Here we shall find how a rabbit tells another they are in danger. We shall __(10)__ a mother bear and her young ones when they look for __(11)__ and get ready for winter sleep. We shall watch bees dancing in the air to let other bees know __(12)__ they can find food. I will __ (13)__ you many other interesting things, but the best thing that I can teach you is to keep eyes and ears __(14)__ when you go out of doors. Nature tells her secrets only__(15)__ people who look and listen carefully.