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When Do Worms Turn?
If the earthworm detects an unfamiliar object next to its skin, the muscles will contract immediately and the body will turn to avoid the…
What Is a Praying Mantis?
What Is a Praying Mantis? The praying mantis is an insect belonging to the family Mantodea that contains over 2,400 species and about 430…
Why Does Wood Have a Grain?
Why Does Wood Have a Grain? The grain in a piece of wood is the pattern produced by the annual bands or rings which…
When Does the Male Stickleback Turn Red?
When Does the Male Stickleback Turn Red? The male stickleback's belly turns red at the start of the breeding season in spring. This shade…
Why Can Owls See Well at Night?
Why Can Owls See Well at Night? The night vision of owls is hundred times as keen as that of human beings, because their…