The Appalachian Mountains are the most prominent feature of Eastern North America.

The water spider spends its entire life underwater.

The ogre-faced spider drops net webs onto its prey from a thin strand of silk.

The Goliath Birdeater Tarantula is the largest spider in the world.

There are 27 cubic feet in a cubic yard.

Flies, gnats, and mosquitoes belong to the Diptera family. Diptera means "two wings."

The monarch butterfly's scientific name is danaus plexippus.

The scientific name of the ordinary house-cat is felis catus.

Saskatchewan's main product is its wheat. In fact half of Canada's wheat comes from Saskatchewan.

Penicillin, an important drug, comes from mold.

The Bay of Fundy has some of the highest tides in the world.

Prince Edward Island is the most densely populated province in Canada, but it is also the smallest.

The tallest sequoia tree is called the General Sherman Tree, which is 272 feet tall and 36 feet around at the base.

Lake Superior is the largest freshwater lake in the world.

The sugar maple is the primary source of maple syrup.

Removing a ring of bark from around a tree, a process known as girdling, is harmful to the tree as it cuts off its supply of nutrients and water from the soil.

The blue whale (over 100 feet long) is the largest mammal and the giraffe (18 feet tall) is the highest land animal, but they are dwarfed by trees like the white oak, giant sequoia, and especially the California redwood, which can be up to 360 feet tall.

Pemmican is a mixture of dried meat pounded together with fat and berries.

The beaver is North America's largest rodent.