or that it helped you learn something new. Evolution occurs automatically for survival and for millions of years it has been playing catch-up with our dynamic world. Earth was thought to exist in an optimal form.īut natural selection relies on the fact that the world is constantly changing. The ideas that mountains could rise, and climate and organisms could change didn't exist. That's where this theory fails.' Are we still evolving?įor millennia, the world was viewed as static. These animal's offspring would inherit longer necks as a result of their parents' efforts.Īdrian says, 'If you tried to stretch your neck for 10 minutes each morning, then you would probably end up with your neck being a few millimetres longer for a few years. In Lamarckian theory, giraffes stretch their necks to make them longer. It proposes that animals acquire characteristics based on use or disuse during their lives, rather than through hard-coded genetic changes. territories in the Pacific and Caribbean.Lamarckism is a theory named after French naturalist Jean-Baptiste Lamarck (1744-1829). and Canada are home to about 45 species of bats and additional species are found in the U.S. Bats range in size from the Kitti’s hog-nosed bat (also called the Bumblebee Bat) that weighs less than a penny - making it the world’s smallest mammal - to the flying foxes, which can have a wingspan of up to 6 feet. The difference in size and shape are equally impressive. Bats can be found on nearly every part of the planet except in extreme deserts and polar regions. There are over 1,400 species of bats worldwide. Check out some interesting bat facts (and cool photos) below.ġ. From pollinating our favorite fruits to eating pesky insects to inspiring medical marvels, bats are heroes of the night.īat Week - held the last week in October - celebrates the role of bats in nature and all that these amazing creatures do for us. They’ve been called creepy, scary and spooky, but bats are an important species that impact our daily lives in ways we might not even realize.
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