Your GIF Guide To How Muscles Work

How Muscles Work

Now that you know how they work, it’s time to actually use them. In 2011, the Centers for Disease Control found that barely 20% of Americans get recommended levels of exercise, and that over 25% of Americans don’t devote any time to physical activity. Meanwhile, obesity is increasingly becoming a national security issue.

Wild Tiger Populations Greatly Diminished By Poachers

While more than 100,000 wild tigers roamed Asia and surrounding areas 100 year ago, now only as few as 3,200 wild tigers exist. In short, we have lost about 97 percent of the wild tiger population in one century. As with other endangered animals, human expansion, poaching, climate change and illegal wildlife trade all contribute to the rapid decline in tiger populations. Since illegal wildlife markets value every single part of tigers from whisker to tail, poachers continue to capitalize on diminishing tiger populations, killing as many as two tigers a week.

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Are You Smarter Than A Cetacean?

Before we delve into the meat of this issue, here are a couple of terms to familiarize yourself with.

Cetacean: the term “Cetacean” refers to the order of marine mammals ranging from the 200-ton blue whale, to the comparatively tiny 130-pound harbor porpoise, and everything in-between. Cetacea can be divided into two categories: toothed whales, whose best known members include dolphins, porpoises, narwhals, and orcas, and baleen whales like the humpback whale, right whale, and grey whale.

Cetacean Intelligence Chart

It doesn’t matter that you can’t read the species names. Just know that there are A LOT of different kinds of cetacea.
Frontiers Of Zoology

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