Why do frogs have green skin? Green vertebrates are generally thought to get their coloration from pigment-bearing cells in their skin. But many tree frogs lack these cells. These frogs are greenbecause their translucent bodies show off blood, bones and other internal tissues that are coloured b...
Why do amphibians not need salivary glands? Why do amphibians have a three-loop circulatory system? Why do amphibians need moist skin? Why can't amphibians live in saltwater? Why is an amphibian's heart not suited for a mammal? Why are animals like frogs called amphibians? What makes amphib...
Oranges are a type of sweet citrus fruit named for the orange color of their skins. Citrus fruits share the common characteristics of segmented fruits contained in thick, waxy skin, grow on trees, and have a high concentration of vitamin C in their fruit....
the resort quickly becomes a backdrop for the wilds just beyond. no sooner do we kick off our shoes and plop down for a bit of reading than we notice a baboon enjoying a sip from our plunge pool. moments later, a gang of his friends make our porch and roof their jungle gym, screech...
Besides algae small fishes frogs larvae floating insects and mosquitoes are also seen. Why does not a duck get wet in water? Why don't ducks get wet? Ducks dip and dive, but they stay dry because they spread oil over their feathers to make them waterproof. What goes up and never comes...
While blueberries contain strong pigments called anthocyanins, these have a deep reddish-purple color, completely different from the indigo shade of the fruit skin. However, like most plants, blueberries are coated in a thin layer of protective wax which acts as a waterproof coating and barrier ag...
Many different theories have been advanced for each: amphibians have thin, porous skin and may not be able to survive the sun’s harsh ultraviolet rays allowed inthrough the thinning protective ozone layeror perhaps they have absorbed more pollutants from the air, land or water than their organs...
Smack in the middle of nowhere, South America our bus ground to a halt. Enter three men: white skin, tanned, steel-blue eyes, and dressed in denim overalls. They looked like they might have walked out of the background ofAmerican Gothic. It was a strange sight to us, but apparently ...
So it seems so far like we do kind of actually understand the brain, right? But then why did that professor ask that question—If everything you need to know about the brain is a mile, how far have we walked in this mile?—and say the answer was three inches? Well here’s the th...
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