Join me on my journey of learning to draw as I spend 100 hours improving my skills. This video series covers essential techniques and concepts in drawing, including: - Basic perspective and shadows - ...

This is a preview. Log in through your library . Abstract Science teachers, school administrators, educators, and the scientific community are faced with ethical controversies over animal dissection ...

For this series, we've been thinking a lot about the iconic tools that some of us remember using — if only for a short time — in our early schooling. Things like the slide rule and protractor, the ...

THE rapid advance of physiology and morphology since the completion of Profs. Ecker's and Wiedersheim's “Anatomie des Frosches” has intensified the desire for a text-book which should deal in the most ...

Most female frogs don't call; most lack or have only rudimentary vocal cords. A typical female selects a mate from a chorus of males and then -- silently -- signals her beau. But the female ...

A frog's head can be uniformly smooth on the outside, but spiky and weird on the inside. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Frogs' ...

Most everyone recognizes frogs. Frogs, like salamanders and newts, are amphibians. Unlike salamanders, they have made a major evolutionary detour from the body plan of their ancient ancestors. The ...

While often confused, frogs and toads, both amphibians, exhibit distinct traits. Frogs boast smooth, moist skin and long legs for jumping and swimming, preferring wet habitats. Toads, conversely, have ...