No lungs, no gills: how do insects breathe?

They may make your skin crawl and you might wish to think of them as a lower life form, but insects have a remarkably elegant and simple way of delivering oxygen to their body and removing the carbon dioxide waste. Insects have a tracheal system rather than the complex respiratory (lungs and stuff) and circulatory…

Insect Breathing

How Do Insects Breathe and Do They Have Lungs?

Science Sunday: How Giant Water Bugs Breathe

What conditions on earth caused creatures to be so large in the

How do insects breathe? Part 2: Parasites

How Do Insects BREATHE? Earth Unplugged

Animal Gas Exchange and Transport

Why did things shrink? Ancient fossils are absolutely huge. I've

Why were organisms so large in the past? - Quora

Nature's Scuba Divers: How Beetles Breathe Underwater

Pill bugs emerged from the sea to conquer the Earth

Spiracle: Types, Functions, Examples & Tracheal System

Why have sea creatures been so much larger in size than creatures