Why do babies have more bones than adults? Why are some animals cold-blooded? Why are wetlands important to amphibians? Why can't cold-blooded animals produce heat? Briefly describe the ways desert reptiles con
They change shape and color, and squirt ink. But they also will return your gaze, "as if they're scrutinizing you."
Why do humans, animals, and plants have to evolve reproductive function? Is it a survivor bias? Define reproduction and explain how it is important to living organisms. When and why did mammals evolve a complicated and sensitive ...
It’s actually the remnant of a third eyelid. Known as the “plica semilunaris,” it’s much more prominent in birds and a few mammals, and functions like a windshield wiper to keep dust and debris out of their eyes. But in humans, it doesn’t work. It’s vestigial, meaning it no...
Humans have changed the continent's biosystem greatly, as massive forest areas and formerly huge populations of certain animals have reduced to bits and pieces, if even that. However, North America continues to absolutely mop the floor with Europe when it comes to the sheer richness of its anim...
The complexity of multicellularity is contradictory to regeneration and that’s why humans cannot undergo regeneration. However, Planarians which are a group of free-living flat worms, can undergo regeneration. This is supported by the fact that Planarians’ have a simpler and the ability to form...
By intruding into wild areas and exploiting wildlife, we are also giving pathogens such as the virus causing the covid-19 pandemicmore chances to make the jump into humans or domesticated animals.Warming is generally expected to make matters worse, for example by allowing disease-car...
Why was it so difficult for scientists to recognize how plants reproduce? Why did we evolve two kidneys? Why do birds mimic other birds? Why are chimpanzees important? Why do scientists classify organisms? Why do anthropologists study non-human primates? Why can't humans reabsorb endometria?
they were born to lay their own eggs. Salmon swimming upstream is both a form ofmigrationand a way to ensure that their young survive long enough to hatch and grow into adults. The journey is challenging but leads to the successful salmon populations that animals and humans depend on for ...
The rabbit symbolism had its origin in pre-Christian fertility lore, while the hare was the Egyptian symbol of fertility. The ancient Greeks thought that rabbits could reproduce as virgins, and in the early medieval times, the rabbit became associated with the Virgin Mary and commonly appeared in...