By: Janet Grischy
Zookeepers look after zoo animals. They are also responsible for the daily maintenance of their environment. Their job may also include public contact and record keeping too. Zoo keeping is a tough physical job for people who are willing to work hard at tasks that...
Why deer shed their antlers
By: Brenda Nelson
Antlers and horns are two different things. Horns are permanent and grow larger each year, they never fall off except as the result of injury. Antlers grow too, they grow faster than horns and are shed yearly. In a male deers first year of life...
The evolution of the dog
By: Janet Farricelli CPDT-KA
Once upon a time, many eons ago, humans and canines led totally separate lives. The humans hunted using various hand made weapons, and the dogs, reunited in packs, used their powerful teeth. It all stayed this way until towards the end of the Ice...
By: Jobie Weetaluktuk
Crypto means mystery or hidden things and zoology means the study of living things. Cryptozoology was coined by Lucien Blancou to distinguish Bernard Heuvelamns, a French scientist. Heuvelamns thus became known as the "master of crytozoology" in the 1950s'. Cryptozoology is most an amateur science...
By: Tammy T
The name gymnosperm literally translates to 'naked seeds' and gymnosperms are generally understood to be seed-bearing plants that do not flower. There are four classes of living representatives of gymnosperms: Cycadinae, Ginkgoinae, Coniferinae and Gnetinae. Each class is thought to represent a certain stage in...
By: Tami Port MS
Looking for an explanation of the sometimes confusing terms 'diffusion', 'osmosis' and 'tonicity'? Look no further. Each of these concepts, how they relate to each other, and how they play out in both animal and plant cells are detailed below. * What Is Diffusion? *...
Why fish swim in schools
By: Darien Watkins
Why do fish swim in schools? The reason is the same for flocks of birds, stampedes of buffalo, herds of elephants, etc. Animals have been displaying this behavior for millions of years, with many popular dinosaur theories pointing to the fact that many species that...
Explanations of bacterial shape, cell arrangement and colony morphology
By: Tami Port MS
Bacteria are unicellular microorganisms found in every habitat on Earth. Nearly all have cell walls composed of peptidoglycan and reproduce by binary fission (cloning of cells). Although many of these microbes are harmless or beneficial to humans, others are pathogenic, causing infectious diseases. * Identification...
Ribosomes: an explanation
By: Barnabas Stinson
If you've taken a biology course, you've probably heard of these little guys. The name might be familiar, but how exactly do these tiny machines work? What are they for and where do they come from?First let's talk about what a ribosome is. A...
By: Sammy Stein
Imagine a world filled with rotting meat, a world with few flowers, vegetables or fruit, a world which falls silent, stinks and is full of decay. This would be our world without insects. Flowers of any size are made are to attract insects for pollination...

 

1 6 7 8 9 10 372