By: Rex Trulove
Like most true flies, mosquitoes require a great deal of protein in order to breed. This is particularly true of females.However, since the species has a short life, much of it aquatic, evolutionary processes took a side step. Rather than developing complex systems for...
Is sex necessary for reproduction?
By: Jennifer Allsbrook
Sex. Copulation. Coitus. Intercourse. All are synonyms for the act that delivers sperm, the male sex cell, into the body of a female. This, however, is only one strategy used by organisms to reproduce. Reproduction is one of the most fundamental characteristics of life and...
A look at animal social groups
By: Anelisa
"Man and wolf are the two most social of all terrestrial mammals. In wolves, family ties are valued above all." So says author, W. Wood. Wolves were greatly respected by Native American hunters as were eagles and bears. They wanted to capture the strength...
The Reproduction of Tigers
By: Anelisa
Tigers mate any time during the year so says the Wildlife Fact-File. The female leaves urine deposits and scratch marks on trees to show that she is ready to mate. The tiger's range is vast in Siberia so it is quite a challenge for the...
Polar bears and their migratory motivators
By: Anelisa
"The huge polar bear is one of the largest land carnivores in the world. Its coat, which varies in color from pure white to shades of yellow, blends in well with its snow-covered environment." (Wildlife Fact-File) We humans are so very drawn to the...
Kin recognition in various animal species
By: Anelisa
The beach was covered with the heads of jellyfish. Its tentacles were removed and the vast beach looked like the planet Mars with little spaceships which had landed and were to stay. We immediately told our son and daughter to not touch any of them...
Biological success: Examples from the animal kingdom
By: Anelisa
"The sea horse is a member of the pipefish family. Swimming upright-and looking a little like a chesspiece-it is a graceful inhabitant of the warmer seas." Wildlife Fact-File When our kids saw a seahorse while swimming in the Atlantic, they were so very excited...
Polar bears and their migratory motivators
By: Jared Hansman
Adaptive Traits of thePolar Bear(Ursus maritimus)3/14/08 Throughout life's long history evolution has been demonstrated over and over again. Competition for resources and geographic and climatic changes have lead to natural selection, which since the beginning of time has molded our world into what it is...
Arachnids: Zebra spiders
By: Jonte Rhodes
The zebra spider is one of the most common spiders in the world, and is probably the best known amongst the jumping spider family. It can be found in almost every climate and is a common sight in warm weather in and around the home...
Arachnids: Cellar Spiders
By: Jonte Rhodes
Cellar spiders belong to the group of spiders known as the Pholcids, and are among the most numerous in the world. They also go by several different names depending on where you are in the world, often being referred to as daddy longlegs in the...

 

1 33 34 35 36 37 99