Browse Reference Articles
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Plant defense against herbivory
Plants have evolved an enormous array of mechanical and chemical defenses against the animals that eat them. These tools allow plants to survive and reproduce in the same area as herbivores and act ... > more -
Dog breeding
Dog breeding is the vocation of mating carefully selected specimens of the same breed to reproduce specific, consistently replicable qualities and characteristics. The skilled breeder has at least ... > more -
Conservation ethic
The conservation ethic is an ethic of resource use, allocation, exploitation, and protection. Its primary focus is upon maintaining the health of the natural world: its forests, fisheries, habitats, ... > more -
Fertility
Pregnancy and Childbirth
Mating and Breeding
Stem Cells
Sports Medicine
Attention Deficit Disorder
Spermatozoon
A spermatozoon or spermatozoan (pl. spermatozoa), and more commonly known as a sperm cell, is the haploid cell that is the male gamete. It joins an ovum to form a zygote. A zygote can grow into a new ... > more -
Organic food
Organic food is produced according to legally regulated standards. For crops, it means they were grown without the use of conventional pesticides, artificial fertilizers or sewage sludge, and that ... > more -
Animal rights
Animal rights, or animal liberation, is the movement to protect animals from being used or regarded as property by human beings. It is a radical social movement, insofar as it aims not merely to ... > more
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