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The need for birth control has been a concept for thousands of years and remains an important issue for men and women today, the need for contraception helped humans to achieve control over our population and healthy sexual relationships without having the fear of pregnancy. The medieval contraception methods mostly relies on plant based oral ...


2

Condoms have been around for a long long time. Supposedly, condoms made from such materials as fish bladders, linen sheaths, and animal intestines where in use around 3000 BC (reference). Coitus interruptus was tried before that which may or may not be successful. Infanticide was also practiced where an unwanted child was born in ancient societies ...


1

The disadvantages you mention have not much to do with reproduction, but with locomotion and oxygen absorption. Difficulties to reproduce on land are the fact that aquatic egg-producing creatures typically lay soft eggs with porous shells to promote exchange of water and waste products with the surrounding water. Water is essential for growth as a typical ...


0

Anecdotally I have never observed a preference in lab mice, but we have never made a detailed study of it. Males do not seem to favor non-incestuous over incestuous breeding. Though inbreeding does tend to produce smaller litter sizes over generations and inbred strains of lab mice do tend to be less hearty. Though lab mice are a bit removed from the ...



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