Because evolution itself is a very slow process. Having said that, the chance of having a continuum of various animals would mean that evolution would have progressed very fast. Because evolution is slow, different species establish themselves for different ecological niches and environments, this enables them to become better through time at a certain environment which then leads to eventual diversification in the number of species.
The structures that are responsible for producing semen are within the make reproductive system. these include the testes, epidymus, prostate, seminal vesicles, and the bulbourethral gland.
The optimum temperature for growth of e. coli bacteria is around 37 degrees celsius and 98.6 degrees fahrenheit.
Ligaments connects bones together to form a joint...
this is any help?
