The answer is B. fight disease
The testes lie between the thighs, in a pair of pouch-like sacs called scrotums or scrotal sacs. The scrotums are outside the main body cavity and thus are at a slightly lower temperature than body temperature.The lower temperature is essential for the sperms to develop properly.
Metabolism is not found in the prokaryotic cell
We can reduce air pollution by using public transport instead of private vehicles when possible, this can reduce the gas released from private cars. We can reduce energy consumption by setting air conditioner to a suitable temperature such as 26°C or use fan instead. Also make sure we turn off all the electrical appliances when we leave a place.
