What are the structures and functions of the circulatory system

The population of bacteria in a petri dish doubles every 40 seconds. the population of the bacteria is initially 400 organisms. what unit is most appropriate for the time at which the number of bacteria is 300? hour bacteria per hour second bacteria per second

What role do bacteria play in the carbon cycle

Indica el nombre y la fucion de los vasos sanguineos que entran y salen de los riñones