Answer:
Explanation:
A circadian rhythm is a natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours.It can refer to any biological process that displays an endogenous, entrainable oscillation of about 24 hours. These 24-hour rhythms are driven by a circadian clock, and they have been widely observed in plants, animals, fungi, and cyanobacteria.
What determines the carrying capacity of an ecosystem is simply a number out of the population in the ecosystem; whether is be a quarter of it, half of it, all of it, it's a population that can be supported by the the needs of the organisms living in the ecosystem. Say "food", say there is over 300,000 fish in a swamp with 300 gators. Each gator eats 2000 fish a year. There is not enough fish to feed all 300 gators. So let's say the carrying capacity of this ecosystem is 200.
I couldn’t see the options to choose from but that sounds like natural selection.
<span>in the skin the old cells flake off, new cells are replacing them very frequently.
Each time a cell is replaced the cell cycle starts all over again.</span>