Just 1 question please if you know answer I really need it

Why do carbohydrate molecules function so well as fuel for the body?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease