The lungs have millions of tiny air sacs called alveoli. If they become damaged the body can never repair or replace them. Once the damage is done, it is that way for life.
alveoli
Humans live longer so they have more rime to grow and ducks grow quickly because ducklings have more preditors than the adults.
nucleus.nucleolus and chromosomes to be more specific.
yes 3 times faster
trillions there isn't an exact number because as we grow we get more cells
cockroaches can not grow to the size of an human body that would be immposible
The human population began to grow exponentially in the modern age due to civilization. This resulted to less working times and more resting periods with improved means of cultivation which produce more food for the increasing families.
The more we grow, the more we cut into resources and habitat, taking these away from other species.
No, it is one part of the human bady that does not grow but the human eyeball does not grow either.
You can grow probably more than an inch if you total up the lengths that each of your hairs grow. A single hair, growing an inch in a week, would not be realistic for a human, though.
I guess they don't heal, more or less grow out. whiskers are just like human hair, they grow back to original length if damaged
No. Spleen nodules cannot grow in human or any other lungs. Spleen nodules grow on the spleen. There are nodules that do grow in the lungs, however.