Answer: The lungs are well supplied with blood due to lots of capillaries covering the alveoli, constantly maintaining a large diffusion gradient, air is able to pass easily down this gradient due to the alveoli having very thin walls (one cell thick).
or
The alveoli are adapted to make gas exchange in lungs happen easily and efficiently. Here are some features of the alveoli that allow this: they give the lungs a really big surface area. they have moist, thin walls (just one cell thick)
Hope this helps......... Stay safe and have a Merry Christmas!!!!!!!!!!! :D
Explanation:
Has an increased chemical reactivity;it is primed to do cellular work should be your answer have a very nice day <span />
"C" Climate change, because if the past time had more hurricanes than in these times, then the weather has changed. .
Answer:
Because that's what they are made of.
A nucleic acid is made up of nucleotides, and nucleotides contain....
- a pentose sugar (carbs)
- nitrogenous base (ATCG)
- phosphate group
I don't know if you mean, what should viruses have to be living, if it's so :
They must be cellular, meaning they should have a cytoplasm a cell membrane and some organelles (at least ribosome).
But if you mean to say what in common they have with livings:
I can say that they have DNA, thats common both with viruses and livings.
