How is it that a dna coding system with only 4 bases can yield so many possibilities? also, how many unique coding sequences can there be with a dna code that is 8 base pairs long? hint: 4n combinations.

i am going to guess that it is co2.

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

the correct option is option d

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.