If your training program is focused on improving how well your heart and lungs work together to supply oxygen your body during exercise, what health related factor are you targeting? a.) coordination b.)cardiovascular efficiency c.)muscular strength d.)agility

I believe the answer is B. Cardiovascular efficiency :)

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there

i don't know im sorry.