The first one is b
Question 10 is Heart rate
Question 12 is perimeter
Thats all i know sorry
I personally think narrow hand placements are harder for push ups than the wide medium hand placements for push ups. I think that both of the different hand placements uses different muscles, which may be why I feel that the narrow hand placement is harder. Hope I helped!
<span>It is volcanic mud-flow. These mud-flows also known as Lahars are made up of debris and mud. The debris typically consists of rock fragments. The size and speed of the mud-flow can increase as it rolls downstream and incorporate more material as spreads such as rocks, buildings and soil.</span>
