1 mile.
Since he walks at a speed of 2 miles per hour, he will have only walked 1 mile after walking for half of an hour.
The nitrogenous bases (guanine,cytosine,thymine,adenine) code for our traits.
I think its hail ,snow ,high winds
The answer is B, gravitropism. This is a bad question, but I know for a fact that it is gravitropism, and not because I took the same assessment not too long ago (Ahem), lol. I hope this helps!