Bob the blood cell is traveling from the heart of harry, the human he lives in, to take some oxygen to harry's left foot. bob wi
ll take several "highways" to get to harry's foot and then come back home to harry's heart. fill in the missing highway that bob will travel through: artery > arteriole > capillary > ______ > vein.
Trees store carbon dioxide, which is released when cutting them down, burning them or making them into pulp for paper production. And, as you might expect, this contributes to global warming
