Historically, the use of wells appears in the . A)
Old Stone Age
B)
New Stone Age
C)
Bronze Age
D)
Iron Age
E)
Copper Age
Historically, the use of wells appears in the .
A)
Old Stone Age
B)
New Stone Age
C)
Bronze Age
D)
Iron Age
E)
Copper Age

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature above 37 degrees celsius (98.6 degrees f)? describe what might happen if the temperature decreased by 10 degrees celsius.

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Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home.what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point