Which of these locations on earth experiences at least change in the number of daylight hours throughout the year?
a. north pole
b. terrestrial equator
c. tropic of capricorn
d. tropic of cancer e) south pole

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.

20 the compound al(nh3)2 has atoms of nitrogen.

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound