Please help I dont understand and it will be nice for someone to help A bowling ball sinking and a ping pong ball floating in water are examples of which kind of property?
a. mass
b. density
c. length
d. weight

Which pattern most likely came from a gunshot and which one was produced from a blow on the head? explain your answer?

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

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection