If iron absorbs 315000 J of energy going from 20 o C to 90 o C, what would its mass be? 10
0.1
992250000
49000​

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth

The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.

Animals that have thick fur and ae able to store large amounts of body fat live where ?