Adrenaline is a hormone secreted in the body's effort to slow the heart rate. true false

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

The excretory system,need answers for all: )

Which element is least likely to undergo a chemical reaction