If the connection between the sa node and av node becomes blocked,
a) the ventricles will beat faster.
b) the ventricles will beat independently of the atria.
c) the ventricular rate of contraction will not be affected.
d) the stroke volume will increase.
e) tachycardia will occur.

mammal

explanation:

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

the answer is 95 degrees

bradykinin is a physiologically and pharmacologically active peptide of the kinin group of proteins, consisting of nine amino acids.