When were the first laws enacted in the United States to protect farm animals from cruel treatment?

Dangerous organisms that can grow in a variety of environments and are capable of producing toxic substances are known as:

A) toxins. B) bacteria. C) viruses. D) biologicals.

The artery that supplies blood to most of the left side of the interventricular septum is the:

A) posterior descending artery B) anterior descending artery C) marginal artery D) posterior interventricular artery