Provide the diagram, please
1. B A reduction in competition.
2. C. Respiratory system
The PNS helps to maintain internal balance, or "homeostasis," by the Parasympathetic division of the Autonomic Nervous System (ANS). Sometimes referred to as the "rest and digest" system, the Parasympathetics keep our internal activities regular throughout the day and night, such as a steady heart rate, slow breathing, digestion of food, filtration of blood, and excretion of wastes.
C. Energy can be neither created nor destroyed
An element is also a pure substance. The reason for this is because an element contains only one type of particle.
Option A is correct
