Answer:
atomic number or atomic mass
The staircase line indicates the position of the metalloids in the Periodic Table.
The three parts of amino acid are, the carboxyl group, amino group, and the R group.
Answer:
Explanation:
A.
The skeletal system reacted involuntarily and moved when acted upon by nerve impulse.
B.
The circulatory system worked to provide energy for the action to be completed and the respiratory system provided oxygen to the working muscle.
C.
The immune system had no immediate contribution to the action, but had been vital in preserving the body systems so thay they would be prepared to work in concert to produce the acton.
D.
The nervous system initiated the action. The nervous system transmitted the impulse need for the knee action.
E.
The doctor's nervous system and muscular systems worked together to produce the movement need to tap the patient's knee.
It creates a magnetic field around the Earth.