Question

1. what are the four components of blood?

contains all other components
contain hemoglobin.
fight against infection.
cause blood clots to form.

Explanation:

Blood is composed of four main components. Plasma is the liquid part that contains all other components. Red blood cells contain hemoglobin which helps in oxygen transport. White blood cells fight against infections. Platelets are involved in the process that causes blood clots to form.

Answer:

Plasma, red blood cells, white blood cells, platelets.