Answer:
3. Pathology
4. HCN
Explanation:
Pathology is the study of the nature and causes of diseases.
Answer:
A community is an interacting group of various species in a common location.
Plasma is blood minus the corpuscles. Components of plasma include;
Respiratory gases (oxygen and carbon dioxide)
Nutrients (glucose, amino acids and vitamins)
Proteins (such as albumins and other carrier proteins)
Hormones (such as steroid hormones)
Antibodies and clotting factors
Waste products such as urea
