Explanation:
<h2>1.tubberculosis </h2>
prevention: by vaccination
signs and symptoms :fever, chills losing of eating appetite
<h2>2.Hiv and aids</h2>
prevention : abstinence , avoid deep kissing
signs fever, loss of weight
Microscope changed the course of scientific research by enabling scientist to see things and organism that can not be seen by our bare eyes
Answer:True
Explanation:
The correlation coefficient is the strength of the relationship between the relative movements of two variables.
(0 being lowest )(1 being highest)