Answer: Hepatitis B virus is a virus which is partially ds DNA ( double-stranded) virus, which is a species of the genus Orthohepadnavirus. This virus causes the disease known as hepatitis B, which is a liver infection caused by hepatitis B virus. When this infection becomes chronic there is a chance of liver failure, liver cirrhosis and liver cancer. This disease can be cured if taken proper medication and prevention on time.
Science was needed to make technology and technology helps make scientific advancements. Ex- looking at a blood cell through a microscope to find s cure for a virus.
Ex- someone had to build a telescope using science to see the stars.