Name the two sources of blood supply to the liver.

The death of the muscle fibres of the heart due to reduced blood supply to the hearts is called.................

Name the main sources of air pollution.

Atheroma may partially block the ............ and reduce the blood supply to the heart.

Name three natural sources of air pollution.

Name the main sources of carbon monoxide pollution.

Name the plant source of Cannabinoids. What are natural cannabinoids and give its effects?

(a) Name the main two components of blood. (b) What does plasma contain?

Name the plant source of cocaine? How does it affect the human body.

Name the plant source of Cocaine and Heroin.