The true meaning of the word "benign" in this sentence is - harmless. It is the word that originates from Latin word "benignus". In medical terms, it refers to something that does not cause death or serious injury. Also, it is most commonly used to describe tumors which are not cancerous. The famous American film director once said: "The most beautiful words in English are not 'I love you' but 'It-s benign'." This word can also be used to describe one's character, meaning that he or she is kind, gentle and that can hardly harm anyone.
Answer:
Kinematics is the study of motion of a system of bodies without directly considering the forces or potential fields affecting the motion. In other words, kinematics examines how the momentum and energy are shared among interacting bodies.
Explanation:
the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion.
Some things you could talk about in your letter are the hazards of litter and polythene. State the reasons why you believe actions should be taken and describe your concerns in your letter. Describe why this is bad for our environment and health. Convince them to see your point of view in the letter by coming from a place of concern, think about health concerns of others. I hope this helps.