Question

Fill in the blanks with the correct form of verbs:-

Plastic bags _________ (cause) great harm to the environment. They are ___________ (make) up of polyethylene – aby-product of oil refining and can take up many years to decompose.​

Answer 1

Answer:

Plastic bags causes great harm to the environment. They are made up of polyethylene – aby-product of oil refining and can take up many years to decompose.

Explanation:

Hope it helps.