Which of the following are called key industry animals?

Which of the following are called as key industry animals?

Which of the following can be called 'animal starch'

Which of the following can be called 'animal starch'

Which of the following is an industrial fuel?

Which one of the following group represents key industries. 1. Crude oil industries 2. Petroleum refining and finished steel 3. Cement and coal

Which are called oviparous animals?

Which are called viviparous animals?

Which of the following is a key function of a firewall?

Which of the following is incorrect about keys?