What is the source of cocaine?

What is the source of proteins ? What are they made up of?

What is the source of a magnetic force in a current carrying wire?

What is the source of EM waves?

Answer in one sentence : What is the source of nuclear energy in our sun ?

What is the source of energy for the life in deep ocean tranches where sunligh does not reach?

What is the main source of water for plants?

Animal Husbandry : What is the source of silk thread?

Diagram based question: Observe the figure and write the answers to the questions asked. What is the source of these fungi?

What are the sources of genetic variability?