Question

1Choose the correct option Humus supplies ________________ to the soil. *
• .Fossil
• . fuels Nutrients
• .Crude oil
2.Which gas is used in the flash photography?​

Answer 1

Answer:

Crude oil

Argon flash, also known as argon bomb, argon flash bomb, argon candle, and argon light source, is a single-use source of very short and extremely bright flashes of light. The light is generated by a shock wave in argon or, less commonly, other noble gas. The shock wave is usually produced by an explosion.

Explanation:

Hope you understand