Question

1. what does hydroponics involve?

a. using only natural rainfall

b. growing plants in nutrient-rich water

c. growing plants in sandy soil

d. growing plants without sunlight

Explanation:

Hydroponics is a method of growing plants without soil, using nutrient - rich water solutions to provide essential minerals for plant growth. Option a is incorrect as hydroponics doesn't rely on natural rainfall. Option c is wrong because hydroponics doesn't use soil (including sandy soil). Option d is incorrect as most plants in hydroponics still need sunlight (or artificial light equivalent) for photosynthesis. Option b correctly describes hydroponics as it involves growing plants in nutrient - rich water.

Answer:

b. Growing plants in nutrient - rich water