When a volcano erupts, particles of rock and ash are released into the atmosphere. after this, water droplets form around the rock and ash particles and fall to earth as rain. the rainwater plants grow. true or false?

TRUE

Explanation:

Rainwater is comprised of both oxygen and carbon dioxide which is essential for the growth of plants, and is acidic in nature. During the time of occurrence of rainfall, the rainwater gets mix up with the soil, and helps in releasing the essential micro-nutrients such as zinc, iron, copper into the soil and thereby enhances the growth, development and expansion of plants.

In addition to this, rainwater also helps in leaching the salt concentration downward into the deeper root zone, which obstructs the growth of plants.

Thus, the given statement is true.

the wrong statement is - c. a desert had more biodiversity than a marsh.

the deserts are one of the places of the planet where there's the least biodiversity. the reasons for that are the climate and the lack of food sources, which hampers both the number of the species that can survive in it, and the number of the individuals in the species itself.

the marshes, on the other hand, are places where there's perfect conditions for lots of organisms to thrive. the temperature is moderate and nice, the amount of water and the food sources are on a high level, so there's an abundance of both plant and animal life in them.