all plants use chemicals and nutrients to survive
All organisms rely on chemicals to survive. Water is a chemical.
Some chemicals make plants grow. They are called fertilizers. Some chemicals plants make plants die. When intentionally applied, they are the type of pesticide called herbicides. Some chemicals do not affect plants.
Plants survive in land by the water
Is chemicals from plants chemical weathering or physical weathering
Tropisms are plant's response to a particular stimulas. Tropisms demostrate that plants can response to light, water, gravity and chemicals. We, humans know what we want and with our knowledge we seek for it. Unlike humans, plants doesn't know what they want and how to look for it. So plants response to stimulus in order to get what they want and to survive. Plants turn towards light in order to make food. Tropisms helps plants to survive as plants cannot move and has no knowledge.
Without sunlight, plants can not survive.
Animals and human beings take many benefits from plants. Plants help absorb the chemicals in the air that are harmful to us and release fresh oxygen in return. They also provide food for animals and sometimes humans, too.
by putting a water to the plants
Yes, plants release chemicals for self-defense to deter herbivores, pathogens, and competitors. These chemicals can be toxic or distasteful to deter predators or inhibit the growth of surrounding plants.
from chemicals in the ocean
Chemicals contained in allopathy medications, when not synthetized, are largely extracted from plants.