Moisture - water in small drops on a surface, in the air, etc. Humus - a substance made from dead leaves and plants, that you put into the ground to help plants grow Manure - the waste matter from animals that is put on the ground in order to make plants grow better Bubble- a ball of air or gas, in liquid or floating in the air

Air - the mixture of gases that surrounds the earth and that people, animals and plants breathe Wind - air that is moving across the surface of the earth Breeze -  a light wind Humus - a substance made from dead leaves and plants, that you put into the ground to help plants grow

Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life.

Humus - a substance made of dead leaves and plants, that you put into the ground to help plants grow Manure - the waste matter from animals that are put on the ground in order to make plants grow better Bubbles - a ball of air or gas, in liquid or floating in the air Moisture - water in small drops on a surface, in the air, etc.

Any usage of chemicals has a bad impact on the quality of the soil.

Global warming is caused due to air pollution.

Humus - a substance made of dead leaves and plants, that you put into the ground to help plants grow Manure - the waste matter from animals that are put on the ground in order to make plants grow better Moisture - water in small drops on a surface, in the air, etc. Bubble - a ball of air or gas, in liquid or floating in the air

Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life.

Soil - The unconsolidated mineral or organic material on the immediate surface of the Earth that serves as a natural medium for the growth of land plants.

Humus - a substance made from dead leaves and plants, that you put into the ground to help plants grow Soil - Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life. Manure - the waste matter from animals that is put on the ground in order to make plants grow better Moisture - water in small drops on a surface, in the air, etc.