Sustainable change will take five to seven years if it happens at all.

Fertilizers are chemicals added to plants to help them grow. Important elements in fertilizers include nitrogen, phosphorus and potassium. Manure (animal waste) is also used as a fertilizer.

Plant matter found at the bottom of areas with water such as swamps can eventually turn into coal due to a process called metamorphosis (changing form).

In the agricultural industry, to ensure crops of food grow well water is often added to soil in the form of irrigation.

Tree resin which has been fossilized is known as amber, it sometimes contains plant material or small animals that were trapped inside.