Trees are very important natural resources. They are the source of food, shelter and habitat. We get various woods, timber , fodder from the forest. Trees hold the soil firmly. Forests helps in conducting water cycle. If trees are cut down then environmental pollution will increase because trees purify the Air. Land pollution , air pollution , water pollution may increase. Biodiversity can be affected.
Answer:
rocks are formed by chemical compositions including the including minerals in the formation, minerals are a solid substance that are present nature and can be made up of one or more elements combined together called Chemical Compounds.
B) they stay the same for many generations
