Deep-sea sediment cores can provide a climate chronology going back as far as years.

Sea sediments refers to any dump or material put into ocean which is insoluble, normally that is rocks or particles of soil which are transferred from the earth surface to the sea via winds, storms or other mediums which may include oceanic materials that makes layer upon layers.

economic

every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

hope this !