Sentence examples for main natural source from inspiring English sources

Agriculture (barley and to a lesser extent olives, mushrooms, sunflowers, saffron, and fruit) and viticulture predominate in Cuenca, but the main natural source of wealth is timber (pine), used for casks, carpentry, and construction work.

Human populations inhabiting remote coral atoll islands in the tropical Pacific Ocean rely heavily on thin unconfined fresh groundwater lenses (FWLs) as their main natural source of potable water.

C. acuminata is a main natural source of the terpenoid indole alkaloid (TIA) camptothecin (CPT), which was first isolated in 1966 by Wall and coworkers [ 1].

Plants therefore remain the main natural source of active drugs and are still indispensable in traditional medicine for the treatment of a large number of diseases.

The main natural sources of Hg relate to evasion from marine surface waters, biomass burning and volcanoes emission making Hg contamination a global concern.

The main natural sources of metals into the aquatic system are the weathering of soils and rocks and precipitation; or from anthropogenic activities such as industrial, domestic, and urban sewage runoffs (Rippey 1982; Caccia and Millero 2003; Du Laing et al. 2008; Nduka and Orisakwe 2009; Sundaray et al. 2012).

Lipid-rich plants and vegetable oils are the main natural sources of vitamin E. However, levels of the various vitamin E homologs differ substantially between oils [ 23, 24].

Sun exposure, the natural source of vitamin D, is the main risk factor for basal cell carcinoma (BCC) and squamous cell carcinoma (SCC).

Thus, the main natural channels draining into the lake have been changed into a major source of pollutants.

The main purpose of plants was as a source of food and food additive however the plant is also used as a natural source of medicinal agents [ 1].

- Rainfall natural source of water.