Pacific yew is the source of Taxol, and the rosy periwinkle is the source of vincristine and vinblastine all drugs used to fight cancer.
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Oil is source of just about all economic activity.
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Those in the middle are defined by a relative unpredictability that, in good times, is the source of great optimism, and, in not so good times, is the source of an insecurity that reaches down from the level of personal finance to the level of personal identity.
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This dependence is a cause of some irony: in the case of soybeans, we see that the bad crop has caused distress in China, where the ubiquitous bean is the source of much of its cooking oil and is a cherished food.
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In short, what was once a source of supply is now a source of demand.
But the text never allows that this sin of omission is the source of guilt.
Evergreen funding, like its namesake, is a source of capital that is forever green, in that it is continually replenished.
How much it will cost Fortescue to produce a tonne of ore is the source of much debate in Australia's mining community.
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"Our special relationship with the north east of England is a source of great pride to the company, " said the RSC's artistic director Gregory Doran.
Perhaps it is, in fact, the imprecision of the term "capitalism" that is the source of confusion.
Part of the rationale for big government-sponsored rebates on what is an otherwise uneconomic source of power is the strategic benefit of distributing small-scale power generation across the landscape rather than focusing it in a hulking coal or nuclear plant.
Land, which is a necessity of human existence, which is the original source of all wealth, which is strictly limited in extent, which is fixed in geographical position land, I say, differs from all other forms of property in these primary and fundamental conditions.
The involvement of game designers is a source of controversy both in and outside the school.
But I also say these prayers knowing that the act of prayer itself is a source of strength.
At one end of the tube is a source of ultraviolet light and at the other a detector.
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It's no wonder that his team-mates' lack of professional savvy is a source of extreme frustration to him.
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Private equity funds a substantial amount of new businesses and is the source of capital to rejuvenate failing businesses, which are major drivers of job growth in this economy.
Similar to the confusion and indecision caused by the most baroque Chinese takeout menu, the constant emergence of new marketing technologies is a source of perplexity for brand marketers.
"The initial set of indicators suggests wide variation in both practice and outcomes between maternity units which is a source of concern for the specialty as we cannot be sure that every woman is getting the best possible care, " he said.
"The proliferation of other forms of credit beyond bank lending is a source of growing risk from a financial-stability perspective, " Fitch Ratings said.
"The Welsh language is a source of pride for the country and is cherished by Welsh speakers and non-Welsh speakers alike, " according to the minister.
The issue of illegal migration, and the treatment of Mexicans on the border, is a source of abiding tension between the US and Mexico.
As a remnant of the Persian Empire, the cylinder is a source of pride for Iranians around the world.
Working at the forge since the age of seven, he feels the hammer is the source of his life.
The border truly is a source of strength for both countries, and it is a region that merits investment, support and serious attention from Washington.
That the youth of today is inspired by the real world events around them is of course a source of cheer.
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The ever-nebulous implications of such a far-reaching regulatory scheme is a source of concern for many financial institutions in the U.S. and abroad.
On the other hand, as firms have become more multinational, generating profits worldwide, the claim of any particular tax authority that its jurisdiction is the source of this profit becomes harder to sustain.
"The proliferation of organizations with overlapping oversight and assistance responsibilities is a source of potential confusion among agency personnel and may be an inefficient use of scarce technical resources, " said Jack Brock, director of governmentwide and defense information systems at the General Accounting Office, speaking before Congress in February.
The search for Jeno is a source of both joy and pain for Bodner, but he is committed to finishing it.
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