Question: Amensalism is the type of relationship that exists where one species is inhibited or completely obliterated and one is unaffected. This type of symbiosis is relatively uncommon in rudimentary reference texts, but is omnipresent in the natural world.[citation needed] There are two types of amensalism, competition and antibiosis. Competition is where a larger or stronger organisms deprives a smaller or weaker one from a resource. Antibiosis occurs when one organism is damaged or killed by another through a chemical secretion. An example of competition is a sapling growing under the shadow of a mature tree. The mature tree can begin to rob the sapling of necessary sunlight and, if the mature tree is very large, it can take up rainwater and deplete soil nutrients. Throughout the process the mature tree is unaffected. Indeed, if the sapling dies, the mature tree gains nutrients from the decaying sapling. Note that these nutrients become available because of the sapling's decomposition, rather than from the living sapling, which would be a case of parasitism.[citation needed] An example of antibiosis is Juglans nigra (black walnut), secreting juglone, a substance which destroys many herbaceous plants within its root zone.
Try to answer this question if possible: What secrets juglone, a substance which enhances many herbaceous plants within its root zone?
Answer: unanswerable
Question: Since regaining independence, Estonia has pursued a foreign policy of close co-operation with its Western European partners. The two most important policy objectives in this regard have been accession into NATO and the European Union, achieved in March and May 2004 respectively. Estonia's international realignment toward the West has been accompanied by a general deterioration in relations with Russia, most recently demonstrated by the protest triggered by the controversial relocation of the Bronze Soldier World War II memorial in Tallinn.
Try to answer this question if possible: What were the most important foreign policy priorities?
Answer: accession into NATO and the European Union
Question: Software faults occur through the following processes. A programmer makes an error (mistake), which results in a defect (fault, bug) in the software source code. If this defect is executed, in certain situations the system will produce wrong results, causing a failure. Not all defects will necessarily result in failures. For example, defects in dead code will never result in failures. A defect can turn into a failure when the environment is changed. Examples of these changes in environment include the software being run on a new computer hardware platform, alterations in source data, or interacting with different software. A single defect may result in a wide range of failure symptoms.
Try to answer this question if possible: What can a single defect not result in?
Answer: unanswerable
Question: On January 21, 2014 IBM announced that company executives would forgo bonuses for fiscal year 2013. The move came as the firm reported a 5% drop in sales and 1% decline in net profit over 2012. It also committed to a $1.2bn plus expansion of its data center and cloud-storage business, including the development of 15 new data centers. After ten successive quarters of flat or sliding sales under Chief Executive Virginia Rometty IBM is being forced to look at new approaches. Said Rometty, "We've got to reinvent ourselves like we've done in prior generations."
Try to answer this question if possible: IBM committed to an expansion totaling this dollar amount in 2014?
Answer:
$1.2bn