"two major causes" is an acceptable way to phrase something in written English.
It is often used to refer to two key reasons for something happening. For example, "There are two major causes of global warming - the burning of fossil fuels and deforestation."
Zahi Khouri ("The West Bank's deceptive growth," Views, Sept. 9) ignores two major causes of Palestinian stagnation: violence and corruption.
Infection with the bacterium Helicobacter pylori and long-term use of nonsteroidal anti-inflammatory drugs (NSAIDs) are the two major causes of ulcers.
Evidence now indicates that infection with the bacterium Helicobacter pylori and long-term use of nonsteroidal anti-inflammatory drugs (NSAIDs) are the two major causes of peptic ulcer.
AIDS and tobacco use, the study said, are the only two major causes of death that are on the rise, with tobacco projected to play a role in perhaps eight million deaths in a little over a decade.
While the study was observational, which means firm conclusions cannot be drawn about cause and effect, it suggests that addressing loneliness could pay a major role in tackling the two major causes of death in wealthy societies.
Loneliness and social isolation have been linked to a 30% increase in the risk of having a stroke or coronary artery disease, the two major causes of death and illness in wealthy societies.
For the fynbos, invading alien plants particularly various species of Australian wattle trees (acacia)—and the conversion of natural areas to agriculture are the two major causes of species extinction and endangerment.
There are two major causes of uncertainties in h'F.
Population growth and urbanization in Lahore are the two major causes of vegetation loss.
Tillage and weed infestation are the two major causes of low yield, decreasing the wheat yields by 50 80%.
As pressure increases gradually, differential strain and small grain size are two major causes of peaks broadening [17].
