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The trend began in 2007, when leading wheat-exporting countries such as Russia and Argentina limited or banned their exports, in hopes of increasing local food supplies and thereby bringing down domestic food prices.

This research may be biased, however, as ill health often makes older people more dependent and thereby increases contact with family members.

Direct subsidies to research and development have been adopted by some governments but are a poor substitute for a carbon price: they do only part of the job, leaving in place market incentives to over-use fossil fuels and thereby add to the stock of atmospheric greenhouse gases without regard to the collateral ( ' , 附带的) costs.

The 2004 Commercial Space Launch Amendments Act, intended to encourage private space vehicles and services, prohibits the transportation secretary ( ' , and thereby the FAA) from regulating the de sign or operation of private spacecraft, unless they have resulted in a serious or fatal injury to crew or passengers.

Direct subsidies to research and development have been adopted by some governments but are a poor substitute for a carbon price: they do only part of the job, leaving in place market incentives to over-use fossil fuels and thereby add to the stock of atmo

Lower reading achievement scores and grades in fifth grade contributed to reduced grades in middle school and thereby contributed to a 40% lower high school graduation rate.

Still, if late sleepers want to lose a few pounds, they can go to bed earlier than they usually do, thereby reducing their chances of taking snacks before bedtime.

The 2004 Commercial Space Launch Amendments Act, intended to encourage private space vehicles and services, prohibits the transportation secretary and thereby the FA from regulating the design or operation of private spacecraft, unless they have resulted