Distinguished honor roll requires no grade below a P and at least 1 D.

Quince is resistant to frost and requires a cold period below 7 C to flower properly.

It would require prompt and mandatory reductions by 2012 in gas emissions to levels well below those in 1990.

Complications from that fall required a bilateral, below the knee amputation of his legs in July 2005.

Laparoscopy requires only a small cut below the belly button, which heals quickly.

Avoiding these changes requires, eventually, a reduction in emissions to substantially below present levels.

The federal government requires coverage for families at or below the federal poverty level, about $20,000 for a family of four.

Communications require power levels orders of magnitude below those employed by that device.

They introduced bills that would require Medicaid coverage for pregnant women and infants in families with income below the poverty level.

That first certificated model had an oil cooler which required a separate housing below each engine.