The 1918 flu pandemic, commonly referred to as the Spanish flu, was a category 5 influenza pandemic caused by an unusually severe and deadly Influenza A virus strain of subtype H1N1.
Project Lead The Way (PLTW) is an American nonprofit organization that develops STEM curricula for use by US elementary, middle, and high schools.
plow verb (INVEST) âº [T always + adv/prep] to invest money in a business to make it successful: If weâre hit by higher taxes, weâll have a little less to plow back into the business. plow verb (TOOL) âº [I/T] to dig into the earth with a large farming tool to make the earth ready for planting, or to move snow or sand away from an area with a large, curved blade fixed to the front of a vehicle: