What is millipascal-second (unit). A millipascal-second (mPaÂ·s) is a derived metric SI (System International) measurement unit of dynamic viscosity.
Types of Ticks Found in the U.S. There are many different species of ticks found around the world but there are five species which are most common. These types of ticks are: Deer Tick (Ixodes scapularis): Also known as the blacklegged tick, the deer tick is most commonly found in deciduous forest areas.
The fossil record suggests ticks have been around at least 90 million years. There are over 800 species of ticks throughout the world, but only two families of ticks, Ixodidae (hard ticks) and Argasidae (soft ticks), are known to transmit diseases or illness to humans. Hard ticks have a scutum, or hard plate, on their back while soft ticks do not.