With this worksheet, your student will learn all about how the tides work, and he will be able to practice graphing some data on high tide and low tide activity. Download Worksheet.
Network interface device. In telecommunications, a network interface device (NID; also known by several other names) is a device that serves as the demarcation point between the carrier's local loop and the customer's premises wiring.
Steroids have two principal biological functions: certain steroids (such as cholesterol) are important components of cell membranes which alter membrane fluidity, and many steroids are signaling molecules which activate steroid hormone receptors. steroid is an organic compound with four rings arranged in a specific configuration.