Wind observations are measured in two ways .... wind speed and wind direction. Where possible measuring devices should be in a large open area away from possible interference such as building, trees etc.
Electron transport system. Definition. noun. A sequence of redox reactions wherein the transfer of electrons from an electron donor to an electron acceptor is coupled with the transport of protons across a membrane to generate a proton gradient that drives ATP synthesis.
Active transport (def) is a process whereby the cell uses both transport proteins and metabolic energy to transport substances across the membrane against the concentration gradient. In this way, active transport allows cells to accumulate needed substances even when the concentration is lower outside.