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 is the movement of molecules across a membrane requiring energy to be expanded by the cell active transport requires energy passive transport is diffusion a cross a membrane requiring only random motion of molecules with no energy expanded by the cell passive transport requires no energy