Ключевые слова: app, biological, biotechnology, botany, carbon, chamber, circulation, control, cycle, device, dioxide, energy, environment, equipment, exchange, gas, gas exchange, glass, green, growing, h2o, handheld, indicator, instrument, intensity, leaf, light, machine, measuring, method, monitoring, o2, oxygen, photosynthesis, plant, poplar, portable, process, reaction, science, scientist, stomatal, technology, temperature, test, tool, transpiration, water, worker,