Day: November 29, 2020

Which factors trigger leaf die-off in autumn?

Researchers at ETH Zurich have identified a self-regulating mechanism in European deciduous trees that limit their growing-​season length: Trees that photosynthesise more in spring and summer lose their leaves earlier in autumn.

Leaves of temperate deciduous trees glow in all their yellow and red glory just before falling, signalling that autumn has come. This process, called leaf senescence, allows trees to prepare for the coming winter by suspending their growth and extracting nutrients from the foliage. In the trees’ phenological cycle, leaf senescence marks the end of the productive period during which they absorb CO2 through photosynthesis.

Leaves change

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Troubleshooting Archos one hundred and one Issues

Looks as if complete world is speaking about 3D this yr, though half of them think 3D is dead earlier than it even started, and the other half knows very well that 3D is solely the following step within the evolution of viewing digital video. Las Vegas physician Dr. Samir Qamar gained the audience over with his MedWand – handheld medical diagnostic device. MedWand accommodates a robust digicam system, pulse oximeter, IR thermometer, stethoscope and ECG all in a single 4-ounce enclosure. Along with the real time remote exams, it may be utilized by residence health care, EMS, hospice and … Read More