Plants can detect what about light?
A、Direction
B、Intensity
C、Wavelength
D、All of the above
A、Direction
B、Intensity
C、Wavelength
D、All of the above
A、To amplify electron signal via electron multiplication
B、To compensate negative charges deposited on samples by electron beams
C、To limit desorption of water in biological samples
D、To provide high contrast images and eliminate conductive coatings at observation of insulating samples
E、All above
A.Attention.
B.Softness
C.confidence
D.interest
A、Water
B、Oxygen
C、Proper temperature
D、Soil
A、Stimulate phototropism
B、Stimulate cell differentiation
C、Promote seed germination
D、Stimulate stem elongation
A、Water stress
B、Salt stress
C、Cold stress
D、Heat stress
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