LM of a spruce leaf damaged by acid rain
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LM of a spruce leaf damaged by acid rain
Acid rain effect. Light micrograph of a longitudinal section of a spruce leaf (Picea sp) showing the transition between normal tissue (left) and tissue damaged by acid rain (right). The tissue mostly affected is known as spongy mesophyll. It is found underneath the epidermal layer (pink) and has large intercellular spaces which facilitate the gaseous exchange with the atmosphere for photosynthesis. Acid rain contains high levels of sulphuric and nitric acids and is produced by the reaction of sulphur dioxide and nitric oxide in the atmosphere. The burning of fossil fuels such as carbon is thought to be the main cause. Magnification: x30 at 6x7cm size
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6365457
© PASIEKA/SCIENCE PHOTO LIBRARY
Acid Rain Air Pollution Atmospheric Environmental Pollution Light Micrograph Spruce
EDITORS COMMENTS
This print from Science Photo Library showcases the detrimental effects of acid rain on a spruce leaf. The image, captured under a light microscope, reveals a longitudinal section of the leaf, displaying the stark contrast between healthy tissue on the left and tissue damaged by acid rain on the right. The spongy mesophyll, which is primarily affected by this environmental phenomenon, can be observed beneath the pink epidermal layer. This vital tissue plays a crucial role in facilitating gaseous exchange with the atmosphere for photosynthesis through its large intercellular spaces. Acid rain is formed when high levels of sulphuric and nitric acids combine due to reactions involving sulphur dioxide and nitric oxide in our atmosphere. The primary culprit behind these harmful emissions is believed to be the burning of fossil fuels like carbon. At a magnification of x30 for an impressive 6x7cm size print, this photograph serves as a poignant reminder of how human activities can have devastating consequences on our environment. It highlights the urgent need for sustainable practices that minimize air pollution and protect delicate ecosystems such as those inhabited by spruce trees.
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