CurrentdwarfsincreasesNo abstract is available for this article.doi:10.1002/scin.2015.187011015THOMAS SUMNERJohn Wiley & Sons, Ltd.Science News
“Habitat destruction due to human activity—such as logging, farming, and armed conflicts—is pushing giraffe populations to the breaking point throughout the African continent. An ever-expanding human population, largely unchecked due to a huge unmet need for family planning, is having a frighteni...
but the public continues to be deeply divided over both its cause and what to do about it (only 47% say that human activity, such as the burning of fossil fuels, is mostly to blame for the earth
athe increase in CO2 levels in the atmosphere as a result of human activity means that the world is already locked into some climate change, and faces a major challenge to keep global temperature rises to below two degrees. 在二氧化碳水平的增量在大气由于人类活动意味着世界已经是锁着的入一些气候...
Activity ActivityRespiration per Person (m3/h)Carbon Dioxide Emission per Person (m3/h) Sleep 0.3 0.013 Resting or low activity work 0.5 0.02 Normal work 2 - 3 0.08 - 0.13 Hard work 7 - 8 0.33 - 0.38 1 m3/h = 0.5886 ft3/min (cfm) Example - Carbon Dioxide Emission from Persons ...
aIf true, this would imply that CO2 are not important influences on the natural greenhouse capacity of Earth, and that the continuing increase in CO2 due to human activity is therefore not relevant to climate change. 如果真实,这暗示二氧化碳不是对地球自然温室容量的重要影响,因此,并且在二氧化碳的继...
Large, well-documented wildfires have recently generated worldwide attention, and raised concerns about the impacts of humans and climate change on wildfire regimes. However, comparatively little is known about the patterns and driving forces of global fire activity before the twentieth century. Here ...
which is involving in the anaplerotic fixation of CO2 into organic acids, increased. At 100 M Cd, citrate synthase, isocitrate dehydrogenase, and malate dehydrogenase activities increased significantly in leaf extracts, although fumarase activity declined. Membrane damage, electron transport disturbances,...
Here we have overcome these challenges to attribute recent changes in NEL vegetation activity. We used two 30-year-long remote-sensing-based leaf area index (LAI) data sets12,13, simulations from 19 coupled ESMs with interactive vegetation, and a formal detection and attribution algorithm14,15....
aAs for CO2, often the biggest culprit in global warming due to human activities, it turns out that while the amount of the gas released by volcanic activity is large, it by no means compares to the amount released by human activities like the burning of fossil fuels. These activities produ...