What are the five major environmental problems?
Over the past few decades, we’ve learned that plastic pollution is a major threat to our oceans. According to a 2015 study, there are 5.25 trillion pieces of plastic floating around, which equates to 720 pieces for every person on the planet. This plastic weighs more than 225,000 tons. Another study puts the number between 15 and 51 trillion particles, most of them very small. But debris of any size—from discarded fishing nets to the smallest particles—can harm marine life when animals become entangled or mistaken for their food.
However, while plastic pollution is among the most serious threats, the biggest problem may be how it relates to all the other pressures on ocean health. These threats include climate change, acidification, ocean warming, overfishing, and habitat destruction. The real problem facing the ocean is a combination of human influences and our lack of will to address them. Eriksen, M. et al., 2014. Plastic Pollution of the World’s Oceans: Over 5 Trillion Pieces of Plastic Weighing Over 250,000 Tons Float in the Sea. Available here Worm, B. et al., 2017. Annu. pastor. Environment. Resur. 2017. 42:1-26 Available here. United Nations Environment Programme, 2016. Marine Plastic Litter and Microplastics – Lessons and Global Research to Drive Action and Guide Policy Change. United Nations Environment Programme, Nairobi Halpern, b. S. et al., 2008. A global map of human impact on marine ecosystems. Science 319, 948. DOI: 10.1126/science.1149345 The following graphs are extracted from: UNEP and GRID-Arendal, 2016. Marine Debris Vital Graphics. UNEP and GRID-Arendal. Nairobi and Arendal. www.unep.org, www.grida.no Most types of plasticizer animals – ingestion Estimated amount of plastic in the oceans and where it could be What types of plasticizers are – entangled Share the message and help GRID-Arendal stop others from talking about marine litter. Feel free to use the social tabs below and don’t forget to tag @GRIDArendal #BeatPlasticPollution
global warming from fossil fuels
At time of publication CO2 is ppm (ppm) at 418 and high The global temperature is 1.1°C compared to pre-industrial levels.
The last time carbon dioxide levels on our planet were as high as they are today was more than 4 million years ago. Increasing greenhouse gas emissions have led to a rapid and sustained rise in global temperatures, which in turn is causing catastrophic events across the globe – from Australia and the US experiencing some of the most destructive bushfire seasons ever, to locusts ravaging parts of Africa, the Middle East Central and Asia, decimated crops and a heatwave in Antarctica where temperatures rose above 20 degrees for the first time. Scientists constantly warn that the planet has passed a series of tipping points that could have dire consequences, such as advancing thawing of permafrost in Arctic regions, melting of Greenland’s ice cap at an unprecedented rate, acceleration of the sixth mass extinction and increased deforestation in the Amazon rainforest. , For example, but not limited.
We mentioned planting more forests above, and unfortunately at a time when we need more forests, trees are being cut down at an alarming rate. Deforestation is a rapidly growing problem in regions such as Africa and Central and South America. Not only does this mean fewer trees, and less oxygen for wildlife to hunt and transport, deforestation means a serious decrease in nature’s resistance to global warming – there is no threat. 1 on our land now. Removing trees also results in a drier climate, as trees draw in groundwater to release into the air.
Our tropical rainforests, which are essential to climate stability and human survival, are being cut down at breakneck speed – one and a half hectares of rainforest are being lost every second. Humans have already cut down about 50% of the rainforest that once existed on the planet, and at the current rate of destruction, we will completely destroy the rainforest in the next 40 years. If rainforests are so important, why are they so carelessly destroyed? Short-sighted governments and multinational logging companies see logging as a way to make money by selling timber – they don’t consider the long-term effects. (texajp_7)