What do global problems mean? Which are global problems that organisms are facing today?

Global problems are important problems that directly affect not only an individual man, but also affect the whole planet and potentially all the organisms living on it. Climate change, depletion of ozone and global warming are the best examples of global problems. Other global problems that organisms on the earth face are, loss of biodiversity and ecosystems, depletion of fisheries, deforestation, water deficits, waste water disposal, marine safety and pollution. Human activities like deforestation, pollution and population makes the things worse.