There are many conservation issues, desertification, erosion, ecocide, coral reefs, biodiversity threats and losses defaunation etc.
Eukaryotes have their DNA inside a nucleus while Prokaryotes just have it floating inside themselves
They are called even-aged
hope this helped :)
Glassy, because luster refers to its ability to shine/sparkle etc
could use less heat and air conditioning, lighting, electronics in our homes. Drive gasoline cars less often, and walk more. stop buying new clothes as much, and recycling used. use renewable energy sources like wind and solar power.