scarcity of food

Why do birds have no teeth?
The birds currently living on Earth have no teeth. Let's find out the cause and discover this interesting truth.
Penguins die in mass in Antarctica
The status of mass death of Antarctic penguins is reflected by photographs of Daniel J. Cox photographer, possibly due to climate change or severe food shortage.
How will the earth be destroyed within 500 years?
Current changes are too small for us to fear. However, if we look at another 500 years when the changes become clearer and cause serious consequences, surely we will have to worry