many animal populations facing threats

endanger Hide phonetics
verb [T]
to put someone or something at risk or in danger of being harmed, damaged or destroyed:
He would never do anything to endanger the lives of his children.
We must be careful not to do anything that might endanger the economic recovery.
extinct Hide phonetics
adjective
1 not now existing:
There is concern that the giant panda will soon become extinct.
Many tribes became extinct when they came into contact with Western illnesses.
A lot of trades have become extinct because of the development of technology.