Question

in passive voice The world environment Association has listed polar bears as threatened​

Answer 1

Answer:

POLAR  BEARS  HAVE  BEEN  LISTED  THREATENED  BY  THE  WORLD  ENVIRONMENT  ASSOCIATION.

.

Explanation:

Answer 2

$\huge\mathtt{\fbox{\red{Answer}}}$

POLAR  BEARS  HAVE  BEEN  LISTED  THREATENED  BY  THE  WORLD  ENVIRONMENT  ASSOCIATION