Question

Since the Endangered Species Act of 1973 was passed, about _____ species of animals and _____ species of plants and lichens have been placed on the list of threatened or endangered species

Answer 1

Since 1973, over 4800 species of animals and over 16000 species of plants and lichens have been placed on the list of threatened or endangered species.

Step-by-step explanation:

Since the Endangered Species Act of 1973 was passed, over 4800 species of animals and over 16000 species of plants and lichens have been placed on the list of threatened or endangered species.