NEET BIOLOGY

Detailed explanation-1: -Which endangered population in the United States has benefitted from a highly successful captive breeding program? The American bison population at the time of European settlement was estimated to be about 70 million animals. Today the population is approximately 500, 000 animals.

Detailed explanation-2: -The goal of the California Condor Recovery Plan is to establish two geographically distinct self-sustaining populations, each with 150 birds in the wild and at least 15 breeding pairs, with a third population of condors retained in captivity.

Detailed explanation-3: -These birds have been on the U.S. endangered species list since 1967 and were near extinction when their captive-breeding program began. Lead poisoning was a major culprit: Condors were accidentally ingesting fragments of lead-based ammunition as they scavenged on carcasses of hunted animals.