Scientists have found evidence in the fossil record that the structure of certain animals have changed over time. What is the best explanation of why animal populations adapted over time?. Single choice. Species change because of use or disuse of traits.

Species became extinct and were replaced by better-adapted species.

Fossils remains provide clues as to why certain species have changed over time.

Certain mutations in species have become more prevalent over time through natural sections.

The us council on environmental quality, the world wildlife fund of the united states, the ecological society of america, the smithsonian institution, and the international union for the conservation of nature have proposed four principles of wildlife conservation. which of the following does not apply to wildlife conservation? a) continuous monitoring, analysis, and assessment b) ecosystem maintenance that includes wildlife c) a plan encompassing entire communities of organisms and all renewable resources d) a continued interest in harvesting populations for sport