Question

Scientists estimate that the fossils found so far represent probably ____ of all species that have ever lived.

Answer 1

1%

Step-by-step explanation:

The number of species known about through fossils is less than 1% of all species that have ever lived. Because hard body parts are more easily preserved than soft body parts, there are more fossils of animals with hard body parts, such as vertebrates, echinoderms, brachiopods, and some groups of arthropods.