How many microbes in a teaspoon of soil

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

How do the evolutionary chart and the video support the claim that all living things are made up of cells?

How do water’s relative densities as a solid and a liquid differ from that of most other substances? water’s solid and liquid forms have different densities, while most other substances have solid and liquid forms with similar densities. water’s solid and liquid forms have similar densities, while most other substances have solid and liquid forms with different densities. water’s liquid form is less dense than its solid form, while the opposite is true of most other substances. water’s solid form is less dense than its liquid form, while the opposite is true of most other substances.