Select the correct answer from each drop-down menu : Compared to modern Earth, Precambrian Earth's atmosphere and oceans were much richer in
because it was so prevalent in
.

A. carbon dioxide, oxygen, salt

B. volcanic gas, single-called organisms, crustal rock

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.

3differences between bacteria and other 2 cells

Besides regulating what enters and leaves the cell, what is another function of your choice from question #1?