Answer:
<u>Relative dating</u>
Explanation:
Usually the age of formations of a rock is categorized in a geologic time scale.
There are two different types of geologic time scale;
a. Relative dating sequence
b. Absolute dating sequence
The correct sequence from bottom to top is the relative time dating. The Relative dating shows rock ages in their order of occurrence (from Bottom to Top).
These are examples of relative dating sequence:
- Superposition,
- Crosscutting Relationships,
- Sequence from bottom to top,
- Inclusions,
- Faunal Succession.
Answer: Carbon Dioxide
Explanation: Soil aeration is the process that provides the air to the plants and maintains the flow of oxygen and carbon dioxide gases. These are the two most vital gases for the life process of the soil to provide it to the plants and other micro organisms. It provides these gases so that there can be production in the plant through soil.