Answer:
2. The bottom layers of the rock could have formed before life occurred.
Explanation:
The bottom layers of the rock could have formed before life occurred because there is no fossil is present. If there is life at that time so the fossils are present at the bottom layer so the absence indicates that is no life present at that time. The bottom layer is older than the upper layer so that's why fossils of bacteria are found in the upper layer of the rock.
Answer:
Chemical compound, any substance composed of identical molecules consisting of atoms of two or more chemical elements
Explanation:
Answer:
Study changes in an ecosystem using satellite imagery.
Explanation:
A geographic information system (GIS) is a system that is designed to gather, manage and analyze data. These systems are used by geographers, and it allows them to integrate many different types of data, particularly spatial data. Therefore, this system can be used in the development of maps, 3D scenes, and visualizations. Therefore, it would be a useful tool to have when studying changes in an ecosystem using satellite imagery.
May 12, 2008
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Tectonic plates are a part of the A) mantle.