A. Improving upon a previous attempt at creating a new union.
The evidence provided by the fossils means that Trilobites became extinct 252 million years ago and lived on Earth more than 521 million years ago.
Basically, a fossil is a remains which gives geologist information about the organism which lived in the past because when those organism dies, they decay and remain on or in the earth surface
Since the trilobite fossils are found in rock that are 521 million years and 252 million years old, then, it means that:
- Trilobites became extinct 252 million years ago therefore, no other remains keep existing on rocks earlier.
- Trilobites lived on Earth more than 521 million years ago
Therefore, the Option A and D is correct.
Read more about fossil:
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Answer:
1. The human's developed demonstration of the surface of the Earth is called maps. The characteristics like rivers, roads, and buildings are demonstrated by symbols.
2. The mathematical association between the actual distance on the ground and its demonstration on map is called scale.
3. Geographers utilize direction and distance to illustrate relative location, which is the position of one place with reference to another.
4. On a map or globe, the exact positioning of places is predicted by a universally accepted grid system. The system comprises lines of latitudes demonstrated by parallels, and the lines of longitude are demonstrated by meridians.
5. The initiation point on the grid system for finding the latitudinal location is the zero degrees latitude or equator, while the initiation point for finding the longitudinal location is the prime meridian.
6. All lines of longitude meet at the poles.
7. All the lines of latitude are parallel to the equator.
Answer:
GPS makes the reading of maps very accurate.
Explanation:
An electronic version also allows the information to be upgraded regularly to give accuracy and reliability than a paper map that could be outdated. There is a less human error with machines designed to survey large areas of land. The internet is a great way to be able to access information rapidly and efficiently. Traditional maps are limited to the type of information it can show. However, with GPS mixed with GIS and the internet maps can show a great variety of information, such as the type of soil or geology in a certain area. It is also possible to read the information and connect it, such as a route planning feature to help a driver get to their destination.
Answer:
Continental crust is less dense than oceanic crust therefore the continental crust sits above the oceanic crust, making continents. The more dense oceanic crust is below the continental crust and forms ocean basins.
Explanation:
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