Answer:
4. Fossils form in sedimentary rocks
Explanation:
- A <u>fossil expresses the traces or is the remains</u> of prehistoric plant or animal that has died and its body part has been carefully been imprinted on to the surface of the rock that is sedentary as they have the characteristics of the mineral preserving qualities.
- There age , method of formation and evolutionary significance can be well established by the fossil remain in rocks that depict there occurrence throughout the carbon dating of the rocks.
- The <u>process that leads to the formation of fossil is Personalization, casts and molds, recrystallization and Carbonization</u>. Tracing a fossil consisting of digging out the track and burrows.
- Some fossil is found in deposits of resins which complete preserve the fossils from erosion process.
It is when warm air rises then cools then drops then rises then cools then drops etc
Answer:
c. Graded beds are evidence of a decrease in current velocity during deposition whereby coarse sediments settle out first, followed by finer sediments as the velocity decreases over time.
Explanation:
The cretaceous-tertiary mass extinction was apparently caused by a meteorite that struck Yucatan Peninsule in Mexico
There are multiple reasons for the variations in type, quality, and quantity in minerals, such as:
- place of formation, on the surface, or inside the ground and how deep inside.
- pressure; extremely important for the structure of the minerals as well as the mixing of mineral types.
- temperature; similar to the pressure, in fact in combination with it, affects the structure of the minerals.
- tectonic activity and volcanic activity; cause the other factors and are also responsible for the quantity of minerals.