The major rocks of Earth's crust are classified into three principal types based on their origin and appearance. Rocks in pure terms of geology can be defined as naturally occurring and coherent aggregate of one or more minerals.
Rocks are commonly divided into three major classes according to the processes that resulted in their formation. These three classes are-
- Igneous Rocks: Igneous rocks are those which have been formed from molten lava
- Sedimentary Rocks: Sedimentary rocks consists of fragments derived from preexisting rocks or of materials precipitated from solutions.
- Metamorphic Rocks: Metamorphic rocks are those that have been derived from either igneous or sedimentary rocks under conditions that caused changes naturally and over time.
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FAD's and LAD's would differ if we focused on dinosaurs within a certain region because of migratory patterns. Similarly, focusing on species levels would decrease the available data.
FADs or First appearance datum is a term used by scientists to refer to the first appearance of a species. Like-wise, LAD is used to refer to the last appearance of a species in the record.
If we were to focus on dinosaurs within a certain region, the FAD's and LAD's may be quite different. This is due to the migratory patterns of certain dinosaurs. Perhaps a certain species has a much more distant FAD or LAD in one region than it does in another because that dinosaur may have taken many years to wander to another region of the Earth.
Like-wise, limiting our search to a species level can impact the LAD or FADs. The taxonomy hierarchy is as follows:
- species
- genus
- family
- order
- class
- phylum
increasing in scope, Domain is the level that holds the highest variety of organisms. In contrast, species is the most specific, so limiting our data to a single species level would greatly affect the LADs and FADs because it lowers the number of dinosaur species that we take into account.
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Answer:
Your answer is A.
Explanation:
They both have bad air qualities and I took the test.