<h3><u>Answer</u>;</h3>
Key
A sorting device that is useful in classifying by observation is a <u>key</u>.
<h3><u>Explanation</u>;</h3>
- <em><u>Classification key or taxonomic key is a device that is used by scientists to identify unknown organisms. </u></em>
- They are constructed so that the user gets a series of choices about the characteristics of the unknown organisms.Thus, by making the correct choice at each step, one is led to the identity of the specimen.
- Therefore<u><em>, keys can be used to identify a living organism or determine which group it belongs to</em></u> by answering questions on the key about characteristics of living things.
As energy moves in waves through the water, the water moves in a small circular movement.
Paper recycles so easily due to the fact that it normally only needs to be shredded [to make smaller units to recycle] and water is added in order to break the wood fibers apart. As a slurry of water and wood fibers was used to make the paper, in a process of successive steps where the water was removed; in recycling of paper, water is added and, to speed up the process, mechanical "beating" of the mix is utilized to help break the fibers apart.
Once the fibers are broken down into single units, the paper-making process can begin once again.
D. law of crosscutting relationships
Explanation:
The law of cross-cutting relationships is applicable to an igneous intrusion that goes through a sedimentary rock.
This law is one of the laws used in relative dating of rock sequences based on the order through which they form in nature.
- The law states that "geologic features such as igneous intrusion, faults, joints are younger than the rocks they cut through".
- In a sequence of strata, the intrusion is always younger than the rock it passes through.
- Faults which are the fractures in rocks are also younger than the rocks they cut through.
Learn more:
sedimentary rocks brainly.com/question/2740663
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