Answer:
The correct answer is - O and 6.9; 7.1 and 14
Explanation:
A measuring scale that tells about the acidity or basicity or alkaline nature of a particular object or solution is possible with the help of a pH scale that measures how acidic or basic a solution or object is.
It ranges between 0 to 14. pH less than 7 or ranging from 0.0 to 6.9 is acidic and more than 7 or from 7.1 to 14.0 is basic or alkaline in nature. A measure of the relative amount of H+ ion and OH- ions in water is pH.
A similarity in both recrystallization and replacement modes of preservation is that delicate tissue and organs are not preserved.
<h3>What are recrystallization and replacement modes of preservation?</h3>
Recrystallization is a mode of preservation of fossils in which the internal structure of the fossils is changed by addition of more minerals to form larger crystal of the same material.
Replacement is a mode of preservation in which new material replaces the original material in the fossil.
In both methods of preservation, delicate tissue and organs are not preserved.
Therefore, a similarity in both recrystallization and replacement modes of preservation is that delicate tissue and organs are not preserved.
Learn more about fossils preservation at: brainly.com/question/2023023
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I don’t know if this is a question but yes a controlled experiment allows you to isolate and test the hypothesis
Answer:
flower is the part of a plant that is bright in colour and provides the pollen that is moved from plant to plant for pollination
