Answer: a small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light.
Explanation:
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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Answer:
because they need foodi think
<span>The group exposed to a newly created drug that is being tested in an experiment is called the experimental group.
Whenever any new drug is formed, it is first experimented then it comes in pharmacies for use. Experimental groups are given variables,one variable is tested at a time. After that experimental group is compared to control group.</span>
Answer:
The statement suggests ability of existing DNA molecule to replicate itself by the process of DNA replication. Each strand of double helical DNA can serve as template for the synthesis of new complementary DNA strand.
Explanation:
Watson and Crick proposed the double-helical structure of DNA. Accordingly, the DNA molecule is a double helical structure in which two polynucleotide chains are held together by base pairing between the complementary bases of two chains.
There are four nitrogenous bases present in DNA: adenine and guanine (purines) and cytosine and thymine (pyrimidines). Adenine always pairs with thymine and cytosine pairs with guanine base.
According to Watson and Crick, the ability of one DNA strand to base-pair with a complementary DNA strand suggests the existence of the DNA replication process. During DNA replication, each DNA strand should serve as a template to specify the nucleotide sequence of the new DNA strand.
