Answer:c
Explanationb:ởi vì giá lươnhug dcựco người bá q quyếtn
Answer:
<u>True!</u>
Explanation:
The longest geologic era was the Precambrian. It began with the formation of the earth about 4.53 billion years ago, and ended about 542 million years ago.
This means this period lasted approximately 3.98 billion years!
As such it's undoubtedly the longest geologic era by a long shot!
The answer is All of the above.
Answer:
C. Substance B gives off OH– ions that combine with H+ ions when dissolved in water.
Explanation:
A base is a substance that interacts with water to yield excess hydroxide ions in an aqueous solution.
Bases are certain metallic oxides, metallic hydroxides and aqueous ammonia.
Bases reacts with acids to produce salts which is substance C as described in first option.
Substance A is an acid and it gives off Hydrogen ion.
Answer:
5,2,3,1 and 4.
Explanation:
Whole genome shotgun sequencing is the method in the genetics that are used to sequence the whole DNA fragments. Different DNA sequencing methods are chemical sequencing and Sanger sequencing.
The different steps that are involved in the whole genome shotgun sequencing are as follows. The DNA is isolated and broken DNA with the help of the restriction enzymes. The genomic fragments are inserted into the cloning vector for its multiplication. These fragments are then transformed into the E.coli with the cloning vector. The sequence assembly is important step in the sequencing. Than the sequencing of the cloned fragments are done to find the sequence of the whole genome.
Thus, the correct sequence is 5,2,3,1 and 4.