Answer:
The answer is 'D'. Transcription is the process by which a single stranded mRNA is formed from the double stranded DNA.
Explanation:
The central machinery of biology involves three processes- replication, transcription and translation. The process by which DNA doubles itself is called <u>replication</u>. In translation, protein is formed from the messenger RNA or mRNA. The major steps involved in transcription are:
- <em>Initiation</em>
- <em>Elongation</em>
- <em>Termination</em>
In the process of translation, amino acids bind together in the <u>ribosome</u> to form a polypeptide chain.
The negative impact humans could have on an ocean ecosystem is pollution, which can lead to a mass extinction on the wildlife.
Answer:
C. The evolution of many species from a single ancestor over a long period of time
A good index fossil is one with four characteristics: it is distinctive, widespread, abundant, and limited in geologic time. Because most fossil-bearing rocks formed in the ocean, the major index fossils are marine organisms