I think the answer is A hope this helps
Plasmid. A plasmid is a small circular DNA presents in bacterial cells. It is used as a cloning vector for DNA. The cloned DNA and the plasmid are treated with a restrriction enzyme. The enzyme will make cleaveges in the same portions of the two DNA. The plasmid is then allowed to be replicated inside the bacterial cell.
new species will take their place
Explanation:
The frontier ethic assumes that saving endangered animal species may be considered foolish because new species will take their place. Frontier ethics suggests that the earth has an unlimited wealth of resources.
- The theory counters the sustainable ethics view to utilization of resources.
- Frontier ethics believes that if a resource becomes depleted in a part of the world, the earth will produce new ones to balance up.
- This is not economic or sustainable view to use of resources.
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Answer: Option (a) is the correct option that is largest percentage of oxygen is present in both earth's crust and human body.
Explanation: Oxygen is present in large amounts both in earth's crust and human body. The percentage of oxygen in earth's crust is 46.6% and the percentage of oxygen in the body is about 66.6%. So it is concluded that both human body and earth's crust have high percentage of oxygen.
