Answer:
2.5 mg
Explanation:
<em>The half-life of a substance is the time required for one half of the substance to decay. In order words, it is the time it will take for a substance to decay into half of its initial size.</em>
For a 20 mg element with a half-life of 30 which decays over a period of 90 years;
The first 30 years, 10 mg would have decayed, remaining 10 mg
The second 30 years, the remaining 10 mg would have decayed to 5 mg
The third 30 years, 5mg would have decayed to 2.5 mg.
Hence, in 90 years, 20 mg of the element would <u>remain only 2.5 mg.</u>
The answer to the question above is ABANDONMENT. This is the kind of negligence that the labor and delivery nurse made when she left the patient in labor before the replacement nurse arrives. Patient abandonment happens when the health care provider (e.g. nurse) terminates the provision of care despite the continuous care that the patient needs. Because once the health care provider starts the provision of care, he or she should continue this care until the patient stabilizes or recovers. This kind of negligence is stated in the code of ethics for health care professionals.
Answer:
Instead, real-world agents, including scientists, decide ... Because these scientific models often deviate from ... A is represented, unless there is a good reason to do so.
I think it's B. Because <span>DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone.</span>
A.) Genetic drift occurred; the few individuals left behind were the seals that passed on that specific gene pool.
