Answers
When doing medical research with human subjects, the following are unavoidable limitations;
It’s often impossible to repeat trials on the same subjects.
Subjects may report an inaccurate medical history.
It can be difficult to control all possible variables
There are ethical or privacy concerns to consider.
Explanation
When doing a medical research that involves human subjects it should be voluntary, informed and consent. The researchers should respect the persons treated as autonomous agents. The volunteers should be protected from physical, mental and emotional harm. The benefits should outweigh the costs.
Photosystem II absorbs energy and energizes electrons. The electrons are passed along to photosystem I, which absorb more energy and adds it to the electrons.
Answer:
they all have solid cores of rock, metal, and maybe even ice, but these planets are totally enveloped in thick atmospheres of gas. Hydrogen and helium (the two lightest elements) make up most of the gases in the atmospheres of these planets
Explanation:
internet
CGC; <em>Arginine </em>
UAU; <em>Tyrosine </em>
AGC; <em>Serine </em>
<u>Argenine Tyrosine Serine
</u>
d. carbohydrates store energy for a long time :)
