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.
Answer:
The most obvious result of the removal of the top predators in an ecosystem is a population explosion in the prey species. ... When prey becomes more scarce, the predator population declines until prey is again more abundant. Therefore, the two balance each other. When the predators are removed, prey populations explode.
Answer:
where they got a lot of sun exposure during the day
Explanation:
because the solar energy uses sun rays to get the energies supplied and needs longer sun exposure
Answer:
Oxygen
Explanation:
Earth's atmosphere is unique because it has large amounts of <em>oxygen</em><em> </em>
Answer options:
- fruit
- pollen
- flower
- seed
- spore
Answer:
flower
fruit
Explanation:
Angiosperms include all flowering plants. Therefore, all plants in this group have flowers, whereas other groups do not.
Both angiosperms and gymnosperms have seeds, but angiosperms are defined by the fact that their seeds develop within a surrounding layer of usually the flower. Both angiosperms and gymnosperms also have pollen - likely an adaptation to living on dry land. Many plants produce spores, not just angiosperms.
Angiosperms produce fruit, unlike other plant groups. This fruit is the protective layer that encases their seeds, unlike gymnosperms, where the seeds are 'naked'
