One way in which experimental research differs from observational research is that only experimental research can show cause and effect and is denoted as option D.
<h3>What is Cause and effect?</h3>
This is the situation in which one event contributed to the formation of another according to the type of relationship between the variables.
This is commonly used in experimental research so as to prove the interconnection and is tested by scientists in other to ascertain its authenticity.
Read more about Experimental research here brainly.com/question/17274244
#SPJ1
Answer:
genetic trait=eye color (a)
environmentally influenced trait=the language you speak (b).
Answer:
The correct answer is - the difference in altitudes.
Explanation:
The hemoglobin in the person of Denver who lives at a higher altitude than the person who lives in Philadelphia will be much higher. This is due to the fact that at higher elevation or altitude atmospheric pressure decreases that causes hemoglobin to stick to the RBCs and that results in less oxygen level in the body.
To compensate for this low level of oxygen levels hemoglobin content need to be higher in people living at a higher elevation.
This is what I see here,.