Answer: Natural variation.
C consider the impact of their actions hope this helps:)
Answer: A
Explanation: There is no need to conduct and experiment if you already know the answer
If the medical assistant noted irregularities in the heart rate when palpating the radial pulse, they would opt to take a patients apical pulse for a full minute to make sure they are accurately counting the number of heartbeats per minute.
Humans have an interdependent relationship with other organisms just like organisms in an ecosystem are interdependent.
<h3>How are organisms interdependent?</h3>
To be interdependent means that the involved parties are mutually dependent i.e. they are reliant on one another.
Living organisms in their natural habitat are dependent on one another for food, space, mate and other resources.
However, humans are also interdependent on other organisms for resources like food, raw materials. For example, we eat plant and flesh derived from other organisms.
Learn more about interdependence at: brainly.com/question/1530206
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