A person that studies rocks minerals and earth's land forms are geologist
Organisms who happen to be best suited to an environment and reproduce most successfully will be consider successful in terms of natural selection.
<span>There would be
a delay between the ECG pattern and the resulting beat of the heart because it
takes time for the pulse to travel from the systole (ventricular contraction)
to the radial artery. Pulse cannot be felt in the finger. It can be felt with a
pulse oxymeter.</span>
Answer:
a- black powder
Explanation:
it is powder and has no pigment
