<span>deoxyribonucleic acid or DNA. </span>
Because you might have just done something different with the experiment and messed up someway during the test
Answer:
the orientation of Earth's tilt with respect to the sun – our source of light and warmth – does change as we orbit the sun. In other words, the Northern Hemisphere is oriented toward the sun for half of the year and away from the sun for the other half.
Explanation:
C- Single-celled organisms and soft, boneless animals.
