Eukaryotic cells all feature a nucleus, and their organelles are enclosed inside membranes.<span> They also have a plasma membrane, which is a layer of phospholipids that surrounds the whole cell, and they feature an internal cytoskeleton</span>
Frog's heart<span> has one ventricle, while humans have 2, hence deoxygenated blood from body mixes with the oxygenated blood coming from lungs.
Source: S</span><span>ocratic</span>
Where are the options?
btw, Plant starts carbon cycle...
Reproducibility is important because it is the only thing that an investigator can guarantee about a study.