<span>The answer is : Both have true necks, while eusthenopteron has no neck. </span>We know that tiktaalik is more closely related to acanthostega than it is Ichthyostega eusthenopteron because Tiktaalik and Acanthostega both have true necks while eusthenopteron has none.
I think it might be the first one: hiv infections. (hope this helps!)
3. <span>They bloom at night.
4. </span><span>hunting in packs
5. </span><span>sleeping
Hope this helps!</span>
