It is both biotic and abiotic
<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.
In a living thing, both tissue and organs are very important to maintaining homeostasis.
<h2>its true</h2><h2>the ecological system of organization is a gigantic scale of all sorts of sh*tt</h2>