I believe it is C. as liquid hydrogen.
Thanks for the question,
To classify organisms, scientists use similarities and variations among species. typically these variations area unit simple to ascertain, like whether or not associate animal has fur, feathers, or scales. There area unit seven main assortment ranks: kingdom, phylum or division, class, order, family, genus, species.
<h3>Hope it helps!</h3>
Answer:
A. Porifera
Explanation:
Parazoan is a sub-kingdom of animal consisting only of the phylum of sponges (porifera), having two tissue layers only and lacking a nervous system and true digestive cavity.
They have certain characteristics like: sponges are marine, but there are some freshwater sponges that enjoy their water without salt. Most sponges do not have any type of symmetry, but some are radially symmetrical and they come in a variety of shapes, colors, and sizes, they are multicellular, heterotrophic and lack cell walls. Unlike other organisms, sponges lack true tissues and organs.
The mesohyl functions as an endoskeleton in most sponges, and is the only skeleton in soft sponges. This mesohyl is stiffened by mineral spicules, by spongin fibers or both.
<span>the high expense; electron microscopes are costly</span>
I think it is liqid but i dont know realy.
