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.
Answer:
Bromine (Br)
Explanation:
Bromine (Br) is the 35th element in the periodic table. Its atomic weight is 79.9 daltons. Elemental bromine exists as a diatomic form (Br 2).
By gathering information from past facts
A federal government is the type of government that combines aspects of both unitary and confederal government. The United States has a federal government.
Some adapt by limiting there outdoor activities to warmer parts of the day, they wear thicker clothing , stay in there houses and use fires to stay warm
