The answer is ..b .the smallest units of an element ...
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Answer: D
Explanation: because they are in the military and that’s the only law I would recommend if someone needed discipline in the military
The best precaution against carbon monoxide poisoning is to keep air moving through the boat.
Carbon monoxide is a potentially deadly gas that is produced any time a carbon-based fuel burns. If you suspect carbon monoxide poisoning you must do the following: open doors and windows, turn off gas appliances. To determine if a person is poisoned by carbon monoxide you may look for the following signs and symptoms: dull headache, weakness, dizziness, nausea or vomiting, shortness of breath, confusion, blurred vision, loss of consciousness.
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.
