Phylum Porifera
The phylum Porifera ("pore-bearing") consists of approximately 5,000 species of sponges. These asymmetrical animals have sac-like bodies that lack tissues, and are usually interpreted as representing the cellular level of evolution
Answer:
D: A density-independent factor.
Explanation:
An earthquake is a density-independent limiting factor
Answer:
Explanation:
Lymphatics join up to form up larger lymph vessel than gradually transport the lymph back to the large veins that run just beneath the collarbone called the subclavian veins.
The answer is D, because it is a form of camouflage and an adaptation to the environment for self defense