New species often form on new islands because they evolve to fill new niches
Answer:
They protect the body from infectious agents.
And
They signal the immune system to destroy pathogens.
Explanation:
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Polymers are defined as large molecules assembled from smaller, individual molecules.
Answer: B)
Answer:
d. superior to the popliteal region
Explanation:
The lumbar region comprises five vertebrae of the back where the spine bends outward. This part of the spine is essential as it holds the majority of the body weight and also offers flexibility. The popliteal portion is situated at the backend part of the knee and forms the lumbar region at its superior segment. So, the correct answer is option d.