Answer:
Hilum.
Explanation:
Hilum may be defined as the type of the depression or the fissure and may present in kidney known as kidney hilum, present on spleen and the lungs. This is also known as hilus.
The hilum marks the entry and exit of the nerves and the blood vessels. The lung hilum is a triangular like depression through which the blood vessels, capillaries and the nerves enter and leave in the lungs and connects the other organ of the body.
Thus, the correct answer is option (d).
Answer:
Air is essential for all organisms
Answer:
those best suited to demands of environment survive
The lancelets consist of approximately 32 types of
fish-like maritime chordates in the order of Amphioxiformes,
with an international dissemination in tropical seas and low temperate, they are commonly found half-buried in sand. The lancelets show 4 of the major
characteristics of the phylum chordata.
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Answer:
They are along a plate boundary in which plates are currently converging, causing uplift and steep slopes
