Answer:
the answer is B because primary is when de breaking of rocks n secondary about the area
Explanation:
B
Answer:
The superior vena cava is formed by the merging of the right and left brachiocephalic veins.
Explanation:
The superior vena cava is one of the main veins of the human body, it is responsible for receiving blood from the head, neck, upper chest and upper limbs. It is formed by the union of the right and left brachiocephalic veins, they originate from the junction of the subclavian vein with the internal jugular vein to form the right and left brachiocephalic venous trunk, both trunks join or merge into a single trunk and they form the superior vena cava, which flows into the upper part of the right atrium.
Answer:
Characterstics of larva of silkworm on the basis of body structure is given :
1) The body of larva of silkworm consist of head, thorax and abdomen. The mouth part consist of pair of strong mandibles and a pair of lip.
2) There are three segments of thorax region. Each segment bears a pair of legs. The abdomen part is divided into ten segments. The third, fourth, fifth, sixth and ninth abdominal part produces abdominal appendages called false legs.
Answer: the false ribs. Which are the lower ribs.
Explanation:
