What is the pathway of air into the body? nose → nasal cavity → pharynx → trachea → larynx → bronchi → lungs nose → nasal cavity → pharynx → larynx → trachea → lungs → bronchi nose → nasal cavity → larynx → pharynx → trachea → bronchi → lungs nose → nasal cavity → pharynx → larynx → trachea → bronchi → lungs

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explanation:

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the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.