High pressure in the lymphatic vessels, contraction of the tunica media, and elastic recoil of connective tissues in the vessel walls push lymph through the vessels. valves in the lymphatic vessels push lymph toward the heart. gravity keeps lymph flowing toward the heart contraction of surrounding muscles and pulsing of adjacent arteries move lymph through lymphatic vessels toward the heart.

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and colour.

explanation:

preservation because he preserves part of the land and preserves means save

explanation:

b - the respond is innate and varies over time.

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