The mandible lengths of the camellia weevil (used to break through the pericarp of the Japanese camellia fruit) vary in the northern and southern regions of the country where fruit sizes are also extremely different. Southern weevil populations have longer mouthparts but are not sufficient to bore into the thick pericarp of the fruits; In the north, the insect mouthparts may be shorter but the weevils are more successful in boring through the skin of the smaller fruits. This study  depicts an example of  ______ coevolution. A. escalatory B. diffuse C. antagonistic D. reciprocal

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Tissue renewal

In multicellular organisms, tissue is a level of structure that consists of a group of physically and functionally identical cells and their intercellular substances. Unicellular organisms do not have tissues. Tissues are absent or poorly differentiated even in the simplest multicellular animals, such as sponges. However, more evolved multicellular animals and plants have specialized tissues that may organize and govern an organism's reaction to its surroundings. The word tissue is derived from the Latin word 'weave.' Plants and animals have various kinds of tissue systems that differ in their work and composition according to the different requirements.