Answer:
Wounded skin heals by forming a scab.
Step-by-step explanation:
An amoeba reproduces by splitting in two. - this is not an example of structure, instead it represents an example of reproduction, how genetic information is passed on and populations grow
A tomato plant makes its own food. - this is not an example of structure, but is an example of how photosynthesis is an important for plants that make their own food
The fur on a gray squirrel matches the color of tree bark. - this is not an example of structure, but it could represent a mechanism of avoiding predators
Wounded skin heals by forming a scab. - this is an example of structure. It is important that the skin is kept in good condition as it is the first line of defence and keeps everything inside. Therefore, wound healing is an example of structural repair.