Answer:
Explanation:Seawalls are structures built of concrete, wood, steel or boulders that run parallel to the beach at the land/water interface. They may also be called bulkheads or revetments. They are designed to protect structures by stopping the natural movement of sand by the waves.
Answer:
The answer is the anarchy treaty system
Explanation:
The Antarctic Treaty System is a system that takes care of Antartica and its world wide connections (a continent with no life forms). The ATS serves to manage the associations within states in Antartic. The main aim of ATS is to ensure that human race in Antarctica shall always move to practice peaceful goals and shall not become develop any form of disunity.
1. the turning of all or part of an organism in a particular direction in response to an external stimulus.
2. Phototropism is a response to the stimulus of light, whereas geotropism (also called gravitropism) is a response to the stimulus of gravity . ... when the stem grows against the force of gravity, this is known as a negative geotropism.
3. Terrestrial plants direct their root systems downwards into the soil, mainly in response to the gravity vector; however, as the roots search for water and nutrients, they frequently change direction to avoid obstacles (thigmotropism). Root hydrotropism is a mechanism found in many species to avoid water stress.
Correct answer - Vestigial Structures.
Why? - These unused structures without function are called vestigial structures. Some examples of vestigial structures are wings on flightless birds, leaves on some cacti, and hind leg bones in whales.
