Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface.
Answer: i'm pretty sure that the bottom one goes with the second one on the right
Explanation:
Answer:
The chemical and electrical signals are used by brain for communication,sensation and thought. Brain uses electrical signals from communication.
The correct answer is (b) arctic fox
The arctic fox shows two color of fur depending upon the season. During summer and spring season the fox has dark colored coat .It does so to match the color of the brown dirt in the surrounding. In winter's the arctic fox turns its fur to white to match the color of the snow in the surrounding. This phenomenon is known as " camouflage". Animals have developed this adaptation to protect itself from being killed by other animals by changing the color of the fur according to the color of the surrounding.