Which statements explain what the fossil record indicates? check all that apply. 1. earth is 4.5 billion years old. 2. many organisms have become extinct. 3. mammals have always existed on earth. 4. mass extinctions have occurred several times on earth. 5. the amount of water on earth has decreased over time.

              Only the staement that tells that the human existed always is the wrong statement.

Explanation:

                        Fossils are the remains of plants and animals that were preserved in the rocks some billions of years ago. Fossil record shows about the connecting links between different organisms. Fossil record show the age of earth and life started on earth and evolution of different animals on earth. As we know that the earth is on third time covered with water and due to globel warming and activities of living being the water as decrease in quantity  on the surface of earth from fossil record we can also determine the water content of earth.      

answer; native americans who sometimes actively impeded railroad construction; physical obstacles like rivers and canyons, and