Iron, Ruthenium, Osmium, and Hassium.
They're transition metals
At first, atoms were considered to be very simple and indivisible. People form ancient times knew only of water, earth, fire, and air, not what constitutes them or how they work specifically. Now, there are 118 elements and all atoms are proven to consist of neutrons, protons, and electrons, and that's just the beginning of it.
C. A person pushing a box across the floor
By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments. Fossils can tell us a lot about the past.
If the resources run out and there is no way to get them all motors will have to be switched to solar or some other source.
Brainliest please!!!!!
