They are able to travel in a vacuum at the same speed.
Hope it helps
A tree is considered living because it takes in nutrients like other living things. The tree is also made up of cells which all living things are made up of. Trees can also produce offspring. Just like any other living thing.
Carbon is an essential to all living forms on earth, whether they need carbon intake to help produce food or release carbon for breathing. All plants and animal life need carbon, without it would be impossible for life on earth.