Hello there,
They transfer the energy with or without medium (MATTER)
Since radiation is transferred through wave, it does not need any form of objects to pass through.
For example, the heat that radiation through the sun could be felt without any objects that connect us from The sun itself.
The advantage of a phototropism is that the plants grows in the direction of the sunlight and not into a shadowed direction where it would get less light
Life and death are complex things. Life is the existence of something and death is the end. They go hand in hand. Without one you cannot have the other. To live means to die and to die means you have lived.
Hopes this helps. Add a comment if not and I will try to assist.
The loss of the hydrogen on one molecule produces a negative charge, which is attracted to the positive charge formed by the loss of the hydroxy group from the other molecule.
The organisms who do better at surviving and reproducing will pass on more genes than those who don't. So those with better adaptations will survive more to pass on those genes.