<span>Answer B
A decrease in the intensity of the light would interrupt THE EMISSION of energy which would reduce the electrons diminish its brightness, which the emission of electrons by a material when it impinges on him an electromagnetic radiation (visible or ultraviolet light, generally included in the term other types of interaction between light and matter and leads to reduction</span>
The awnsers would be D for the first one and A for the second. Let me know if you want an explanation.
Extinction of species reduces the number of different species in ecosystems, hence lowering the diversity of living things.
<span>The thing that might happen to the tree was it might get swept away by the current until it catches on something or disappears (dissolves). The tree will going to the flow of the river until it catches on something where it may disappears or dissolve.</span>
Probably it would be like a room since the door would be the cell membrane and the nucleus would be your bed not 100% sure tho
