Layer D is the oldest because bottom layers form first and are covered by new rock layers.
The correct answer is option D
The viruses lack the ability to reproduce without a host cell. This is the reason why the scientist declared that the viruses are considered as non living.
Viruses have genetic material in the form of DNA or RNA that is only used for replication in the host's body.
Viruses cannot survive without the host cell.
Well here's an image of the things that do occur (different phases). You can see which ones are are right in the answer choices and pick out the wrong one. I hope this helps...
The answer is amygdala. This is the region of the brain that
is responsible for emotional responses such
as fear and anxiety. It is part of the limbic system and hence important in
decision-making. It processes information and sends signals to the hypothalamus and other regions such as the locus
coeruleus (that processes fear and panic as in this case).
