Once a Chemical Formula is written in a Chemical Equation, what is the only thing that can be added?

Which part of a feedback mechanism is able to monitor the conditions outside of cells and usually uses nerve cells to relay this information to an intergrating center

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.

Draw any one of the skeletal structures of a 2° alkyl bromide having the molecular formula of c6h13br and two stereogenic centers. indicate chirality by using wedge and hashed wedge notation. lone pairs do not need to be shown.