D. Fossil fuels are the remnants of organisms that lived a long time ago and were buried, heated, and formed into hydrocarbons.
Vinegar is an Acid because its pH is about 3.5
Potassium, 4 shells, 1 valence electron
These abnormalities occur in the serotonin system which reduces and/or inhibits control in their movement. This disruption of the neurotransmitter causes them to act maladaptively. Thank you for your question. Please don't hesitate to ask in Brainly your queries.