The chemicals, neurotransmitters are released to carry a nerve impulse which is an electric signal transmitted by the nervous system. This impulse transmitted from one neuron to another. Examples of neurotransmitters are serotonin in which scientists thinks that a low level of this is one of the causes of depression.
I enjoyed learning about punnet square in school.
Ancient organism remains, fossil layers, similarities among organisms alive today, similarities in DNA and similarities of embryos.
Answer:
Mass of reactants = Mass of products.
Explanation:
We co serve mass in this law so the start and end have to have the same mass. this the equal sign.
