A neurotransmitter is defined as a chemical messenger that carries, boosts, and balances signals between neurons, or nerve cells, and other cells in the body. These chemical messengers can affect a wide variety of both physical and psychological functions including heart rate, sleep, appetite, mood, and fear. Billions of neurotransmitter molecules work constantly to keep our brains functioning, managing everything from our breathing to our heartbeat to our learning and concentration levels.
Answer:
Innate; adaptive
Explanation:
Immunity is the ability of an organism immune system to provide protection against pathogens. The immune system comprises of Innate and adaptive immune system.
The innate immune system is non-specific immune response to foreign substance and it comprises of physical barriers such as skin, chemicals and immune cells.
Adaptive immune response is specific immune response to particular antigen. It comprises mainly of T and B cells. In adaptive immune response the antibodies are produced and memory is created in exposure to specific antigen. So when next time that foreign antigen enters the body, it will produce the same specific immune response because of memory.
Answer:
classification was not appropriate because The Two Kingdom System groups together the organisms with true nucleus as eukaryotes and without true nucleus as prokaryotes
Explanation:
First local vegetation would die due to lack of sunlight, therefore lack of photosynthesis to support themselves. Then many of the animals and organisms would die due to lack of food source, and the remaining would migrate to places with similar climate and with an abundance of food.
The 2nd goes to first 1st goes to second 3rd goes last 5th goes 3rd
