Cyclic adenosine monophosphate is a second messenger significant
in many biological processes. cAMP is derived from adenosine triphosphate (ATP)
and used for intracellular signal
transduction in many diverse
organisms, transmitting the cAMP-dependent
pathway. It should not be jumbled with 5'-AMP-activated
protein kinase.
Operant conditioning is a learning mechanism that consists on reinforcing certain behaviours through rewards or punishments respectively depending on whether the aim is to increase or decrease their frequency.
According to operant behaviour, good grades are most likely to be reinforcers to children who obtain a positive stimulus after the correct behaviour, for instance, feeling how they have overcome a challenge, see how proud their parents/teachers are, etc.
Religion is important in Ancient Egypt:
Religion in Egypt was a tool which taught people to live an orderly way of life. It also taught obedience to the law and to the crown. Heka is the fundamental belief of Egyptian religion and it means enchanted magic which is all pervasive in this universe and Heka is the god of magic and medicine.
The Egyptian gods are seen as the in charge or the custodian of order. Out of chaos came an order. Egyptians believe that their gods have bestowed them with enough resources and it is the duty of the people to praise the gods as their benefactors. All natural sources are associated to a god in ancient Egypt.
Answer:
Americans lived in cities is the correct answer.
Explanation: