Explanation:

<em><u>Bitcoin is a digital currency which operates free of any central control or the oversight of banks or governments. Instead it relies on peer-to-peer software and cryptography. A public ledger records all bitcoin transactions and copies are held on servers around the world</u></em>
There was both guerilla warfare and trench warfare in this global war
Answer: Option (C)
Explanation:
Bare lymphocyte syndrome is referred to as the condition which is known to be caused by the mutations in particular genes of M.H.C i.e. abbreviated as major histocompatibility complex or thus participating with presentation and processing of the Major Histocompatibility Complex molecules. It is known as form of the uncompromising combined immunodeficiency.
Answer:
adaptive Promotion
Explanation:
Since there is an intense competition, it will be best we introduce the rule of the survial of the fittest. This is an attempt at rooting out any organism which can not survive the new situation while the survivor are saved. though the promotion is more of a natural order than a model.
Answer:
Critical period
Explanation:
The critical period in developmental psychology is the stage of the maturation stage. This is a critical period. In this period the stimuli do not get the information from the environment. This is a very sensitive period. In this period, there are two stages:
- The weak period
- The strong period
The strong period is more sensitive to the environment. Thus here Dr. MecGiver believes that this developmental stage is a critical period.