ce and bce or bc and bce
bc and bce
No, you do not need to place an additional period after an abbreviation if the abbreviation already includes a period at the end, like "etc.". Just use one period to end the sentence.
bc and bce
Since you didn't include the abbreviations in the question we cannot answer
The abbreviation for forenoon is "AM" or "A.M." which stands for ante meridiem and refers to the period of time before noon.
Since you didn't include the abbreviations in the question we cannot answer
The present perfect tense allows for the sequencing of two or more noncontinuous events that occur in the same time period. This tense is formed by using "has" or "have" followed by the past participle form of the verb.
People of the same time period are referred to as contemporaries.
Could be Specified Period of Time Contract or Southern Pacific Transportation Company.
Reconstruction
Yes, you can get your period and breastfeed at the same time!
I am not sure if bbm and cima can be done at same time period in UK.
Weather-over-a-period-of-time.