Answer:
Frequency invoice
Explanation:
When several times the voice repeating occurs in a limited period. It is in the form of waves. It is also called a voice band means that the frequencies occur within the part of audio that is used for the transition of speech of a person or animal. It is a fundamental frequency in human voice especially in males ranges from 80 to 180 Hz and in the female, it ranges from 165 to 255. The fundamental frequency falls below the voice frequency. In this process the sound works as an acoustic sound source:
Answer: I think it's the first one, the Taliban blamed the situation on former Presidents Trump and Obama.
Two people who have chosen to be friends for over 30 years is an example of a group that is both primary and voluntary.
Answer: Option B
<u>Explanation:</u>
Primary groups are the groups which have most importance in our lives. The people who are a part of this group are the closest to us and are our friends and families.
The voluntary groups are the groups which we form on our wish and will and not have been given to us without our wish. So the friend who has been in our life for more than thirty years is one of the most important people of our life and has huge emotional importance for us.
<u>Answer:
</u>
With the advent of condensed and evaporated milk in the late 1800s, the percent of mothers that breastfed their babies had come down to 20-30% by 1940.
<u>Explanation:
</u>
- Though it was deemed crucial to breastfeed the babies during their infant years, majority mothers chose to feed their babies with condensed and evaporated milk owing to various rumors that had disseminated in society.
- These rumors were regarding the sagging of breasts and also about the possibility of breast cancer due to breastfeeding.
- The availability of evaporated and condensed milk just proved to be of convenience for the mothers who did not want to feed their own milk to their babies.
