Demographers are scientists who study human populations. They tend to map and understand the dynamics of population, which includes birth, death, and migration. All of these affects population and must be studied by demographers. They may study the population change within a country or the interrelationship of countries' populations, which is mostly necessary in studying migration. However, they could also take specialization. For example, they could study only parts of the population like workers' social pattern. Demographers mainly use statistics in mapping their data.
Answer:
A the first one
Explanation:
it will affect small farmers I think
the preamble, hope this helps
<u>Answer:
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Simple tools like choppers were used for about 2 million years.
<u>Explanation:
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- The early human had devised certain techniques to grant himself convenience in day-to-day life.
- One such technique was of the use of sharp tools for cutting and chopping.
- These tools were either made by using the methods of filing, scraping, etc. or were directly used as they were found naturally.
- Tools like choppers helped early human beings in clearing ground for residence and agriculture.
Answer:15
Explanation: you can add 5 three times and u get 15
