HDI is a tool that the UN created to measure how 'developed' a country is based on 4 factors. These are; life expectancy, expected years of schooling, GNI (gross national income) per capita (person) and mean years of schooling. HDI is also a much more accurate tool for calculating development (as opposed to GDP) as it includes social factors, whereas GDP only includes economic factors.
The area of geographical study that involves examining different populations in the world and including their distribution and trade patterns is : Human geography
It's dealing with how human activity affect the earth surface
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Explanation:
Fossils do tell a lot about Earth's past landscape. Age of rocks , species of animal in the past era, etc. But there are various aspects that they fail to answer. While fossils reveal what ancient living things looked like, they keep us guessing about their color, sounds, and most of their behavior. Fossils are very rare.The Fossil record is like a big jigsaw puzzle, with most of the pieces missing. Many species probably left no fossils at all.
Answer:

Explanation:
Given


Required
Find AC
I will answer the question with the attached triangle
From the attachment:

Make AC the subject

This gives:



Answer:
True
In a free market, competition determines price, and so companies will compete with one another to offer the lowest prices.