D. Taiga. It says the it contains the largest expanse of untouched boreal forest in the world.
Taiga is the world's largest land biome, making up 29% of the world's forest cover. The largest areas are located in Russia and Canada. The taiga is the terrestrial biome with the lowest annual average temperatures after the tundra and permanent ice caps.
Improved technology allows to create more goods and to increase the efficiency of providing services (answer d.) and this is they way that it increases standards of living. If there are more goods and services then more people have an access to them.
The West African city that became an economic center of trade due to regional commerce is Timbuktu.'
<h3>How did
Timbuktu become a regional center of commerce in West Africa?</h3>
Timbuktu's strategic location at the confluence of desert and water made it an ideal trading center. It was absorbed by the Mali empire in the late 13th or early 14th century. By the 14th century, it was a thriving trans-Saharan gold and salt commerce center, as well as a center of Islamic culture.
The city's proximity to the Niger River encouraged trade between West Africa and Morocco in North Africa. By the early 1300s, Timbuktu had become the nexus of a variety of east-west and north-south commerce routes, and it quickly became the Mali Empire's primary commercial metropolis (albeit not it's capital).
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his barometric self-esteem.
This type of self- esteem instability reflects the short-term fluctuations in a contextually based global self-esteem. This means that someone with unstable self-esteem will value it positively in one day, but negatively for the other, this can even vary with each situation. An important characteristic of individuals with unstable self-esteem is how they can react very strongly in the experiences that they consider relevant to their self-esteem, within this they can not even see relevance for their self-esteem when there is not. Unstable self-esteem can take many forms. Some people may experience dramatic changes from very positively to feel very negatively about themselves, others may fluctuate mainly in the degree to which they feel positively or negatively about themselves.
