Answer:
The oil sands are a strategic resource that contributes to economic opportunity and energy security for Canada, North America and the global market. The oil sands comprise 167.2 billion barrels of crude oil – 97 percent of Canada’s 172.5 billion barrels of proven oil reserves – and are a vital part of the Canadian economy.
Source: nrcan.gc.ca
<span>B. they needed access to bodies of water for trade
Water and aquatic access was necessary for water as well as access to trade.
Hope this helps :)</span>
the first plants and anthropodes appear on land approximately about 470 million years ago
Well right now there are issues such as unemployment, government corruption, crime, access of clean water, and energy shortages.
In the future there could be issues such as lack of better healthcare treatments and equipment and better education.
