Answer:
7 - a) a small river is called a <em>pond</em>
8 - b) fresh water conservation efforts
Answer:
Explanation:
Alberta's oil sands were formed millions of years ago, as tiny marine creatures died and drifted to the sea floor and were covered by layers of sediment that exerted enough pressure and temperatures to transform the organic matter into oil. Over millions of years, that oil became trapped in thick layers of sand.
Explanation:
Limitation of Water Transport: -Water transport has the following limitations.
1. The depth and navigability of rivers and canals vary and thus, affect operations of different transport vessels.
2. It is a slow moving mode of transport and therefore not suitable for transport of perishable goods.
3. It is adversely affected by weather conditions.
4. Sea transport requires large investment on ship and their maintenance.
5. It has high maintenance costs for ship and takers as it requires constant repairs and painting of ships.
Answer:
Barter system had many deficiencies such as
★Lack of double coincidence of wants
★Common measure of value
★Indivisiblity of commodities
★Difficulties of storing wealth
So we don't use barter system anymore
