I think the phrase you are looking for is "natural resources" - these include fresh water, food and fertile soil on which crops can easily be planted.
It shows what certain symbols or pictures could mean on a map, and in addition, could show a scale that converts inches or centimeters that you can measure with a ruler to miles.
By creating common culture symbols such as the flag, national anthem, and motto
It is an important port in oil trade.
Hope this helps!
Answer:
b. 10%
Explanation
From each trophic level, only 10% of the energy is passed on to the next level as the ecosystem is not very efficient. Therefore, 10% of available energy will be passed on from producers to primary consumers.
