Saudi Arabia's economy is petroleum-based.
Oil accounts for 90% of the country's exports and nearly 75% of the government's revenues.
Answer: Map scale can be defined as the relationship that can be drawn in between the length of the map and the length of the ground.
Explanation:
The unit of the length on the map and the corresponding length of the ground is the map scale. The type of map scales:
Large Scale 1:25,000 or more
Medium Scale 1:1,000,000 to 1:25,000
Small Scale 1:1,000,000 or less
Small scale and medium scale can demonstrate large area for example a country or state whereas the large scale can demonstrate a small area like a city or region of city.
D. a new substance is formed. if it is chemical change then it is actually changing to something new. In this case a new substance is formed. It is a completely different substance from what you started out with.
Answer:
D. A substance, energy source, or organism used by humans
Explanation:
Its not man made like the others