18.93million is the answer. the population in 1980 was 5.93m and 24.86m in 2017
Answer:
Ok the number of earthworms is 30 and if it is not 30 it would be 40.
natural gas, we use it as oil in our cars
Answer:The demand curve for doughnuts will shift to the left.
Explanation:
For close substitute products the effect on the price of one substitute will affect the demand of the other substitute, if one substitute faces price fall the demand of the other substitute will fall .
How does Shifts in demand occur?
Depending on the demand the curve will shift to the right or left
When the demand increases the demand curve shift to the right .
Which may be due to things like a price increase of a substitute or a price fall of the complement.
This shift to the right is mostly determined by how popular a product is which could make people buy it irrespective of how much it cost.
Decreases in demand will result in shifting of a demand curve to the left which may be due to a price fall of the substitute product or a rise price of the complement or when people no longer have enough money to buy the product.
