The economic resources' type of "Archeologist"

"You visit the doctor for checkup."

"You buy a book from SE-ED Book Center."

"You hire someone to cut your lawn."

The meaning of "substitute (n.)"

The meaning of "complementary (n.)"

The meaning of "taste (n.)"

The meaning of "trend (n.)"

The type of markets of "e-commerce"

The type of markets of this picture.

The type of markets of this picture.

The type of markets of this picture.

"willing to buy, ready to buy, and have enough money" is related to ...

"the amount of a good or service for sale" is related to ...

"the same type of product, but a different brand" is related to ...

"goods that need other goods to complete their use" is related to ...

a complementary product of "toothbrush"

a complementary product of "mobile phone"

a substitute of "chicken eggs"

Which one is NOT the substitute of this product?

Which word is THE BEST to describe this picture?

Which word is THE BEST to describe this picture?

Price of goods is rise, the quantity demanded of goods will ...

Which is THE BEST to describe this sentence "Sellers want to sell a large amount of their products when the price rise."?