True global warming is a world wide problem
The cells that are responsible for attacking, adhering and digesting foreign bodies are the phagocytes. The platelets help wounds to heal and prevent bleeding and the main function of the erythrocytes is the transport of oxygen
Answer: They have larger ranges and thresholds.
Explanation: The rank-size rule defines range as the longest distance that a customer will travel to purchase a good or service. Threshold is the minimum market needed to support the supply of a product or service. It is assumed that customers which travel longer distances to purchase a higher-order good or service, and a provider of such goods and services will require a larger customer base to make a profit. Thus, higher-order services have larger ranges and thresholds.
The answer is A
i did the test and i got it right
