1.) Heat will flow from the tea into the air in the room.
Answer:
I am not sure because it's it's not my language
Answer:
C. Africans had a stronger immunity to European disease than indigenous Americans.
Answer:
B. examine only the marginal costs, ignoring the sunk costs.
Explanation:
Marginal Analysis refers to the analysis of marginal (additional) cost & marginal (additional) revenue.
Eg : Producer Equilibrium is where Marginal Revenue = Marginal Cost.
Marginals vary only due to variable, & not fixed components.
Marginal Analysis examines only marginal costs, & not fixed or sunk costs.