what central theme of biology helps explain why various cells can look so different from one another?

mark, a civil engineer, entered into a contract with david. as per the contract, mark agreed to design and build a house for david for a specified fee. mark provided david with an estimation of the total cost and the contract was mutually agreed upon. however, during construction, when mark increased the price due to a miscalculation on his part, david refused to pay the amount. this scenario is an example of a mistake.

Select the correct answer. ramon applied to the state university in the city where he lives, but he was denied admission. what should he do now? a. change his mind about graduating and drop out of high school so he can start working right away. b. decide not to go to college, because he didn’t have a backup plan. c. stay positive and write a mean letter to let the college know that they made a bad decision. d. learn from this opportunity, reevaluate his options, and apply to his second and third choices.

When used-car dealers signal the quality of a used car with a warranty, a. buyers believe the signal because the cost of a false signal is high b. it is not rational to believe the signal because some used-car dealers are crooked c. the demand for lemons is eliminated d. the price of a lemon rises above the price of a good used car because warranty costs on lemons are greater than warranty costs on good used cars