Tim and his sister Karen were fighting over the last apple in the bowl. Tim insisted that he deserved it, because Karen had had the last orange at breakfast. Karen argued that she was hungrier than he was, so she should get it. "Guys, come on," their mother said. "Split it. Here's a knife. Tim, you cut the apple. Karen can choose the half she wants." "But what if her half is bigger?" complained Tim. "Make sure it's even. Then it will have to be fair," said their mother. "Anyway, once you've done that, you can help me bring in the groceries. I've got a whole new bag of fruit."

Which statement best describes two themes of this text?