A hyphen...................not sure if is this the particular answer you are looking for though
Answer:
Animals and plants have <u>different properties</u> that allow us to sort them into group. For exmple, birds and mammals both breathe using <u>lungs</u>. But <u>mammals</u> live birth to live youngs, unlike <u>birds</u> which lay eggs.
Explanation:
Ok. try reading something interesting or smth. Not my problem.
*repetition
*if a topic you don't understand
*instructor points and highlights topics
Answer:
indirect : joe walk up to the new boy randomly and direct: its when joe told the new boy "welcome; i hope you like it here.