阅读下面短文和问题，根据短文内容，在相应题号后的横线上写下相关信息(不多于
五个单词)，完成对该问题的回答。答语要结构正确，书写工整，字迹清楚。

1. Cousins You could say that the alligator and the crocodile are cousins because they belong to the same animal group. The group is called Archosauria (ark-o-SOR-ee-ah). The name means "ruling lizards." The alligator and the crocodile are alike in many ways. Both have hard, bumpy skin. Both lay eggs in nests that they build near water. Both are reptiles (爬行动物), too. 2. Look Again Even though alligators and crocodiles are similar, there are ways to tell them apart. Adult alligators are usually gray or black, and they are darker than crocodiles. Adult crocodiles may be tan, green, or brown. Most types of alligators have broad snouts. Crocodiles' snouts are different. Their snouts are long and narrow. Look at the picture of the alligator. Whenever an alligator closes its mouth, only the top teeth show. Now look at the picture of the crocodile. Do you see a difference? Whenever a crocodile closes its mouth, some of the lower teeth also show. 3      Alligators and crocodile also have different ways of doing things. Alligators like freshwater. They sometimes wander into salty seawater, but they don't stay in the water very long. The salt can be bad for them. Alligators usually make their nests at the edge of freshwater lakes, rivers, or swamps. They use grass and leaves to make their nests. Crocodiles, on the other hand, usually build their nests in mud or sand. Sometimes they construct these nests near salty water. The salty water doesn't hurt them. Alligators and crocodiles do other things differently, too. A mother alligator stays near her nest. When the eggs hatch, she carries the babies to water. They may even ride around on her head as she swims. They depend on her to help them stay safe. Crocodile babies don't rely as much on their mothers. In fact, the babies leave the nest a few days after they are born.

Where do they (alligators and crocodiles) lay eggs?
According to Part 2 "Look Again", how can we tell alligators and crocodiles apart?
What might be a suitable heading for Part 3?
According to the passage, who rely more on their mothers?
Who is the passage most likely intended for?