Did you know that crocodiles tend to have longer, pointed, v-shaped snouts while alligators generally have wider, rounder, u-shaped snouts?

the signal word “while” serves what purpose?

It compares

Explanation:

When the word "while" is used here in this instance;

Did you know that crocodiles tend to have longer, pointed, V-shaped snouts while alligators generally have wider, rounder, U-shaped snouts?

The "while" is comparing the snouts of crocodiles and alligators, saying crocodiles have V-shaped [pointy]  snouts and alligators have U-shaped [round] snouts.

I hope this helps! :)

the addition that would strengthen melissa’s thesis statement, both the dark game and the code book explain the importance of codebreaking, is :

main ideas of each book

melissa should discuss the main ideas of each book because these ideas will fully support her thesis statement. through these details, readers will also understand the importance of codebreaking that melissa referred to, which was inspired by the books.

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hope this !

explanation:

i feel like it is actually b.