Are you asking for the translated sentence?
If so, I believe it would be "Melissa throws lies." Echa is a conjugated form of Echar which roughly translates to "to throw" and Mentiras <em />translates to "lies."
This may not be completely right, I'm sorry. www.spanishdict.com is a good place to find answers too.
Personalmente, me gustan las rocas ígneas por cómo están hechas. Es interesante para mí escuchar cómo el magma se enfría en diferentes formas y tamaños para crear cada roca.
Yup that’s right. Good for you :)
If its plural (los/las/ more than 1 thing) its gustan
If its singular(la/el/ 1 thing) its gusta