Answer:
If a material is more dense because its molecules are larger, it will transmit sound slower. Sound waves are made up of kinetic energy. It takes more energy to make large molecules vibrate than it does to make smaller molecules vibrate.
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Answer:
You have to use indirect pronouns. For example Yo, Tu, El, Ella, Usted, Nosotros, Vosotros, Ellos, Ellas, and Ustedes.
yes they both should be feminine it should be
Mi abuela es argentina
