3 Complete each of the following sentences with the preterite tense of the verbs in parentheses.

1. Jairo y Piedadun paseo en bote. (dar)

2. Yode crucero por el Caribe. (in)

3. Túde picnic el fin de semana pasado. (ir)

4. Mi hermano y yonoticias de nuestros amigos de Colombia. (tener)

5. Camilaen un camping con su familia. (estar)

The children built a sand castle near the water.

Identify the structure of the human heart which is a muscular chamber that pumps blood out of the heart and into the circulatory system.

If an atom has no charge, what can we say about the subatomic particles in the atom? a) there will be the same number of protons and neutrons, but a different number of electrons. b) there will be the same number of electrons and neutrons, but a different number of protons. c) there will be the same number of protons and electrons.