Exercícios de classe 1. A respeito do conceito de ponto material, assinale certo ou errado.
I. Uma formiga pode, em qualquer circunstância, ser considerada um ponto material.
II. Um elefante nunca pode ser considerada um ponto material.
III. Dependendo da situação, um trem com 200 m de comprimento pode ser conside
um ponto material.​

In her notes, celeste wrote that the human body systems consist of molecules, cells, tissues, organs, and organ systems. what problem will celeste have on her body systems test when she studies this information? she forgot to list organism as a level. she should have written chemicals/molecules. this is not the correct sequence. these are not body systems.

How does public opinion differ on foreign and domestic policy issues? how does this affect the policy- making process?

The color contrast between the open ocean and the lagoon between the spit and the mainland. the greater concentration of suspended sediments in the lagoon gives the waters a more turbid appearance. the source of sediment in the lagoon is (are) [(rivers and streams from the mainland) (wind-borne sediment from the spit) (ocean waves washing over the spit) (all of these contribute)].