An atom contains three valence electrons, this atom could be? 1. sodium
2. magnesium
3. aluminum
4. silicon

This large tectonic plate is bounded on three sides by whats know as the ring of fire. what is the name of this tectonic plate? a) pacific plate b) eurasian plate c) north american plate d) indo- australian plate plz it's science but there's no option for science so i picked chemistry

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?