. Thomas Jefferson was alarmed by the fierce debate over , warning Americans about its threat to national unity.

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

the of atp are the key to its ability to store and supply energy;

phosphate

the phosphate groups of atp are the key to its ability to store and supply energy. atp releases energy when it breaks bonds between its phosphate groups.

b) almost one million irish people died during the potato famine.