A., I believe. It's either an ionic, covalent, or hydrogen bond
Answer:
The climate was very hot and became colder in later time periods.
The correct option is this: IT HAS A CRYSTALLINE STRUCTURE.
The structure of corn starch make it possible for it to be used as a thickener. When corn starch is dissolved in hot water or any hot substance, it thickens as it cools down because of its structure.<span />
When an atom gains an electron, it becomes a negative ion.
