from a chemical perspective the words molecule and compound can be used interchangeably. True or False

False

Explanation:

A molecule can be defined as a particle that comprises of two or more atoms of an element that are bound together by a chemical bond. Molecules are usually electrically neutral. An example of a molecule is O2 (oxygen molecule); it comprises of two atoms of oxygen

A compound can be defined as a substance that is made of two or more different chemical elements that are bound together by a chemical bond which could either be an ionic bond or a covalent bond. An example of a compound is NaCl which is table salt; NaCl is a compound that is made up of one sodium element (Na) and one chlorine element (Cl) bound together by ionic bonds.

Therefore, when atoms combine, they form molecules, while a compound is a molecule that comprises of atoms of different elements. So we can say that not all molecules are compounds, but all compounds are molecules, hence molecule and compound can't be used interchangeably.

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.