An atom is defined as a smallest ? by Lulu (South Africa) Particle of a coumpound or element. Note: This is Chemistry!

In the nucleus

These are warm blooded animals and have four chambered hearts they lay eggs they are known as aves.

Over the past half century, there has been a trend in the United States and other developed countries for people to marry and start families later in life

Protein synthesis, photosynthesis, respiration and osmosis