I would say body language because animals can detect threats
Answer:
science is the study of the physical world by observation for the purpose of understanding the world
Certain Protiens, amino acids form protiens
If two populations of birds stop interbreeding because of a difference in song patterns this would be described as behavioral isolation.
Primary succession is ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier.