Hydrogen
Iron
Aluminum
Copper
Sodium
Carbon
Silver
Mercury
Gold
Lead
........
Answer:
Abscisic acid.
Explanation:
Also written as ABA.
Act as Growth inhibitor.
Sorry if I write wrong spelling of abscisic acid. (But I think it's right)
The correct answer is option Observations can be made from outside the "system".
The study of the plate tectonics allows the observation of the movement of the plate tectonics. These observation can be study to determine the pattern of the movement from outside the plate tectonics system and the event occurring due to plate tectonics can be predicted.
An example of this would be eye color. You can put contacts in changing the color but not necessarily changing the genes.
They all develop gills, slits and tails
