The decay of the neutron is associated with a quark transformation in which a down quark is converted to an up by the weak interaction . The average lifetime of 10.3 min/0.693 = 14.9 minutes is surprisingly long for a particle decay that yields 1.29 MeV of energy.
The Stella Cherry Tree is a small self pollinating tree which produces an abundance of heart shaped, shiny, black red fruit with red flesh. It can live up to 35 years on a compact 15 foot tree.
In the stressful environment of a typical lawn, birch only live about 30 to 40 years. Size: Paper birch does not become a very large tree. The national champion in Hartford, Maine is 217 inches (551 cm) in. circumference, 93 feet (28 m) tall, and has a crown spread of 65 feet (20 m). Our South Dakota champion is near Custer.