I'd guess: bones.
The downward tend on a graph is called "decay".
Nuclei with very large atomic numbers, such as those above Z=83, tend to be unstable due to the increasing electrostatic repulsion between protons. This can lead to spontaneous radioactive decay in the form of alpha decay, beta decay, or fission.
Automotive batteries tend to last between 3 and 7 years.Automotive batteries tend to last between 3 and 7 years.
Children are often among the last ones to leave the auditorium because they may need assistance or supervision from teachers, parents, or guardians. Additionally, children tend to take longer to gather their belongings and say goodbye to friends after an event.
Large nuclei tend to be radioactive because they are unstable and have an excess of protons and neutrons, leading to a higher likelihood of undergoing radioactive decay to achieve a more stable configuration.
encourage competition among subordinates
organisms tend to decay before becoming a fossil. animals with hard parts are preserved more easily. geological processes may destroy fossils.
Nuclear decay, etc. is defined for the nucleus. The atom consists mostly of the nucleus. If the nucleus loses two protons (in the case of alpha decay) it will have two charges less; eventually it will tend to lose two electrons to become an electrically neutral atom.
Cyclosporine suppresses T cells, which would otherwise tend to attack the tissues of a transplanted organ.
When friendships tend to be concentrated among people of the same rank.
thry tend to cause rough situations among students. injuries being among the top.
Teenage years are when we develop many of the things that we carry forward into our adult lives. It is a time of definition for many people. There are many and varied reasons why relationships between teenagers do not tend to last very long, and it's on a case by case basis.