It has two layers.
Hope I could help :)
Now-a-days, there are many softwares and application, which can help to keep track of your fitness. Motion analysis is referred to a technique that helps in tracking the record of the human movement patterns.
The softwares and the applications based on the technique of motion analysis are referred as motion analysis systems. These application track the physical activity performed by a person and also guide abut what a person should do to remain healthy.
1.Biological species concept
2.Cladistic species concept
3.Cohesion species concept
4.Competition species concept
5.Ecological species concept
6.Evolutionary species concept
7.Isolation species concept
8.Phenetic species concept
9.Phylogenetic species concept
10.Recognition species concept
11.Typological species concept
For descriptions just look them up :)
through lime trees
i live in california and we have a lime tree in or backyard :)