Groups of different types of tissues working together are referred to as organs organ systems organisms populations

Groups of cells that work together form tissues. Organs are groups of tissues that work together. Organs that work together form organ systems. Organ systems that work together form organisms.

If you decide to make the leap to horse ownership it truly is a life changing event. once you sign the dotted line on the bill of sale you will have full responsibility for care, custody, training and financing your new horse.  . and leasing is just for a period of time for a amount of )