Plutonium is much rarer in nature than uranium and is more commonly used for bombs rather than as reactor fuel. Like uranium, it comes in various isotope forms, with plutonium 239 the most commonly used. It is mixed with the much more unstable plutonium 240 to generate power.
It's my understanding that a horse's knees close around age 2- 2 1/2. My gelding JUST turned 3. A couple days ago in fact. Will a horse's knees almost certainly be closed by that age?
There are four main tendons and ligaments at the back of the horse's leg that do the majority of the work: suspensory ligament, inferior check ligament, deep digital flexor tendon and the superficial digital flexor tendon. In a horse's forelegs, these four structures are the most commonly injured tendons and ligaments.