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?
How long can horses lie down? How long can horses lie down at a time? Bella was down for 45 minutes this afternoon. She was lying completely on her side, would raise her head for a few minutes then lay it back down. (This was according to the barn owner) She wasn't thrashing or rolling just lying still.