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?
C. Your toddler's legs appear crowded by the rear-facing seat. Answer: B. At age 2. Experts used to advise doing the switcheroo around a child's first birthday, but recent research shows that children under 24 months are five times more likely to die or be seriously injured if they're in a front-facing seat.