That’s where the Presidential Succession Act of 1947 comes into play. It was signed by former President Harry Truman, and it ...

What are primary and secondary ecological succession? There are two major types of ecological succession: primary succession and secondary succession. Primary succession happens when a new patch of ...

This type of succession is often called primary succession, as the soil, as well as all characteristic organisms, needs to re-establish. Large, low intensity disturbances, such as plowing in ...