Mr. bellazono, a fisherman in his late sixties, comes to the clinic to complain of small ulcers on both forearms as well as on his face and ears. although he has had them for several years, he has not had any other problems. what is the likely diagnosis, and what is the likely cause?

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.

Wich is not standing in the way of astronomers getting a good view of different star

The earth formed roughly 4.5 billion years ago, yet evidence of life dates back to about 3.5 billion years ago. which one is not a possible hypothesis of how life on earth arose?