Hello! Succession is not really harmful to ecosystems and it’s not a one-time event, because things come and go overtime. Therefore, it’s not A or D. It is necessary for ecosystem recovery, because it’s needed to continue on with things, just like families reproduce to make family continue. It’s not that bad. It’s just a natural process that happens. The answer is B: natural recovery process.
Off shore rigs, also called oil platforms, extract oil from the earth. Off shore rigs are quite large structures, and if close to one, it probably wouldn't be too hard to see it. Off shore rigs explore, extract, store, and process petroleum (basically oil). An off shore rig extracts the oil from rocks below the seabed. It is very dangerous and difficult work to work at an oil rig, but salaries are often quite high, partially compensating for the risk.
Answer:
"a" (and any subsequent words) was ignored because we limit queries to 32 words.
Hank passes by a building every day on his way to school. He notices that the rock used to build the walls of the building is a different type than the rock used to build the steps. ... Energy changes igneous rock into liquid rock and changes sedimentary rock into small pieces of rock.
The process that breaks down glucose into ATP is cellular respiration. So, the answer is C.