Answer:
Nutrients
Explanation:
The coastal ocean has more nutrients due to the process of upwelling, that is, movement of water offshore by the currents.
molten rocck near ground water supplies
Earth<span> can be divided into three main </span>layers<span>: the core, the mantle and the crust
Your answer would be, Core.
(Could also be called inner core)
Think of it as a watermelon, you have the crust, which is the green part, the mantle which is the whitish green part and the red which is the core.
Hope this helps.
In case you didn't get any of that, the answer is Core</span>
D. Because experimentation includes a control group. also, independent and dependent variables are part of an experiment they arent a type of research
