<span>"Raw materials which are essential for life are cycled through the Earth's crust" </span>
If she is in school she should alert the teacher so that futher actions can be taken and you should maybe pull the fire alarm and evacuate the area just in case there are any harmful chemicals .
C. because eukaryotic cells are much more complex than prokaryotic cells and have membrane-bound organelles such as a nucleus which contain their DNA. Prokaryotic cells have no membrane-bound organelles; their DNA is suspended in their cytoplasm.
Answer:
The correct option is b (complementary).