the answer is C or the third one down, Layer A is the outer core because its made of iron and nickel
Answer:
a the body shivers to generate heat
Eukarya. Eukaryotes are the only organisms that have true nuclei and membrane-bound organelles, though some bacteria have a pseudo-nuclei.
The reason why only eukaryotes have true nuclei and membrane-bound organelles is because only eukaryotes have figured out how to create so much energy through the mitochondria, which is required for high compartmentalization.
