natural selection and common descent are the 2 ideas Darwin used to explain evolution
I would say body language because animals can detect threats
I would go for 'c'. The reason being, is that it doesn't do much, and I am also assuming that offshore drilling will not affect underwater sources, which are linked to the ocean.
Answer:
Atomic Number
Explanation:
The atomic number gives you the number of protons in a given element.
The number of mitochondria per cell varies widely; for example, in humans, erythrocytes (red blood cells) do not contain any mitochondria, whereas liver cells and muscle cells may contain hundreds or even thousands. The only eukaryotic organism known to lack mitochondria is the oxymonad Monocercomonoides species.
