Answer:
The word for the blank spot is Recessive.
Explanation:
The first known single-celled organisms appeared on Earth about 3.5 billion years ago, roughly a billion years after Earth formed. More complex forms of life took longer to evolve, with the first multicellular animals not appearing until about 600 million years ago.
They would constrict the diameter of blood vessels. Plaque and tobacco can block your arteries, inhibiting from doing their job.
That is true it can not happen