Alvin was a deep sea vehicle which was used to explore the depths of the ocean. It sunk but was recovered and recommissioned in 1973 after which it discovered black smokers, a special type of hydrothermal vent which produces super heated water with a highly acidic pH. Thus, the answer is B.
Remember that a biotic factor is a living component in an ecosystem that affects the population of another organism. So that means that the answer is B.
Answer:
About 3 liters for women and about 4 for men
