Good evening, Pineappleman!! Your best answer would be D - Some bacteria are beneficial to human health because it talks about how it helps the process of digesting lactose. Your answer would not be A because it is not raising nor decreasing acidity at all, it is not even talking about the acidity in foods. B is wrong because it does not talk about your liver whatsoever. And C does interfere with digestion, but it not harmful. It does talk about how bacteria can help those with lactose problems digest yogurt naturally. I hope I helped!! Have a great evening.
A is your answer.
Water containing no salt is known as isotonic solution
The event was volcanic eruption.
The second largest volcanic eruption took place in June 1991. The volcanic eruption took place in the Mount Pinatubo (a chain of volcanoes along the Luzon arc) on the island of Luzon in the Philippines. After the millions of tons of sulfur dioxide were discharged into the atmosphere, resulting in a decrease in the temperature worldwide over the next few year.
Answer:
By studying fossils, scientists learn how much organisms have changed as life developed on Earth. There are space in the fossil record because many early forms of life were soft-bodied, which means that they have left few traces behind.
Hope it helps.