Answer:
Germany sunk the Lusitania causing 128 American deaths
Explanation:
On May 7, 1915 a German U-boat torpedoed the British-owned luxury steamship Lusitania, which killed 1,195 people. Which is including 128 Americans which is according to the Library of Congress.
I hope this helped. I am sorry if you get this wrong.
Mary would start with a hypothesis such as, "I believe that plants with no soil will not grow because there are no nutrients coming from the soil for the plant to grow"
Then she would put the plan in place to start her experiment. She will get the same type of seeds, the same amount of water and sunlight. The only difference between the 3 plants is that one plant will have no soil, the second plant will have 1 inch of soil, the third plant will have the correct amount of soil.
She will run the experiment for 2 weeks to see whether the plants have grown and what the conclusion is. She will record how much the plants have grown every day, she will measure the height of each plant.
At the end of 2 weeks, she will gather all her data and come to a conclusion.
I'd say pollution or disease.