What is the source of most of the salt in the oceans? Human activities adds salt into the ocean, rivers and streams carry sediment containing salt to the ocean, marine fish produce salt adding it into the ocean, or wind blows salt into the ocean?

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

How is the atomic number of a nucleus changed by alpha decay