Creating a prototype and troubleshooting are steps in the development

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question

for a different answer set the answer would be because the oxygen in the water had depleted (apex)

answer; microsoft;