What precautionary measures wil you use when preparing the biuret reagent ​

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone

What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.