The world is divided into large areas based on their average temperatures and precipitation. What are these areas called? Climate continents
Climate zones
Global areas
Global regions

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

Classify this reaction: 2al+n2-> aln.

Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?