What is the main function of the structure that is identified as a in the picture above

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere