Select all of the organ systems that are directly part of our immune system? Digestive System Respiratory System Circulatory System Lymphatic System Immune System Excretory System Endocrine System Nervous System Integumentary System Skeletal System Muscular System Reproductive System

The answer is atmosphere. there are four spheres of the earth: 1. geosphere (from greek word 'geo' = ground), 2. hydrosphere (from greek word 'hydro' = water), 3. biosphere (from greek word 'bio' = life), and 4. atmosphere (from greek word 'atmo' = air). a magnetosphere is a region of space around astronomical objects controlled by the magnetic field of that object. through the process of elimination, since lightning is present in the air, it can be found in the atmosphere.