Which of the following statements is true?

all animals in the chordata phylum have dorsal nerve cords.
there are far more vertebrates on earth than invertebrates.
sponges are not true animals because they can perform photosynthesis.
algae belong in the animalia kingdom because they are mobile organisms.

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.

Then it is june the conclusion to the second sentence is just restating "if it is june then it is summer"