In 6 seconds , a total of 3 waves crash into a cliff. The distance between 2 adjacent wave crests on the water is 8 meters. The speed of the wave is 4 m/s (true or false?)

Since a female is both xx chromosome and the male passes down the x chromosome, than the offspring would be female since a female is xx.

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.

C- a hypothesis or d- an observation

Atissue is a group of connected cells that have a similar function within an organism.