Which of these act perpendicular to each other to produce an electromagnetic wave? (2 points) a. changing crests and troughs b changing electric and magnetic fields c changing compression and energy transfer d changing longitudinal and transverse waves

Changing electric and magnetic fields            

Explanation:

An electric field is produced due to a charged particle. The electric field due to a positive charge is outwards and for negative charge it is inwards.

Moving charged particle is responsible for the production of magnetic field. Electromagnetic waves are produced due to oscillating electric and magnetic field components. These two waves oscillate perpendicularly to each other and both are in phase with each other i.e. we can say that an accelerating charged particle produce electromagnetic waves.

So, the correct option is (b) " changing electric and magnetic fields ".

the  different  of  these  two  are  that  they  differently  handle  their  team.

an  expressive  leader  focuses  on  the  task  at  hand  and  make  sures  that  their  goal  is  achieved.  they  accurately  finish  the  task.  an  instrumental  leader  on  the  other  hand  works  on  the  unity  of  the  group,  they  care  more  about  their  employees.  all  the  while  creating  a  good  environment.

they have identical fossils of organisms that have evolved over time.

both have animal fossils preserved in them due to weathering and erosion.

they contain different fossils because life on earth has changed through time.

the fossils in them were formed on the surface of earth due to exposure to sunlight.