in term of wavelength, what is the distance along the wave between a compression and next rarefaction? ​

answer; a. neither end of earth's axis is tilted toward or away from the sun .is your correct answer;

mistakes are ok

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.