Down syndrome most often occurs when

a: a person inherits a recessive allele

b: blood fails to clot properly

c: sickle-shaped cells become stuck in blood vessels

d: chromosomes fail to separate properly during meiosis

Answer as quick as ! kate is working on a project in her tech education class. she plans to assemble a fan motor. which form of energy does the motor convert most of its electric energy into? a. light energyb. motion energyc. sound energyd. thermal energy

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656(red) and 486 (blue). light from a hydrogen lamp illuminates a diffraction grating with 500 lines per mm, and the light is observed on a screen 1.50 behind the grating. what is the distance between the first-order red and blue fringes?

If you drive 12 miles north and 35 miles east, what is the direct distance between you and your starting point?