Aperson's weight changes at a higher elevation because

the effect of gravity decreases as the person gets further away from earth

the effect of gravity increases as the person gets further away from earth

the person loses mass as the elevation increases due to their heavier breathing

the person increases mass as the elevation increases due the greater need for oxygen intake

the effect of gravity increases as the person gets further away from Earth

low freq = 100 mhz

low wavelength =101.7m

length = 3x10^8/freq

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.