Why do you think wheelchair-bound people with paralyzed lower limbs have thin, weak bones of the leg and thigh?

What is the 77 element on the periodtic table

Twind is considered to be an abiotic factor because it.?

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits