Whats the answer will mark brainliest

Zirconium has an hcp crystal structure and a density of 6.51 g/cm3. (a) what is the volume of its unit cell in m3? (b) if the c/a ratio is 1.593, compute the values of c and a.

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?