Answer :

Explanation : To find density, we can use the formula as given below;
density ρ =

Here, we have the mass as 89.6 g and the volume is ,
on calculating we get,
This means that the density of the copper sample is
Because you get most of the vitamin D for the sun and it can help or damage your skin.
Answer:
Option D is correct
Explanation:
Luria broth contains yeast concentrate so it would show a marked B- galactosidase activity which is an enzyme that catalyzes the hydrolysis of B- galactosides including lactose and it is the first step of lactose fermentation.
Internal changes, like body muscle decreases; the size, shape and function that occurs in our body to function in a mature system.(phenotype) >hope that help