The ability of an organism to maintain internal stability is now as 1 metabolism

2 homeostsis

3 circulation

4 excretion

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l

the correct answer would be b) volume versus temperature, because they are also directly proportional.