in the reaction 2Na+2HCl>2NaCl+H2.if 500 ml of 0.2 molar HCl has entered into the reaction as g Na has acted

6.4 cm (max) - 25 cm (min)

the answer is d.) potassium

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101