In 1909, Ernest Rutherford designed an experiment in which he shot alpha particles at gold foil. His observations did not match his predictions, which were based on the plum pudding model. Instead, what did he actually observe during his experiment?

the answer is 0.42 is that is an option. this question provides no info

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

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.