2HCI(g) + I2(s) <=> 2HI(g) + CI2 (g) when the reaction is at equilibrium, some amount HI is added. The system then reaches equillibrium again. how does the concentration of CI2 change compared to the first equilibrium?

Na chemical reaction, activation energy increases the of the reactants. this outcome causes the particles to collide, which results in the of new products.

Polar bears give birth and hunt on sea ice. which of the following would polar bears survive during the melting of arctic ice? growing another layer of fur during summer migrate inland to search for different food sources staying put until the ice refreezes sticking to the usual diet of seals

Just on number 2 (all parts), and if you do answer explain in detail