Please help me and promise I will mark as brainiest I need it in ISEF please how much energy does the vehicle hydrogen fuel cell need to break hydrogen into ions ?!

V1t2 = v2t1 is an expression of who’s law

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.

What if it is did darwin used to support his theory of evolution