A scientist found that a Petri dish from an experiment has not been cleaned several days earlier in the dish she discovered a bacteria culture that she had not seen during the experiment how could you gather evidence to support a claim about whether bacteria have developed from the material left from the earlier experiment

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

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.

Which substance has non polar covalent bonds