What laundry detergent is the best ?

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?