How does summation operate in a post-synaptic cell? a). it adds up all of the previous action potentials and releases one of that value. b). post-synaptic cells do not fire. c). input from many cells is required for it to fire. d). sodium ions are moved from one cell to the next in an additive way.

it means

miss jennifer is buying pencils in packs of 12, notebooks in packs of 16, and red pens in boxes of 20. she needs to have the same number of pencils, notebooks, and red pens. how many packs of each type should she buy?

answer mine : )

emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !