Need help asap

A sodium channel opening on a post-synaptic neuron would cause ___.

There is only one copy machine at your office. you have to make 1000 copies of an expense report. after you begin copying, two other employees show up in the copy room. each has to make only 10 copies each. what is the proper etiquette in this situation?

Most of the phosphorus on earth comes from ?

After fertilization zygote blank a) disappears b) begins to changes c) remains the same