Approximately how many taste receptors are located on each taste bud

Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 → 2fe2o3. identify the value of x that will balance the equation.

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Which locations on the map are low-pressure areas? a b c d e