Whats the reactant gas in the aerobic respiration equation?

Oxygen

Reactants are the molecules that cause cellular respiration, in this case, this would be oxygen and glucose. Products are what develops during cellular respiration. Here, the products are carbon dioxide, water, and energy.

the answer for this question would be d. glaciers

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.