False biodiversity is the ecosystem
Sea levels<span> drop globally </span>during an ice age<span> (also called a glacial period) as seawater is taken up in the </span>ice<span> sheets. There is decreased evaporation </span>during an ice age<span> and therefore less rain. </span>Ice ages<span> (also called glacial periods) are therefore usually, but not always, associated with an increase in aridity (dryness). So its B. Hope this helps :))</span>
B. I gives evidence that the continents used to be connected.