When otter populations decline, how might the type of limiting factor affecting sea urchins change over time? Are sea urchin populations more likely to be affected by density-dependent or density-independent factors? Explain.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !

a symbiotic relationship with the mitochondria

d. groundwater flows through the subsoil and deposits minerals.