Which of the following statements is true of sexual selection?

How do children acquire most of the knowledge they need to survive?

What is the ultimate source of all new genetic variation?

Reciprocal altruism requires

The figure below compares Neanderthal skulls (orange box) with modern human skulls (blue box). What differences do you see?

Sympatric speciation occurs when two populations

There is no increased risk of choking when babies sleep on their backs.

Babies of mothers who smoked during pregnancy are at a higher risk of SIDS.

SIDS is caused by suffocation.

Nationally, 20% of SIDS deaths happened while the baby was in the care of a child care provider or relative.