What dosage compensation mechanism is employed by female placental mammals?

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

Which example describes a mutualistic relationship between organisms? young wasps prey on caterpillars. crabs eat the remains of dead fish. tapeworms feed on food in the intestines of cats ants protect a tree on which they feed.

In "the pig," what is the main effect that the piglet initially has on kibuka?