reproduction

914

Mule
If a mule is a cross between a male donkey and a female horse, what do you call a cross between a female donkey and a male horse?

918

Black widow spider and baby spiders
My Black Widow Spider's egg case hatched, releasing hundreds of tiny babies. While prey animals tend to have lots of offspring, most predators tend to have relatively few offspring. Why do spiders have so many babies?

922

White flower
Queen Anne's Lace is a common wildflower in the United States, but it is not native here. How was this plant introduced into the US?

929

Baby spiders
Another egg case from my Black Widow spider just hatched. Notice that the babies are brown and white, instead of the characteristic shiny black with red markings. Why?

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