Which organism is the secondary consumer in this food chain

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur