Plz and thank you, The diagram below shows the layers of a rock having an ammonite: Which statement about the rock fossils is true?

a. Fossil Y is older than fossil X.
b. Fossil Z is younger than fossil Y.
c. fossil Z existed over many periods of time.
d. Fossil Y existed during the same period as the ammonite.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

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.

The graph below compares the rates of reaction of a burning candle and an exploding firework. comparing chemical reactions what can you conclude from the graph? the reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires less energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs more rapidly than the reaction that causes a candle to burn. mark this and return