The diagram below shows the layers of a rock having an ammonite: which statement about the rock fossils is true? fossil y is older than fossil x. fossil z is younger than fossil y. fossil z existed over many periods of time. fossil y existed during the same period as the ammonite.

What two temperature scales do scientists use

*will mark brainliest for first correct answer* which of the following is most likely to affect the biodiversity of a park ecosystem? a. less rain than usual for several months b. ongoing pollution from a nearby factory c. park rangers plant a new type of tree d. disease wipes out an entire population

In cattle a single gene with two alleles determines fur color the fur can be red white or roan roan fur has both red and white hair which of the following statements is true a the allele for roan fur color is dominant over red and white fur color b the allele for red fur color is dominant over white and roan fur color c the roan and white alleles are expressed independently of the other d the red and white alleles are expressed independently of each other