Some animals have no gills when young, but then develop gills that grow larger as the animal grows larger. what is the reason for this increase in gill size?

What is a cordon and where is it found

Does mitochondria still meet the definition of a eukaryote why or why not?

The table below shows the number of foot bones in some horse fossils.horse fossil recordhorse fossil number of foot bonesp 19q 17r 24s 13ancient horses had more bones in their foot then present-day horses. the present-day horse has 11 foot bones. what is the correct order of evolution of the horse starting from the youngest fossil? a. q p r s b. s r p q c. s q p r d. r p q s