If there are no rocks in a desert then the prey would rapidly decrease due to no rocks for shelter or hiding, once they do food will be scarce for the predators causing the predator population to also decrease meaning that the life in the desert will decrease by 80%, leaving barely any wildlife left.
<span>Extinction occurs when a CS is no longer paired with a US.
Hope this helps :)</span>
Choosing to breed two naturally fast horses would result in an amazing race horse or breeding a horse with good cardiovascular health with a fast horse would result in an even better race horse!
