Tresorting and recombinacon of gens during reproduccions important to increase the ability of all of the spring to acto teenwonen
c decrease variation and and help maintain a sebe population
increase variacion tat eradies species to adapt to change
decrease the chances of producing or spring that are adapted to the environment

they each offer a fresh glut of resources to the organisms that can arrive and exploit them. as individuals and new species continue to appear, they actively and passively alter the environment. competition for shared resources increases, local abiotic and biotic conditions shift, and the relative abundances of species change accordingly. the process is called ecological succession, and it is one of the earliest and most well-known concepts in ecology.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

a covalent bond, specfically triple bond