Em condições normais e encontrando-se desperta, uma pessoa pode parar de respirar quando desejar fazê-lo. A pessoa não seria capaz de produzir anóxia total (completa ausência de oxigênio) simplesmente parando de respirar porque

your a sped   no one cares

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.

the answer is a) a shiprock was formed by igneous process