simply the human poulation and the life of other species is directly proportional; meaning we humans have some necessary needs to full fill in order to survive in this world like food.now we use both plants and animals as our food sources and as our number increases the food consumtion also increases and we indanger the life of both plant and animal species since we are omiveres(plant/meat eaters). the other basic thing we need is shealter again when the number of the human poulation continues to grow,people will need more space to live on ......then they start widening their territorys w/t cutting down trees.so generally if the nuber of human pop increases or continues to grow it will destroy more species in order to survive.