Why might a new species be intentionally introduced into an ecosystem science

Which element is found in both dna and proteins

Matthew decided he wanted to hike up mount everest. on his way to the top, it began to snow and the temperature dropped to -10°f. matthew forgot to wear a heavy jacket so his body began to shiver beyond control. in this case, matthew's body shivering is the to a drop in temperature. * 0 points reflex stimuli responce environmental facto

How many types of rock can form from the rock cycle