What are some sources of oxygen

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

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

Which of the following is a good strategy when it comes to desserts