The development factored into the development of complex organisms.

ozone
oxygen
cyanobacteria
all of the above

the end of the paleozoic era was signaled

the development of humans
mass extinction of land and sea animals
the development of organisms with hard parts
both a and b

reptiles evolved from an ancestor of amphibians that developed a(

egg with a strong outer shell that kept it from drying out
hard set of teeth
thick eyelid
long tail

The development of Ozone, Oxygen, Cyanobacteria factored into the development of complex organisms. The correct option is the last option.

The end of the Paleozoic Era was signaled by mass extinction of land and sea animals. The correct option is the second option.

Reptiles evolved from an ancestor of amphibians that developed an egg with a strong outer shell that kept it from drying out. The correct option is the first option.

If these are the missing choices: a. to determine skin temperature, place the back of your hand against the patient's skin.b. determine body temperature by touching the patient's hands and feet.c. skin temperature will tell you very little about this patient's condition or well-being.d. the patient's skin temperature and color will likely be warm and red.my answer is: a. to determine skin temperature, place the back of your hand against the patient's skin. using the back of the hand to check for temperature rather than the palm is more effective because the back of the hand has more nerves that can feel and transmit the temperature than the palm.