PLLLZ HELP!!!Which of the two largest cavities forms earliest in fetal development? Why do you think that cavity, and its contents, develops before other body parts?

Amylase becomes denatured at a temperature of 80°c. during an experiment to study the effect of varyingtemperature on enzyme activity, amylase’s reactivity with starch was measured at body temperature (37°c), andthen again at an increased temperature of 42°c. how would this increase in temperature affect the experiment

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?