Although _[blank]_ makes up 78% of the earth's atmosphere, it is not directly usable by most living organisms.
carbon dioxide
nitrogen gas
phosphorus
water vapor

Through an uplift under the earth's crust at a divergent boundary a is formed. a. cliff c. plateau b. fault d. mountain select the best answer from the choices provided a b c d i know the answer is not b

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

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