Aprocess that absorbs heat is a(n) process.
a. exothermic
b. endothermic
c. polythermic
d. ectothermic

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

Which of the four hypothetical substances you investigated would be most harmful to living organisms? 50 points!

Which of the following notations would be the appropriate and final way to display the formula for magnesium chloride a. mgcl2 b. mg+2cl–1 c. mgcl2 d. mgcl