Aluminum is an element. which best describes what makes up a sample of aluminum?

a-one kind of atom
b-two different kinds of atoms
c-all carbon-based atoms
d-a carbon atom and non-carbon atoms

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes

Find the mass of the cone using the triple beam balance. a. 543.0 g b. 542.0 g c. 504.28 g d. 502.8 g select the best answer from the choices provided a b c d