Question

Using this graph, and the following question:

1.Carbon is the basic building block for all forms of life on ...



After reviewing the graphic, select the best response based on that data shown.

a
By mass, humans are 2% calcium.
b
By volume, humans are 65% oxygen gas.
c
Elements making up the human body are mostly potassium and carbon.
d
Humans are composed primarily of water.

Answer 1

c
Elements making up the human body are mostly potassium and carbon.