6. Look at the diagram of the human digestive system
Which part(s) is/are responsible for most of the mechanical digestion of food?
1 only
c. 2 only
b. 1 & 2
d. 1&4
a.

b) 1&2

Explanation:

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straight fertilizers

those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive