Which statement is true concerning blood cells? < br /> < br /> a. white blood cells take oxygen to body tissue.< br /> b. red blood cells contain a protein that binds with oxygen.< br /> c. white blood cells contains a protein that releases oxygen.< br /> d. white blood cells contain hemoglobin

hey there!

so, when you eat, your teeth chew and grind food into smaller pieces. this is mechanical digestion. then reactions aided by digestive enzymes break down large food molecules into smaller molecules. this is chemical digestion. the two processes change the food into simpler substances that can be used by the body for raw materials and energy.

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tobey

lets get this bread mom