What did you include in your response? Check all that apply.
Scientific knowledge develops through making
observations about the natural world.
An observation may generate a scientific question,
which may lead to a hypothesis.
The hypothesis can be tested through
experimentation.
The results of experimentation lead to changes in

in 1972 the fluid—mosaic membrane model of membrane structure was proposed based on thermodynamic principals of organization of membrane lipids and proteins and available evidence of asymmetry and lateral mobility within the membrane matrix [s. j. singer and g. l. nicolson, science 175 (1972) 720–731].

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies

c.           is the correct answer

answer: b

coz red blood cells marrow and circulates the body for 120 days.