Hello.
Physical indicators of healthy water quality are temperature<span> and turbidity.
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<span>Answer: Cellular differentiation is responsible for one daughter cell becoming a sieve tube whereas the other becomes a companion cell. Cell differentiation occurs as different genes are switched on and off.
Hope this answer helps!</span>
Recessive because If one of your parents has it, you have a small chance of getting it too.
Photosynthesis.. hope I helped (:
