As light intensity increases, the rate of photosynthesis increases, whereas a decrease in light intensity decreases the rate of photosynthesis, because light is a necessary factor for photosynthesis
All cells are similar in composition and metabolic activities
Answer:
- In claustrophobic laboratory a dog is forced to breathe tobacco smoke.
- In another lab, a rat is squeezed into a narrow glass tube and forced to breathe in tobacco smoke.
Both of these sentences hook to draw the reader's attention.
These are such cruel acts done by scientists, action shall be taken against such insane work. Tobacco is so damaging to humans, then just imagine its consequences on these poor animals. Bioethics rules shall be kept in mind before doing such cruel acts.
B. It allows some molecules to enter the cell and blocks entry to others.
