Placement of legend is the correct answer.
Vein because they have valves to prevent back flow of blood.
B. is the correct answer I think
Answer:
Antibiotics killed the bacteria that cause infection but they can also kill beneficial bacteria . thus Ms ABC developed a yeast infection and diarrhea after course of antibiotics because antibiotics distrub natural balance of beneficial bacteria in her intestine.
Answer: c. Enzymes slow the reaction so more products can be produced
Hope this helps :)
