Question

write one feature wch is common to each of the following pairs of terms/ organs a)glycogen & starch b)chlorophyll & haemoglobin c) gills & lungs d) arteries & veins

Answer 1

For (a) both glycogen and starch are formed from glucose and used to store it.
for (c) both structures are used in respiration
for (d) both arteries and veins help to conduct blood in organism

Answer 2

carbon. I think. Because it is a main feature in living things.