Write one feature which is common to each of the following pairs:
a) glycogen and starch
b) chlorophyll and haemoglobin
c) gills and lungs
d) arteries and veins.
Write one feature which is common to each of the following pairs:
a) glycogen and starch
b) chlorophyll and haemoglobin
c) gills and lungs
d) arteries and veins.