i think for 43 its a and for 45 its b
The modernization of US cities has caused a reduction in overall river pollution. The development of large farms has polluted the river through waste runoff. The use of the river for shipping has stayed relatively the same since 1800. The decrease in fishing in the river has led to a shortage of seafood products.
Answer:
South Africa was rarely visited by European and Islamic traders
A pair of related words that share the same root are minimum and minimal.
