What is a possible risk from darkroom chemicals?
a. burns
b. lung problems
c. cancer
d. all of the above

What type of aid does nigeria receive? short term, tied, voluntary, bilateral, multilateral or long-term?

Suggest 3 different reasons why there is an ageing population in the uk .

According to the article about the zhou dynasty, this dynasty was broken into different eras because its capital changed from place to place. how many different eras were there in the zhou dynasty? a. two b. six c. ten d. fourteen