Give two reasons why fuels tunkers have warning and safety signs pasted at their back

Explanation:

There are two main reasons for this, first one is to let all workers that may have to open valves to the tanker know that the contents inside can be dangerous/hazardous and to handle with extreme care. The second reason for these safety signs is for traffic. These signs let other drivers know that the tanker is highly dangerous and is a way of telling the other drivers on the road to be extremely careful and allow for enough space so that there is a less likely chance of an accident occurring and the contents of the tanker leaking.

no questions on whether they are allowed that right

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.