The term carcinogen refers to: a
the spread of disease.
b
the chemicals used to stop the spread of cancer.
c
a term that means the same as an aneurysm.
d
a substance that produces cancer.

D- a substance that produces cancer

Explanation:

carcino- means cancer and -genic means creating/causing. Put together, it means cancer causing.

the answer for this worksheet are the following:

1.            u

2.            e

3.            i

4.            o

5.            e

6.            h

7.            l

8.            e

9.            s

10.    y

11.    d

12.    e

13.    v

14.    r

15.    f

16.    r

17.    l

18.    c

then the given to crack is 6 12 3 9 15 1 17 7 10 14 8 18 4 13 2 16 5 11

the answer is he is fully recovered