1. The graph below shows the winter precipitation in Arizona from 1995 to 2002. It also shows the survival rates of Arizona pronghorn fawns for
the same period.
Precipitation and Arizona
Pronghorn Fawn Survival
90
90
80
80
70
70
60
-
60
50
50
Precipitation (cm)
Fawns/100 Females
40
40
30
30
20
20
10
10
0
→
1995 1996 1997 1998 1999 2000 2001 2002

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

the answers are

c and c

answerambulatory;