Question

1. which statement best describes a trend in tusklessness represented in the data table?

a. from 1988 to 1991 the frequency of tusklessness decreased.
b. from 1969 to 1989 the frequency of tusklessness increased.
c. from 1969 to 1993 the total number of tuskless females remained constant.
d. from 1989 to 1991 the total number of tuskless females increased.

1. which statement about how humans affected the elephant population is supported by the evidence provided?

a. the decrease in global ivory sales resulted in a decrease in tuskless male elephants.
b. the chance of producing tuskless males increased as a result of the tighter enforcement on poaching.
c. poaching has led to an increase in the tuskless trait among female elephants.
d. the demand for ivory has led to a decrease in the number of tuskless female elephants produci
(the data table has years: 1972, 1988, 1989, 1990, 1991, 1992, 1993 and corresponding numerical values in different rows.)

Explanation:

Step1: Analyze question 9 data

First, identify tuskless female counts: 1988 (43), 1989 (63), 1990 (104), 1991 (57), 1992 (59), 1993 (80).
Check 1988-1991: 43 → 63 → 104 → 57 (decreases from 104 to 57, so overall 1988-1991 is a decrease).
Check 1969-1989: 1972 tuskless females (25) to 1989 (63) → increase.
Check 1969-1993: 25 → 80 → increases, not constant.
Check 1989-1991: 63 → 104 → 57 → overall decrease, not increase.

Step2: Analyze question 10 options

Option a: Data shows tuskless males (1972:25, 1993:80) increased, not decreased. Incorrect.
Option b: No data supports tuskless males increasing from poaching enforcement. Incorrect.
Option c: Tuskless females rise from 25 (1972) to 80 (1993), matching poaching/ivory demand pressure. Correct.
Option d: Tuskless females increased, not decreased. Incorrect.

Answer:

1. a. From 1988 to 1991 the frequency of tusklessness decreased.
2. c. Poaching has led to an increase in the tuskless trait among female elephants.