20. If these four areas are the only habitats where these organisms exist, 1 point which species is most likely to be negatively impacted by changes in the
environment?
ons
ve
The following table lists the population size of six species in four different areas.
Education
Area A
Area B
Species1 Species 2 Species 3 Species 4 Species 5 Species 6
20
50
70
20
20
20
0
60
80
40
20
0
0
0
20
0
0
20
60
30
80
110
0
20
Area C
Area D
O Species 1
O Species 3
O Species 5
O Species 6

Which of the following elements does soil need in the largest quantities to sustain plant life? a. copper b. iron c. nitrogen d. zinc

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Awoman whose sister tested positive for a specific mutation in the brca1 gene, which increases the risk for breast and ovarian cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. how should this woman be counseled? select one: a. she should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. she should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. she should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. she should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening