measuring biodiversity in a community can ecologists predict the stability of an ecosystem. more biodiverse communities can make ecosystems more resilient to changes from natural or human origin. calculate the simpson's diversity index for a community with the following species distribution:
81 pine trees
19 oak trees
10 maple trees
a) 0.22
b) 0.42
c) 0.58
d) 0.81

The table below shows the number of foot bones in some horse fossils. horse fossil recordhorse fossil number of foot bonesp 19q 17r 24s 13ancient horses had more bones in their foot then present-day horses. the present-day horse has 11 foot bones. what is the correct order of evolution of the horse starting from the youngest fossil? a. q p r s b. s r p q c. s q p r d. r p q s

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

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?