Which of the following statements about levels of biodiversity is correct? a. Genetic biodiversity is a measure of the total number of genes in a community
b. A narrow distribution of habitats leads to an increase in species diversity.
c. Global hotspots are areas where species diversity is thriving due to habitat restoration.
d. A population with high genetic biodiversity is better able to respond to environmental stressors.

The diagram below shows the layers of a rock having a trilobite: a rock column labeled rock is shown. the column has three layers. the bottommost layer of the rock has one shaded rhomboid shape, the middle layer has a rhombus with a diagonal along with two identical organisms marked as, trilobite, in the key, the top layer has two semicircles. a key is shown on the right side of the diagram. the shaded rhombus is marked as a, the rhombus with the diagonal is marked as b, the semicircle is marked as c which statement about the rock fossils is true?