Base your answers to questions one through three on the geologic cross-section below, which shows rock units one through seven that have not been overturned. Some of the rock units contain New York State index fossils. And uncomfortably exists between rock units five and six. 1. What evidence shown in the cross-section indicates that the basalt rock unit is the youngest rock unit?

2. Bed rock from which entire geologic time period is missing between rock units five and six?

3. Describe one characteristic of volcanic ash layer is an index fossils that make both of them good geologic time markers

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.

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