Using the chart and question 32 of your study guide, speckled and striped beans (mice) had the best survival rates. Why?

Carlos discovered a fossil within a particular layer of rock. What type of rock was this fossil most likely found in?

Position of land masses of early Pennsylvania can be determined through fossil records because we know that most plants presently live on land. From this information, we can infer?

Scientists have found fossils of ocean-dwelling or marine animals in the mountains of Pennsylvania. What does finding fossils of marine animals in these rock formations tell us about Pennsylvania's past?

Trilobites were abundant in Pennsylvania. Trilobites were among the first of the arthropods, a phylum of hard-shelled creatures with multiple body segments and jointed legs. Their fossils first appeared in early Cambrian period about 570 million year

The image for number 14 of your study guide shows the carbonized remains of a fish from the Green River Formation, Wyoming. What is a limitation of this type of fossil?

Several factors affect an organism's ability to fossilize. Which environment would increase the chance of fossilization?

Consider the model (#16) for natural selection. In a population of living things, genetic variation exists. One source of variation is mutation. Which scenario listed here could be a mutation that causes members of a population to die out?

Consider the model (#!17) for natural selection. Describe a scenario that represents this model of natural selection.

Number 18. One is populations are large and in the population variation exists. Consider this population of disease-causing bacteria. What is the MOST LIKELY cause for variation in this population?

Darwin hypothesized that there are definite steps to natural selection. Consider the model here. Use the Roman numerals (I - III) to guide you through the steps. Which is an accurate description of Darwin's hypothesized theory of natural selection?

#20 Is global warming causes flooding and the once marshy habitat is underwater. Which group would MOST likely survive and reproduce in this new habitat?

Which hypothesis provides the best explanation as to why the Manchester Peppered Moth populations changed over time?

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