15Despite being ancient, unique, and fascinating,______ they predate the Cambrian Explosion, causing confusion about their role in evolution, and their fossil preservation is complex, making their study difficult.15 Mark For Review15Which choice completes the text so that it conforms to the conventions of Standard English?A) Ediacaran organisms like Dickinsonia and Spriggina from the Flinders Ranges in South Australia pose two challenges to scientists:B) There are two challenges posed by Ediacaran organisms like Dickinsonia and Spriggina from the Flinders Ranges in South Australia:C) Two challenges posed by Ediacaran organisms like Dickinsonia and Spriggina from the Flinders Ranges in South Australia:D) the Flinders Ranges in South Australia is exhibiting Ediacaran organisms like Dickinsonia and Spriggina that pose two challenges to scientists:

15In primatology, Jane Goodall stands as a luminary, primarily acclaimed for her groundbreaking research on chimpanzees. Yet, her intellectual curiosity extended beyond primates, manifesting in an in-depth study of ______ within ecosystems, particularly in regard to their function as pollinators, a topic that helped broaden the scope of her invaluable contributions to environmental science.15 Mark For Review15Which choice completes the text so that it conforms to the conventions of Standard English?A) insects, and their vital roles,B) insects, and their vital rolesC) insects and their vital rolesD) insects; and their vital roles,

Five sentences related to a topic are given in the question below. Four of them can be put together to form a meaningful and coherent short paragraph. Identify the odd one out. Choose its number as your answer and key it in.Remarkably, extreme events of diversification and extinction happen more frequently than a typical Gaussian distribution would predict.Throughout life's history on earth, biological diversity has gone through ebbs and flows – periods of rapid evolution and of dramatic extinctions.Evidence for these ecological changes is found throughout the early and middle Cambrian fossil record but is even more apparent in deposits of exceptional preservation.We know this, at least in part, through the fossil record of marine invertebrates left behind since the Cambrian period.Instead of the typical bell-shaped curve, the fossil record shows a fat-tailed distribution, with extreme, outlier, events occurring with higher-than-expected probability.

On which species did Darwin spend eight years study?*1 pointBarnaclesEarthwormSnailFinches

14The Devonian Hunsrück Slate in Germany, renowned for its ancient coral reefs, constitutes a marked divergence from traditional paleontological repositories. Conventional resources, frequently characterized by fragmented or incomplete fossil records, have compelled paleontologists to adopt a more passive role, engaging in the piecemeal construction of ancient environmental contexts. This is due to the elusive nature of the information provided by nature itself but often comes in the form of partial or incomplete clues. In effect, scientists are necessitated to embody the role of historical detectives, tasked with extrapolating from sparse information to formulate credible hypotheses pertaining to the nature and characteristics of ancient ecosystems. The Hunsrück Slate, on the other hand, ______. 14 Mark For Review14Which choice most logically complete the text?A) is devoid of the integrative quality essential for scientists to perceive and interpret the resources in a holistic manner.B) offers a more comprehensive data set, enabling scientists to more robustly investigate the intricacies of these prehistoric marine habitats.C) is so widespread that it necessitates only marginal exertion on the part of scientists to extrapolate insights from these resources.D) encompasses such unrefined fossil records of ancient ecosystems, inciting scientists to formulate more radical hypotheses regarding the conditions of primeval eras.

The discovery of dinosaur fossils provides us with intriguing insights into Earth's prehistoric past. Unfortunately, as _____ point out, erosion and other geological processes can damage fossils, making them harder to study.16Mark for ReviewABCWhich choice completes the text so that it conforms to the conventions of Standard English?Apaleontologists, Maria McNamara and Derek Briggs,Bpaleontologists Maria McNamara and Derek BriggsCpaleontologists, Maria McNamara and Derek BriggsDpaleontologists Maria McNamara, and Derek Briggs