According to the fossil record the first evidence of life was ___ years old: a) 3.5 Billion b) 4.5 Billion c) 2.5 Billion d) 3.5 Million e) 2.5 Million
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According to the fossil record the first evidence of life was ___ years old: a) 3.5 Billion b) 4.5
Billion c) 2.5 Billion d) 3.5 Million e) 2.5 Million
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- What characteristic(s) of the fossil record make(s) it strong support of evolution? a) It has fossils of many species in it that are not found on earth today. b) It is has a complete record of every form of life ever existing c) Species appear in sediment layers in a consistent pattern d) All fossils are similar to living forms found in the same area as the fossils Group of answer choices A. b and d B. a and b C. c and d D. a and c E. b and cAncient mammals became abundant during this period: a) Jurassic b) Triassic c) Carboniferous d) OrdovicianPenguins are flightless birds, however, they still have wings. This is an example of a (the) _______. A) Convergent Evolution B) Developmental homology C) HomoplasyD) Law of SuccessionE) Vestigial structure Then explain why the answer is correct and the others are not
- The fossils in line 4 are blank the ones in line 1 of the diagram. A) much older B) much younger than C) slightly older than D) slightly younger thanWhich evolutionary pattern is represented by the similarities between these two organisms that live on separate continents? a.) coevolution b.) convergent evolution c.) directional evolution d.) divergent evolutionAn organism dies,and its body leaves an impression in mud. Over time, the mud hardens into rock, and the impression becomes a fossil. Which kind of fossil was formed? A) cast B) mold C) original material D) trace fossil
- The first single-celled organisms on Earth probably evolved (a) 3,700 years ago (b) 3.7 million years ago (c) 3.7 billion years ago (d) We have no idea when the first life on Earth appeared.How do we know how old a fossil is? A) We compare it to current species and see how much has changed B) We see how much soil is on top of it C) We use radiometric datingOne type of fish fossil is found only in a rock layer near the bottom of a canyon, while a different kind of fish fossil is found only in a rock layer 4,000 feet higher, near the top of the canyon. Which statement would a scientist most likely offer to explain this situation? A.) The fish in the lower layer lived in the deep sea. While the other fish lived in shallow water. B.) The fish in the upper layer lived a healthier life than the other fish. C.) The rock in the lower layer is denser than the rock in the upper layer D.) The rock in the upper layer must have formed in freshwater E.) The fish in the upper layer lived more recently than the other fish. The Geologic Time Scale is a systematic chronological dating process that relates geological strata to time. This methodology is commonly used be geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events that once occurred in history. Which of the following statements can be…
- Indicate which of the following statements concerning biostratigraphy is true. a) fossils can only be dated if they contain some amount of C14 isotope b) fossil dates are more accurate than those obtained via radiometric dating c) fossils can only be dated in ancient oceanic sediment layers d) fossils can only be dated back to a few thousands of years ago e) fossils can only be dated relative to one anotherA scientist has developed 3 different phylogenies that describe the relationships between different species of elephants. In Phylogeny A, there are 4 total changes that resulted in 4 different species. In Phylogenies B and C, there are still 4 total species represented, however, they take 6 and 8 changes, respectively, to create them. Which phylogeny is probably correct? a.)Phylogeny A b.)Phylogeny B c.)Phylogeny C d.)All of the above, given every clade contains the same organismsWhich of the following shows the correct sequence of periods in the Mesozoic era: a) Triassic, Jurassic, Cretaceous b) Cretaceous, Jurassic, Triassic c) Jurassic, Cretaceous, Triassic d) Triassic, Cretaceous, Jurassic