Why was the Mesozoic era extinction significant to the history of mammals? a. As photosynthesis slowed, meat-eating mammals prevailed. b. Fewer plankton species meant more open ocean ecosystems for large, aquatic mammals. c. Dinosaur extinctions opened up new habitats to mammals. d. Only the smartest primates knew how to survive the extinction.

Q: The extinction of dinosaurs left gaps in the early ecosystems on earth. Explain briefly the…

A: Evolution is change in the species over a period of time.

Q: Which of the following events did NOT occur during the Cenozoic?

A: The Cenozoic Era is a geological era that began around 66 million years ago and continues to the…

Q: What was more important for the invasion of the land by vertebrates during the Paleozoic: becoming…

A: Vertebrates are those animals that are characterized by the presence of well distinguished backbone…

Q: hat do scientists think the primitive Earth w

A: Researchers believe that early earth's atmosphere consisted of water vapor , carbon dioxide , carbon…

Q: Explain the reason why modern biologists can more easily accept that a mammal can have some reptile-…

A: Mammalia is the class of mammals. They are warm-blooded creatures that control the terrestrial…

Q: describe the key adaptation that were associated with the transition from aquatic life to…

A: Adaptation is mechanism by which organism adjust themselves according to the need of environment…

Q: Use the information and diagram to answer the following question. Scientists discovered a…

A: Life started in water and hence when life transitted from water to land, there were and still are…

Q: Which statement is true about fossilization? (A) (B) (C) (D) Only animals with backbones…

A: Fossilization is the process of preserving plant and animal remains over a period of time by means…

Q: In the Paleozoic era, the first vertebrates to live on land were thea. amphibians.b. reptiles.c.…

A: The Paleozoic era is the earliest of three major geologic eras found in geologic periods which…

Q: Humans evolved from a. monkeys. b. chimpanzees. c. gorillas. d. an ancestor shared with chimpanzees.

A: The change in the heritable characteristics of the species across many generations is called…

Q: The fossil nicknamed Lucy was a(n)a. early Homo.b. australopith.c. ardipithecine.d. modern human.

A: Answer: Introduction: Fossils are produced in many diverse ways, but that are widely produced at the…

Q: Fossilsa. are the remains and traces of past life.b. can be dated absolutely according to their…

A: Answer is a.) are the remains and traces of past life.

Q: The____ tool industry characterizes the Middle Paleolithic / Middle Stone Age and spans the time…

A: Introduction Evolution is the process of gradual, heritable change in the characteristic of the…

Q: According to "Our Earliest Ancestors", what time period is being discussed in this video?    A.The…

A: The Eocene, Miocene, Pleistocene, and Paleocene are all epochs in the geologic time scale. They are…

Q: According to " Denisovans: Decoding the Secrets of Our Mysterious Ancient Cousins”, what kinds of…

A: The question is asking about the types of tool artifacts that were discovered in the cave where…

Q: Choose the best below ? Which of these steps probably occurred first in the chemical andbiological…

A: For testing of old hypotheses regarding the existence of life was done by the advances in various…

Q: The map below shows how the continents once were connected together (link to bigger map if you need…

A: Evolution is a step by step and gradual process that took millions of years to attain stability. It…

Q: Vertebrates Vertebrates Cartilaginous fish Scales and amniotic egg Land and water Bony fish ఈఅం Ray…

A:

Q: When was the first mass extinction?

A:

Q: Compare and contrast the difference between a prehistoric organism and modern-day organisms. What…

A: Answer

Q: Which of the following is not a hypothesis used to describe the sudden change in the diversity of…

A: The term "Cambrian explosion" refers to a time when bilaterally symmetrical (bilaterian) animal…

Q: Why might fire have been important for the survival of Homo sapiens?

A: The species of human beings have evolved over a course of time. The living modern human species have…

Q: Describe one hypothesis that explains the extinction of large mammals in the late Pleistocene.

A: The Pleistocene, sometimes known as the Ice Age, is the most recent glaciation-filled period on…

Q: video

A: Neanderthals were an ancient human species that lived in Europe and parts of western Asia around…

Q: During the ____ epoch, there were fewer ____ and more ____, a reversal in the relative…

A: Geological Time depicts the geological history of Events on Earth that occurred in a specific time…

Q: Explain if cetaceans evolved through change over time from ancestral mammal that lived on land.

A: Cetaceans are aquatic marine mammals like the species of whales and dolphins. They belong to the…

Q: Plant life first appeared on land during which of the following periods? a. Cambrian period b.…

A: The palaeozoic era was divided into six periods and these were as follows: Cambrian Ordovician…

Q: Use the scenario to answer the question. A fossil indicates that whales might have started out as…

A: There are many signs in a whale's anatomy that their ancestors lived on shore. Hippos and whales…

Q: u nequenly. d. Consumers once outnumbered producers. 9. Birds and reptiles are similar in that they…

A: The branch of biology that deals with the structure, function and evolution is called zoology. It…

Q: Which of the following observations best supports the conclusion that two animal species evolved…

A: The strongest evidences for proving that two animal species are evolved from the common ancestor is…

Q: Cite and explain the factors that led to an enormous bloom of animal diversity in the Paleozoic era.

A: Paleozoic era began somewhere around 541 million years ago and ended around 252 million years. The…

Q: The position where a spinal cord enters the skull provides evidence about whether a fossil…

A: Skeletal features are important in describing evolutionary changes.

Q: This tropical area that existed 37-29mya provided was home to many various species, including…

A: The Rukwa Rift Basin is an endorheic rift basin in southwestern Tanzania that includes Lake Rukwa.…

Q: According to the web article 'This Is Probably The First Mammal...!' scientists believe that if…

A: Climate change refers to a long-term changes in the average conditions such as temperature,…

Q: Search the Internet about the evidence suggesting that birds and dinasours are closely related. If…

A: Birds are evolved from theropod dinosaurs which  share over 100 trait. Scientists discovered that…

Q: Imagine you were asked to excavate fossils from deposits near the top of the Grand Canyon and near…

A: The Grand Canyon is a great place for researching Earth's geologic history since the canyon's rocks…

Q: How would the evolution of teeth and bones composed of calcite or aragonite, instead of dahllite,…

A: Aragonite and calcite are the two types of calcium carbonate crystals  that form the teeth of some…

Q: Which hypothesis is plausible for the extinction of the dodo bird? Select all answers that apply. O…

A: Dodo bird was a bird that was found on this planet in the 17th century and they were unable to fly.…

Q: According to " Denisovans: Decoding the Secrets of Our Mysterious Ancient Cousins”, what is the most…

A: The question is asking for the most likely reason for the extinction of Denisovans, an ancient human…

Q: Which of the following events did NOT occur during thePrecambrian?a. Formation of the ozone layerb.…

A: Introduction The Precambrian Period, which predates the current Phanerozoic Eon, is the earliest…

Q: Fossils that serve as transitional links allow scientists to a. determine how prehistoric animals…

A: Transitional fossils play a basic part in understanding the developmental history of life on Earth.…

Q: According to "The Life and Death of a Neanderthal (Shanidar 1)”, what is the time period being…

A: The correct answer is D. PleistoceneExplanation: Neanderthals:During the Pleistocene era, a unique…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.