Which of the following periods is the earliest during which animals may have appeared? a. Ordovician period b. Cambrian period c. Ediacaran period d. Cryogenian period

Q: Bivalvia: Gastropoda: Cephalopoda: Nautiloidea: Ammonoidea: Coleoidea: Belemnitida: Mollusca: MYA…

A: Geological time scale is one type of calendar or tool by which we can understand the event of earth…

Q: Which of the following techniques examines the decay of carbo an object? O A. Radiometric dating O…

A: For the determination of the age of living or nonliving materials the scientist usually determined…

Q: Which of the following geologic periods is not part of the Paleozoic Era? the Carboniferous Period…

A: The objective of the question is to identify which of the given geologic periods does not belong to…

Q: Using tables 2.1 and 2.2 as references, fill out the following table. The first item is given as an…

A: Geological time scale Geological time scale is a representation of Earth's history.

Q: Which fossil layer is the youngest (name the geological period)?

A: The Cenozoic fossil layer is the youngest among the three layer.

Q: What is one way we can determine the age of fossils Adaptive Dating O Structural Dating Geometric…

A: Evolution is the process of slow and gradual change over a period of time. There are many pieces of…

Q: Which of the following eras in Earth's history is the longest? Precambrian Cenozoic Paleozoic…

A: A geological era divides eon into smaller unit of time. Geological era are further divided into…

Q: Describe the evolutionary significance of the Cambrian explosion.

A: Introduction  Cambrian explosion event was occurred nearly 541 million years ago during the Cambrian…

Q: The Cambrian explosion is a conundrum: how can the long prior history of the phyla, revealed by…

A: Evolution is change in the heritable qualities of natural populaces over progressive ages. These…

Q: Which of the following statements is incorrect in the context of fossilization? Minerals dissolved…

A: The process in which part or whole of animal or plant is being preserved in hard form is known as…

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: 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: Describe six types of fossils and how they form. What presentenvironmental conditions might preserve…

A: Fossils: Fossils are considered to be the parts or the remains of the organisms that are preserved…

Q: Given the nautiloid suture pattern what can you infer about their habitat in the past and present?

A: Living beings, according to numerous "evolutionary theories," modify their physical and anatomical…

Q: 5. The Mesozoic Era extended over which of the following time periods in the fossil record? A. the…

A: Answer - B. The age of reptiles", from 251 million years ago to 65 million years ago.

Q: How would the appearance of protocells have represented a key step in the origin of life?

A: Introduction  Origin of life on earth can be traced back to 3.4 billion years ago and as we now know…

Q: When was the first mass extinction?

A:

Q: Fossils are remains of ancient organisms found in the rocks are categorized depending on their age.…

A: The remnants and evidence of ancient species are known as fossils. The preserved remnants or traces…

Q: Lay all the animals out on your desk and separate them into two groups by presence of a backbone.…

A: The act of classifying living things entails grouping them into categories. Any group's members have…

Q: The Cambrian Explosion occurred due to the widespread adoption of bilateral symmetry and the…

A: INTRODUCTION The Cambrian explosion or Cambrian radiation was an occasion approximately 541 million…

Q: Radiometric dating uses the decay of              to             to determine how old fossils of…

A: Radiometric dating determines the age of historical objects in years via measuring the occurrence of…

Q: Which of the following is associated with the Cenozoic era? O a. Warmer planet O b. Different…

A: The answer is given below:    The first two are associated with the Cenozoic era.

Q: In the figure below which letter is pointing to the ZYGOMATIC ARCH

A: The skull is an important and anterior component of the axial skeleton that houses the components of…

Q: What kinds of tool artifacts were found in the cave near Denisovan specimens?    A. Lithic…

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

Q: Cenozoic Era

A: The Cenozoic era began about 66 million years ago and continues into the present, is the third era…

Q: Describe an example from the fossil record that showshow life has changed over time.

A: Evolution is the process of heritable change in the characteristics of an organism. Such changes…

Q: Which of the following is characteristic of the end of the Paleozoic Era? a There was a mass…

A: As experts believe, the Earth was formed as a result of the Big Bang Explosion. The geological time…

Q: differetiate fossils and trace Fossils.

A: Fossils: - Fossils are mortal remains of the organisms who lived before. It means that the skeletons…

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: Organism A lived from 410 to 60 million years ago. Organism B lived from 200 to 100 million years…

A: In case of human or animal remains from the past 50,000 years, researchers focus at levels of carbon…

Q: Use the following figure to answer questions 2 and 3. mya - million years ago 1,400 mya -1 bilkan…

A: Earth was formed in our solar system along with other planets, and its age is about one third of…

Q: List 5 examples of types of fossils

A: Fossils are the preserved dead remnants trapped in rocks or layers of soils of living organisms that…

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: why is it not 55-34; Eocene if the Eocene period was 55 million - 34 million years ago as opposed to…

A: The Euprimates are the modern primates with characteristics of grasping hands and feet, and reduced…

Q: Which fossil layer is the oldest (name the geological period)?

A: When geologists study 3 rock layers (and their fossils), there is a good chance that the upper layer…

Q: Feathers, which evolved from modified reptilian scales, show up in the fossil record at the end of…

A: Made from soft tissue, it is very rare to find the fossils of feathers as they cannot survive over a…

Q: Most of the ATP created during aerobic cellular respiration occurs along the cristae of the…

A: The aerobic cellular respiration involves oxidation of glucose to release energy in the form of ATP.…

Q: Why do we need to know the age of a fossil?

A: Fossil is preserved remains of any living things from the history such as bones,shells ,DNA remnants…

Q: Consider three important fossil SITES in Canada.   Name them.  Put them in order from the oldest to…

A: Fossil is defined as a preserved remains or imprint or tissues of the prehistoric organism. They are…

Q: During what era did pangs begin to break up

A: During what era did pangs begin to break up? Answer. B. Triassic

Q: Period was of unique importance to all ause during this Period aquatic vertebrates, like lobe finned…

A: Answer. Geological time scale is a chronological sequence of geologic and evolutionary events…

Q: Mammals quickly diversified into their various recognizable forms (i.e. cats, dogs, bears, ocean…

A: The group of vertebrate animals that are characterized by the presence of mammary glands is termed…

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.