In what layer does the oldest organism become extinct first?

Q: How can you know what happened millions of years ago if no one was there to see it  Explain

A: Every living creature on the planet has the potential to evolve into something. Cells adapt to…

Q: AB D. Which taxon is most primitive? C.

A: Phylogenetic tree is a diagrammatic representation which determines evolution and  past record of…

Q: What major climatic and biological events happened during thePleistocene?

A: The environment throughout the Pleistocene was dynamic, changing dramatically in response to climate…

Q: Explain about fossil record

A: A group of fossils that have been analyzed, after which they have been sorted into chronological and…

Q: Why did giant dragonflies occur during the Carboniferous, but not now?

A: Fossils show that giant dragonflies and huge cockroaches were common during the Carboniferous…

Q: Which organisms came and went during the Mesozoic era?

A: MESOZOIC ERA:- It is the era when the conifers, reptiles, dinosaurs were present in plenty of…

Q: What does an age structure show?

A: Population ecology is the study of the populations in relation to the environment. It includes…

Q: How did the researchers use the DNA of living sponges to make conclusions about events occurring…

A: Answer- Every organism in a particular species have 99 percent same DNA sequence. Even among…

Q: What is the correct order of appearance in the fossil record, starting with the earliest: eukaryotic…

A: They consist of eubacteria and archaebacteria. Bacteria are simple prokaryotic organisms which are…

Q: Biologists discover a new organism. Upon viewing the organism they discover it is unitellular,…

A: As the mcq question is graded it can't be done as per Bartleby guidelines. So continuing with second…

Q: If original tissues of organisms are buried in the absence of ________ for long periods of time,…

A: Advent of Fossil:                  Fossils were the immortal remains of few parts of organisms,…

Q: What types of organisms flourished in the Cambrian?

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

Q: How did we define early sciences, which were practiced by humans during stone and bronze ages?

A: The early science or protoscience is the science of ancient history. Since,there were no ways of…

Q: How do we know the age of a fossil?

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

Q: Distinguish between relative and absolute dating of fossils

A: Relative dating doesn't assign a fossil a specific age. Instead, it places the fossil into the…

Q: Do all organisms fossilize after death?

A: Evolution is a continuous process and we are still evolving. Evolution is nothing but adapting to…

Q: What is the oldest fossils?

A: Ans: Fossils: The remaining of animals, fungi, plants, single cell living organisms or bacteria is…

Q: B Use the phylogeny to answer the question. Which is the most recent common ancestor of A and D? 1 2…

A: Phylogenetic tree  is a graphical representation of the evolution of organisms.  Here each branch…

Q: What Were the Earliest Organisms Like?

A: Evolution is a gradual process, and according to the theory of evolution, all species are related…

Q: Based on the fossil layers shown below, what can you infer about the past environment at this…

A: Fossils are the preserved impressions or remains of organisms that existed in the world a long, long…

Q: Coral is described as a foundation species, does this mean?

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: In the context of the phosphorous cycle, the arrows and indicate fossilization. Fill in the gaps in…

A: Few important terms which should kept in mind. These are as follows: As we know that the earth is…

Q: What interval of time does the Anthropocenerefer to?

A: The major events during the evolution and origin of life on the earth are divided into three eras.

Q: Describe what the early atmosphere was like and what cause a large amount of oxygen (O2) to build up…

A: Early atmosphere  Around 4.6 billion years ago, the Earth was formed from a heated mixture of gases…

Q: What is a transitional fossil?

A: Fossils are the preserved remains or remains from a once-living organism from a particular…

Q: What is used to determine phylogeny? a. mutations b. DNA c. evolutionary history d. organisms on…

A: The community of living (biotic) and non-living (abiotic) components of the environment is the…

Q: how do fossils form in different locations on earth

A: A fossil is any protected remaining parts, impression, or hint of any once-living thing from a past…

Q: Make a list of species that are suitable for collection and preservation. How do you prolong the…

A: *The species will be collected and preserved in loose and completely covered with plenty of liquid…

Q: How did the presence of molecular oxygen in the atmosphere affect early life?

A: Life originated nearly 3.6 billion years ago in the deep ocean.  The first organisms to be evolved…

Q: The fossil record shows that over time:

A: Fossils are the remaining parts or traces of old life that have been preserved by natural cycles,…

Q: Why is it important for organisms to adjust the timing of their life history to seasonal changes in…

A: Seasonality is a fundamentally significant part of natural fluctuation, and firmly shapes all parts…

Q: Which organism is an endosymbiont?

A: The organism is defined as the any individual entity that embodies the properties of life. It is…

Q: While examining a rock surface, you have discovered an interesting new organism. Which of the

A: Answer: Introduction: Basically, there are three types of organism which is based on the type of…

Q: List the types of rocks that form from rhizarian remains.

A: There are various types of rocks in which the main rocks comprises sedimentary rocks, igneous rocks,…

Q: Give some examples of living fossil.

A: All Fossils are evidence of evolution. The term “living fossil” is mainly used for describing the…

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: What is fossil?

A: Evolution is defined as the change in the characteristic traits of the organism in population over a…

Q: Which event in Earth’s historyeventually lead to the evolution of multicellular lifeforms?

A: The process of evolution of multicellular life from simpler, unicellular microbes was an important…

Q: What is the study of the past and present day distribution of organisms called?

A: Biology is field of science which involves study of living organisms  and biotic component on the…

Q: Which of the three domains is the least ancient?

A: The domain classification consists of prokaryotes, eukaryotes, and archaea. The prokaryotes include…

Q: Which group is the most ancestral?

A: All living things are descended from a single progenitor. The Theory of Common Descent demonstrate…

Q: What patterns in the fossil record would support that organisms have evolved?

A: Fossils: Fossils are considered to be the remains or the traces of the organism's activity that are…

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.