1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kodGreya [7K]
3 years ago
13

The Precambrian eon is separated from the Phanerozoic eon in the fossil record because of

Biology
1 answer:
Usimov [2.4K]3 years ago
5 0

The Precambrian eon is separated from the Phanerozoic eon in the fossil record because of the sudden appearance of organisms.

Explanation:

Precambrian eon is the initial existence on earth that can be predicted by the study of rocks and remaining of fossils. It has been seen as the existence of skeleton in this era, before this era no such things has been observed, even the development of sexual reproduction.

The Phanerozoic era comes after the Precambrian era, more advanced kinds of fossils of animals had been observed in this era.  Phanerozoic era period of life on earth. Large organisms sudden appearance are seen in the Phanerozoic era i.e. First dinosaurs, mammals, fishes, angiosperms,first vertebrates etc.

You might be interested in
What are the end products of the electron transport chain?
solong [7]

The end products of electron transport chain are:

Water

Adenosine triphosphate (ATP)

Explanation:

  • Most of the free energy released during the oxidation of  glucose to CO₂ is retained in the reduced co-enzyme NADH and FADH₂, generated during the kreb's cycle.
  • Electron are released from these co-enzymes and are eventually transferred to an oxygen molecule to form water.
  • These transfer of electron from co-enzymes to oxygen molecule occurs through a series of protein complexes in the mitochondrial membrane. And the process is termed as Electron Transport Chain.
  • The large amount of free energy is released during the oxidation of NADH and FADH₂ is used in the production of ATP
6 0
3 years ago
Write a list of three interesting scientific questions. Is each one testable?
Mrac [35]
Hi lovely! Here are your scientific questions that are testable: 

Does the type of liquid affect how fast an ice cube melts? 

Does changing the temperature of water affect the buoyancy of an egg?

Does the thickness of the wire affect the power of the circuit?


Hope I helped!
7 0
3 years ago
PLEASE HELP!!! WILL GIVE BRAIN!!!!
Molodets [167]

Answer:

the grass grew taller and the hawk population declined

Explanation:

have a good day

5 0
3 years ago
Where would you find methanogens, which can function only in the absence of oxygen? Select the correct answer.
zimovet [89]
Methanogens can be found in B.human intestines

Roots of plants and synthetic fertilizers can contain oxygen or come into contact with oxygen.
8 0
3 years ago
Match the following terms and definitions 1. lysosomes and peroxisomes small storage sacs containing water, food, and waste 2. v
Readme [11.4K]

ok so I've done this problem before trust me:

A. bundles of microtubules that separate to opposite poles of a cell - CENTRIOLES

B. prepares protein-packed vesicles for release outside of the cell - VESICLES

C. small storage sacs containing water, food, and waste - VACUOLES

D. rough and smooth organelle that produces protein, steroids, and lipids - ENDOPLASMIC RETICULUM

E. tiny sacs at the end of the ER which contain protein - GOLGI COMPLEX

F. chains of protein fibers that provide support and shape - CYTOSKELETON

G. powerful enzymes used to process cellular activity - LYSOSOMES & PEROXISOMES

H. whip-like structures on cells that are used for movement - FLAGELLA

I. produces and assembles proteins - RIBOSOMES

5 0
3 years ago
Other questions:
  • Imagine that you have added a fluorescent tag to all of the amino acids inside of a bacterium. You then infect the bacterium wit
    5·1 answer
  • Shelby is a plant breeder who is trying to identify the cause of a disease among a group of trees. She observes that the organis
    5·2 answers
  • Which of the following statements about viruses is false?
    7·1 answer
  • Which of the following phrases best describes the results of natural selection? a. changes in the inherited characteristics of a
    11·2 answers
  • Why does the leaf need to be immersed in the boiling water?​
    14·1 answer
  • Pablo’s blood type is B+ while his mother’s blood type is O-. Which are the potential blood types of his father?
    13·1 answer
  • PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
    7·1 answer
  • Hi, please answer this
    10·1 answer
  • True or false are sun is now the main sequence of its life cycle
    8·1 answer
  • When you donate blood, you give around one pint. How much blood do you have in your body to start with?.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!