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
miss Akunina [59]
2 years ago
7

Starting with Precambrian time, briefly describe how life on earth has changed over Earth's long history.

Biology
2 answers:
4vir4ik [10]2 years ago
4 0

Answer:

-New habitats created

-organisms evolved

-new organisms formed

-organisms become extinct

Explanation:

lara [203]2 years ago
3 0
<span>Early pre-cambrian period the atmosphere consisted only of nitrogen and carbon dioxide without oxygen.

<span>A Prokaryotic cell does not contain a nucleus. It only contains one chromosome and is a single-celled organism. It was the only form of life on earth for millions of years. Examples of a Prokaryotic cell are the different types of bacteria present today.

</span><span>Autotrophs obtain energy by the process of photosynthesis. Any living organism need energy to survive and autotrophs are no different. Two types of autotrophs are present and they are Photoautotrophs and Chemoautotrophs. The Photoautotrophs rely on the energy produced during the process of photosynthesis and the Chemoautotrophs get their energy from most of the inorganic substances. Phtoautotrophs actually get their energy from the sunlight and then convert it into reusable form. In case of Chemoautotrophs ammonia is an important source of energy for them.</span></span>
You might be interested in
Put the events of keratinization in order.
vodka [1.7K]

Answer: A. Accumulate keratohyalin granules. B. Cells increase in size, some retain ability to divide. C. Cell membrane thickens. Cells imbedded in lipid matrix. D. Cells within this layer proliferate.

Explanation:

5 0
3 years ago
The movement of molecules against the gradient from low concentration to high concentration using ATP
Bogdan [553]

It is also possible to move substances across membranes against their concentration gradient (from areas of low concentration to areas of high concentration). ... If the energy of ATP is directly used to pump molecules against their concentration gradient, the transport is called primary active transport.

Hope this helps

8 0
3 years ago
What are the differences between the processes of meiosis and mitosis?
zhenek [66]
Meiosis<span> has two rounds of genetic separation and cellular division while </span>mitosis <span>only has one of each. In </span>meiosis<span> homologous chromosomes separate leading to daughter cells that are not genetically identical. </span>
7 0
3 years ago
Read 2 more answers
Answer number 12please
Margarita [4]

Answer:

A. Ingestion ->Digestion ->Egestion

3 0
3 years ago
Read 2 more answers
Which statement about the relationship between the ocean and atmosphere is MOST accurate? A Ocean currents do not affect the atm
stira [4]

Answer:

B

Explanation:

7 0
3 years ago
Other questions:
  • Which part of the ethmoid bone forms the superior part of the nasal septum?
    10·1 answer
  • An object's velocity can be described by its speed and acceleration<br><br> true or false?
    14·2 answers
  • In humans, the allele for brown eyes is dominant to the allele for blue eyes. If a man with blue eyes and a woman with brown eye
    11·2 answers
  • What percentage range of an adult's kilocalories is recommended as the maximum to be obtained from fat?
    6·1 answer
  • Whats another name for the water cycle?
    15·2 answers
  • Which cell is a prokaryote
    9·2 answers
  • 2 chromosomes that are not identical but are the same length and have different forms of the same genes are called a ____?
    10·1 answer
  • Studying how drought affects the food supply in a region of the Alaskan tundra would be studying a question at the __________ Le
    9·1 answer
  • Which is one way that analyzing ice benefits scientists who study ancient climates?
    12·1 answer
  • With a population in Hardy-Weinberg equilibrium, the A allele has a frequency of 0.60, and the frequency of the a allele is 0.40
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!