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
boyakko [2]
2 years ago
13

Describe the earth’s geography and atmosphere during this time period. What major events happened to help shape the earth during

that time period? What kinds of organisms lived on the earth during that time period? What were some key events that happened during that time period? How did that time period end? write it in a story
Biology
2 answers:
Luba_88 [7]2 years ago
7 0

The geological history of Earth follows the major events in Earth's past based on the geological time scale, a system of chronological measurement based on the study of the planet's rock layers (stratigraphy). Earth formed about 4.54 billion years ago by accretion from the solar nebula, a disk-shaped mass of dust and gas left over from the formation of the Sun, which also created the rest of the Solar System.

Earth was initially molten due to extreme volcanism and frequent collisions with other bodies. Eventually, the outer layer of the planet cooled to form a solid crust when water began accumulating in the atmosphere. The Moon formed soon afterwards, possibly as a result of the impact of a planetoid with the Earth. Outgassing and volcanic activity produced the primordial atmosphere. Condensing water vapor, augmented by ice delivered from comets, produced the oceans.

As the surface continually reshaped itself over hundreds of millions of years, continents formed and broke apart. They migrated across the surface, occasionally combining to form a supercontinent. Roughly 750 million years ago, the earliest-known supercontinent Rodinia, began to break apart. The continents later recombined to form Pannotia, 600 to 540 million years ago, then finally Pangaea, which broke apart 200 million years ago.

The present pattern of ice ages began about 40 million years ago, then intensified at the end of the Pliocene. The polar regions have since undergone repeated cycles of glaciation and thaw, repeating every 40,000–100,000 years. The last glacial period of the current ice age ended about 10,000 years ago

Licemer1 [7]2 years ago
3 0

Hi There!

Earth is known to be 4.6 billion years old (classified by scientists). A lot of the atmosphere that have today was created during the first million years of Earth's presence. Many elements like vapor from water, nitrogen, and carbon dioxide is what the atmosphere was maily made of. Many organism that lived in that era were really big... Many were dinosaurs... Lots of organism we have now a days were aroung back then but they were way larger. Like when you Rolly Pollies outside your house, those were 1,000 times bigger when dinosaurs around. Another example are alligators. That period ended when scientists said that a meteor hit Earth and killed almost everything. Some of most key events that occured during that era were the many fossils found by scientists that are founf today in museums.

Hope This Helps :)

You might be interested in
For anyone who understand biology help me out lol
Anit [1.1K]
What do you need help with?
7 0
3 years ago
What are the componets of a good hypothysis
Alisiya [41]

Answer:

—The assumption

— The condition

— The prediction

Explanation:

A good hypothesis will have THREE important components. The three parts are: the assumption, the condition, and the prediction.

5 0
2 years ago
I need help with this :(
kirill115 [55]
Aim/objective: To determine the effect of carbon dioxide concentration on the rate of photosynthesis.Problem statement :What is the effect of carbon dioxide concentration on the rate of photosynthesis? Hypothesis When the concentration of carbon dioxide increases, the rate of <span>photosynthesis also increases until the rate becomes constant.</span>VariablesManipulated : Concentration of carbon dioxideResponding : The rate of photosynthesis// The number ofbubble releasedper minute<span>Constant : Light intensity, temperature/ Size of plant</span> Apparatus and materials:Materials :Elodea/Hydrilla ,different concentration of sodium bicarbonate,distilled water  Apparatus : Beaker, boiling tube, clip, table lamp, filter funnel Technique :Count and record the number of bubbles produced / released in 20 minutesusing a stopwatch.Procedure:1<span>.Diagram of experimental setup with at least 5 functional labels.</span><span>2.Fill a boiling tube with</span>150 ml of 1%sodium hydrogen carbonate solution. <span>3.Fix a paper clip / plasticine to a sprig of aquatic /</span>Hydrillasp. plant.4.Submerge / put the aquatic plant into the boiling tube containing1% sodium hydrogen carbonate solution.5.Put the boiling tube into a water bath at room temperature (20-30oC). 6.Place the boiling tube at distance of 50 cm from a lighted bulb. 7.Put aside the boiling tube for 5 minute (for the aquatic plant to adjust).8.Start the stopwatch.9.Count the number of bubbles release in 20 minutes.10.Record the result is a table.11.Repeat steps 2 until10 using 2%, 3%and 4%of sodiumhydrogencarbonate solutions. 12.Calculate the rate of photosynthesis.(Rate of photosynthesis = Number of bubbles/time)13.Precaution : Count the bubbles only after the rate becomesconstant. DataInclude the following titles with units:-Concentration of sodium hydrogen carbonates solution (%)-Number of bubbles released in 20 minutes -Rate of photosynthesis (number / minute) Conclusion:When the concentration of carbon dioxide increases, the rate of <span>photosynthesis also increases until the rate becomes constant. Hypothesis</span><span>is accepted.</span>
4 0
3 years ago
Vertebrates have a notochord during early embryonic development.
Inessa [10]
No. Look up what a notochord is, vertebrates cannot have a notochord during embryonic development, as all nutrients flow into the blood stream, or stomach. Notochords are in between the mouth, and stomach. Which would NOT be used during development
4 0
3 years ago
Antibiotic resistance in bacteria is an example of _________
Ivan

Antibiotic resistance in bacteria is an example of natural selection.

Explanation:

Antibiotic resistance in bacteria occurs when bacteria do not respond to the antibodies, chemical and drugs required to treat the bacterial infection.

The resistant mutant bacteria will survive the antibiotic action and would pass on this trait to its offspring. This passing of survival trait is the example of natural selection in the process of evolution.

4 0
3 years ago
Other questions:
  • 1. What factor(s) can influence obesity? (1 point) a-genetics b-hormones c-enviornment d-all of the above
    13·1 answer
  • Which structure is not present in all organisms?
    12·1 answer
  • In tomato plants, the production of red fruit color is under the control of an allele RR. Yellow tomatoes are rrrr. The dominant
    10·1 answer
  • While preparing a cell culture aside colony of bacteria into distilled water and stir that up this mixture of water and living c
    15·1 answer
  • Explain why the offspring of a cactus finch and a medium ground finch would look like an intermediate between the two birds, but
    12·1 answer
  • Why does a cell need to grow during interphase before it divides during mitosis? What would happen if cells did not grow before
    7·1 answer
  • What organelle is huge in plant cell but small in Animal cell
    13·1 answer
  • A response is a _______________ to a stimulus. • A stimulus is anything that can cause an individual to respond or react. • Stim
    8·1 answer
  • What two types of reefs are found in the Marianas?
    9·1 answer
  • Considering that the mature sporophytes of true mosses get their nutrition from the gametophytes on which they grow, and conside
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!