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
Gelneren [198K]
3 years ago
10

When did the mass extinction occur? (Name the era and period)

Biology
1 answer:
kherson [118]3 years ago
6 0

Answer:

Explanation:

The first mass extinction is called the Ordovician-Silurian Extinction. It occurred about 440 million years ago, at the end of the period that paleontologists and geologists call the Ordovician, and followed by the start of the Silurian period. In this extinction event, many small organisms of the sea became extinct.

You might be interested in
Describe what happens when identical objects are dropped on planets with different gravitational conditions.
Elenna [48]
Some balls will drop slower than others.
5 0
3 years ago
Analyze the role of dna fingerprinting in criminal investigation.
nikitadnepr [17]

DNA/fingerprints are all unique, therefor it is easy to match a fingerprint to a person thus they use this mechanism in criminal investigations because only one person woul have matching DNA to the prints on the scene, and that is the criminal.

Hope this helps :)

8 0
3 years ago
What does paleontology, biogeography, embryology, and anatomy reveal bout evolution
Ugo [173]

Paleontology deals with fossils and helps in learning the changes of living organisms in sequence.

Biogeography deals with the distribution of species across the mother earth.

Embryology deals with the study of the similarities and difference that exists in the embryos of different species or organisms.

Anatomy deals with the study of the similarities and difference that exists among different species or organisms.

<u>Explanation: </u>

As an organism dies, the remaining of these organisms will be buried in soil. These are fossils. Paleontology supports evolution with the information that are related to the fossils, footprints etc. With these we can study the evolution of organisms and also the changes they undergo. There are some technologies like radiometric dating that can be used for the determination of these rocks and fossils ages.

Charles Darwin suggested that the evolution of species were form their ancestor. Biogeography supports evolution by explaining about the distribution of different species over the earth. Embryology and Anatomy supports evolution by describing about the similarity and difference in the species of living organisms. Embryology deals with the embryos and anatomy deals with the structure.

8 0
2 years ago
NO FAKE ANSWERS AND LINKS PLS AND THANK YOU. Describe the term velocity
scoundrel [369]

Velocity is defined as time rate of displacement in a specified direction.

Explanation:

Velocity is defined as a vector measurement of the rate and direction of motion. Put simply, velocity is the speed at which something moves in one direction.

4 0
1 year ago
Read 2 more answers
What is not a step in most scientific investigations
Mariulka [41]

Question options:

1. developing a hypothesis to explain collected data

2. proving a theory and writing a new scientific law  

3. collecting data through observation and measurement

4. observing and experimenting to test a hypothesis

Answer:

2. proving a theory and writing a new scientific law  

Explanation:

Providing a theory and write a new scientific law is not a step of scientific investigation. To prove a law a theory, its take many years of research.

There are steps of scientific investigations below,

1. Make an Observation.

2. Form a Question.

3. Form a Hypothesis.

4. Conduct an Experiment.

5. Analyze the Data and

6. Draw a Conclusion.

These step of scientific investigation does not include to write a theory and scientific law.

4 0
3 years ago
Other questions:
  • What is the most important nutrient for energy?​
    12·1 answer
  • What is an effect of short-term exposure to stress
    7·2 answers
  • Is the following sentence true or false ? The temperature of the outer thermosphere is quite high...
    6·1 answer
  • Explain how you might go about determining the genotype of a purple flowering plant
    15·1 answer
  • A patient can't feel his fingers after a hard fall on his arm during a wrestling match. The doctor suspects nerve damage. What p
    12·1 answer
  • What vascular plant tissue is made of dead cells
    9·1 answer
  • Viewed Through A Microscope, A Sample Of Natural Water Is Seen To Contain A Cluster Of Sphere-shaped Bacteria, But No Rod-shaped
    11·2 answers
  • 7. Which kingdom includes the most eukaryotic unicellular organisms?
    5·1 answer
  • 2. Why do the scientists continue to collect data about the ecology of the Hudson River 20 years after the invasion of the zebra
    9·1 answer
  • Complete the following sentence.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!