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
MrRa [10]
3 years ago
9

During which era in earth's history were the first insects?

Geography
1 answer:
Pavel [41]3 years ago
6 0

Answer:

Paleozoic

Explanation:

The first insect fossils are dated to the Devonian, but because of the development of the genetics, the scientists have been able to trace the appearance of the first insects in the Ordovician. The insects originated from the crustaceans. Initially they were walking on land, but they hadn't developed wings. The wings came to develop in some insects in the Devonian, and since than it has gradually became one of their trademark features. It is interesting that the first insects actually appeared at the same time with the first terrestrial plants, and also that they are the first organisms to develop wings and be able to fly.

You might be interested in
Why do many scientists believe that increased pollution may cause global warming?
Ber [7]

Scientists believe that increased pollution may cause global warming because  pollution includes greenhouse gases, which trap heat in the Earth’s atmosphere.

Option B

<u>Explanation</u>:

When the average temperature of earth increases and rises continuously above the normal value for a long period of time the it is referred as global warming.

Human beings are major cause in increasing pollution by various means whether its chemical industrial metallic or any other type of pollution. The major contributing factor in aiding pollution is the smoke from factories or vehicles which increases the carbon dioxide level above normal and when these gases rises they are trapped inside the earth surface and produce a green house effect. This is the main reason that scientists think aboutglobal warming.

3 0
3 years ago
Read 2 more answers
What is the lithosphere?
aleksklad [387]
The answer is

The mantle
7 0
3 years ago
Read 2 more answers
In the last paragraph, what does disrupt mean?
Elza [17]
Disrupt means, to interrupt by causing a disturbance or problem.
7 0
3 years ago
What religion celebrates yom kippur and hanukkah?
Phantasy [73]
Judaism
I hope this helps 

3 0
3 years ago
Which region’s climate can be described as having cold and harsh winters with hot and humid summers? a Midwest b Northeast c Sou
Viktor [21]

Answer:

midwest b

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Choose the correct descriptions of the location of the state of Georgia.
    9·2 answers
  • Which of the following is the root source of conflict between Israel and Palestine?
    7·2 answers
  • Describe Copernicus's contribution to the current structure of the solar system.
    13·1 answer
  • Give an example of complex institution
    7·1 answer
  • What is the factors of the rainfall in india
    13·1 answer
  • Sorts of things in topics into the correct category a boy argues with his father crime does not pay the seller gets caught in a
    5·1 answer
  • Which of the following is not a major mountain range in central asia?
    8·2 answers
  • Western Europe is more developed than Eastern Europe because ____.
    12·1 answer
  • How do the issues facing Sub Saharan Africa affect its economic development? I need a paragraph.​
    14·1 answer
  • How can Ireland be divided into regions? (language, dialect, political divisions, religions
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!