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
Vladimir [108]
3 years ago
12

The Phanerozoic Eon began approximately 545 million years ago when hard-shelled animals called...

Social Studies
1 answer:
nika2105 [10]3 years ago
7 0

Answer:

Trilobites

Explanation:

The Phanerozoic Eon is characterized by the presence of organisms that possessed hard shells as an adaptation to the environmental conditions. Among these organisms, the most common hard-shelled animals were the trilobites.

Trilobites were present during most of the Paleozoic Era, which belongs to the Phanerozoic Eon. These animals were marine organisms with remarkable and unique phenotypes.

The body of a trilobite was composed of three segments: the cephalon, the thorax, and the pygidium (tail). In addition, they possessed an exoskeleton composed of chitin, which was the reason behind their hard shells. They shed their exoskeletons to be able to grow.

Trilobites are currently extinct.

You might be interested in
How do brainiest (or whatever you call it ) someone?And how would you describe a perfect day from today to April 12,1861 ( the d
Yuliya22 [10]

Answer:

To make someone brainliest there should be a crown sign next to that person's answer.

A perfect is the sun is high and brightly glowing on you face!

5 0
3 years ago
Read 2 more answers
Are pigeons government drones sent out to watch us and make sure no one finds out the earth is flat?
Anna [14]
Yesssss pigeons are 24/7 surveillance. And unpopular opinion the earth is flat like a dome and Antarctica is the outer part..hint as to why we can’t go to Antarctica and people who do go are restricted from certain areas.
6 0
1 year ago
Read 2 more answers
The type of government in which citizens represent themselves is called ___.
Mashcka [7]

Answer:

monarchy

Explanation:

Cuz it is

g

o

o

g

l

e

7 0
3 years ago
Read 2 more answers
TLE for grade 7 and 8​
IgorLugansk [536]

Answer: ?

Explanation:

/

8 0
3 years ago
Read 2 more answers
Which of these would have had the LEAST effect on late nineteenth century American industrialization?
polet [3.4K]

A).    The Abolition Movement

4 0
3 years ago
Other questions:
  • The Athabascan entertainment included:
    6·1 answer
  • Refers to the tendency to aggress when we perceive that our progress is thwarted.
    14·1 answer
  • What is the difference between sex and gender??
    14·2 answers
  • Which technology is show in the diagram
    8·1 answer
  • Lenora's parents always taught her that she ought to "put on a happy face" even when she is not. according to research on self-p
    10·1 answer
  • All aspects of communication other than the words themselves are known as
    9·2 answers
  • Help me please for brainliest
    10·2 answers
  • A Psychology Experiment It turns out that Alpha Beta Gamma has a psychology division. Currently, they are performing experiments
    12·1 answer
  • HLO CAN SOMEONE TELL HOW BABIES ARE MADE ??​
    10·2 answers
  • Read the sentence.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!