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
devlian [24]
2 years ago
12

Indiana is home to fossilized crinoids. These small, sea-dwelling invertebrates are vaguely reminiscent of starfish, and some sp

ecies of crinoid are still present on Earth today, but these animals were especially common in the world's oceans about 400 million years ago. How is this information important to the theory of evolution?
Biology
2 answers:
s2008m [1.1K]2 years ago
7 0

The presence of crinoid fossils in Indiana provides evidence that populations have changed over time.

Archy [21]2 years ago
6 0

Crinoids are echinoderms which are closely related to starfish, Sea Urchins and brittle stars. Some of the Crinoids which are found till today have evolved some 420 million years ago. By studying Crinoids, a relation can be established in terms of evolutionary changes that have occurred or have been adopted by the species itself during a certain course of time. Also a relations could also be established to work out the changing climatic conditions since 420 million years ago.

You might be interested in
A loopful of bacteria containing 1000 bacterial cells is inoculated into a nutrient broth and incubated. After a negligible lag
Black_prince [1.1K]

Answer:

<h2>a.  1000 X 2^8</h2>

Explanation:

As given;

Initial population of bacteria= 1000;

Log phase growth is exponential phase, period in which bacteria gets double.

Generation time= 15 minutes;

it means, bacteria get double in every 15 minute,

so after 2 hours, bacteria will have 8 generation times;

so the final generation of bacteria is =1000 X 2^8.

Final bacterial generation after two hours = 256,000(1000 X 2^8)

5 0
3 years ago
Which tissue would likely have cells with the greatest number of gap junctions? Which tissue would likely have cells with the gr
Umnica [9.8K]

Answer: cardiac muscle

5 0
3 years ago
Some meteroites have the same composition as the earths core
Nataly_w [17]
This is very so true
5 0
3 years ago
Sexual reproduction helps a species to be successful because
sveta [45]

Answer:

The fact that most eukaryotes reproduce sexually is evidence of its evolutionary success. In many animals, it is actually the only mode of reproduction. The genetic diversity of sexually-produced offspring is thought to give species a better chance of surviving in an unpredictable or changing environment.

8 0
3 years ago
What is the name of the principle that is based on greek and latin roots meaning "head-to-tail"?
telo118 [61]
The principle is called CEPHALOCAUDAL PRINCIPLE.
This principle proposed that growth follow a particular pattern in which the head and the upper part of the body grow first before the growth proceeds to other part of the body. 
6 0
3 years ago
Other questions:
  • Carbon tends to form four bonds. what kind of bonds are they?
    12·1 answer
  • For this assessment, you will write a short story.
    9·1 answer
  • I need help this homework science
    13·1 answer
  • What type of organism moves using cilia
    6·2 answers
  • You are walking to school when you encounter a strange barking dog. you tense up and contemplate whether you should run away. wh
    10·2 answers
  • Joints that have bone ends held together by a joint capsule are structurally classified as ------- joints
    7·1 answer
  • How does facilitated diffusion differ from simple diffusion
    6·1 answer
  • What are the six kingdoms of life
    6·2 answers
  • Which part of the cell membrane can catalyze chemical reactions
    14·2 answers
  • Without the __, a plant wouldn't have any pollen.<br><br> fruit <br><br> stamen <br><br> nectar
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!