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
timama [110]
3 years ago
7

An index fossil is:________.a. a fossil found in a particular site. b. the ideal specimen of that species to which all later des

criptions must refer. c. the type specimen of a species. d. a fossil used to categorize a stratigraphic layer.
Biology
2 answers:
JulsSmile [24]3 years ago
6 0

Answer:

Option (D)

Explanation:

An index fossil is usually defined as those fossil that appeared for a short geological time and were widely distributed over the surface of the earth. These fossils are extremely rare, and it plays an important role in determining the age of a rock, and it also helps in the correlation of rocks. A noticeable number of index fossil species were observed in different places on earth which were deposited on the rock sequences in the geological time.

It enables a geologist to categorize the different stratigraphic layers.

Thus, the correct answer is option (D).

Rom4ik [11]3 years ago
5 0

Answer:

Option d, a fossil used to categorize a stratigraphic layer

Explanation:

Fossils that are typical of a specific time range in the course of history of evolution of earth are generally termed as index fossil.  These fossils can be used to determine the age of the rock layers and fossils with in which they are found. An index fossil must have a unique identity so that it can be easily recognized.Along with this they must have a lived for a short span of time in horizontal rock layer which must be geographically widespread for matching up to huge distances.  

Hence, option D is correct

You might be interested in
What did the scientist study with his microscope?
Novay_Z [31]
I found the answer to be cells
6 0
3 years ago
New Zealand has a population of 4,326,380 and has an area of 103,736 while Australia has an area of 2,967,909 miles and a popula
inna [77]

Since the country has a smaller area and a large amount of people (although smaller than Australia) the ratio of land to people in New Zealand is much larger than the ration of land to people in Australia.

8 0
3 years ago
Which cellular structure(s) is/are present in prokaryotic cells,
vovikov84 [41]

Capsule is a structure present in prokaryotes but absent in eukaryotes.

<h3>What are prokaryotes? </h3>

Prokaryotes cells are cells that do not have structures bounded in a membrane. example include bacteria.

<h3>What are Eukaryotes?</h3>

Eukaryotes cells are organisms that have their nucleus and other organelles bounded in an enclosed membrane.

Prokayote e.g Some bacteria have capsules it is carbohydrates in nature and it enables the bacteria to attach themselves to the surface. This is not present in eukaryote cells.

Conclusively, Capsule is the structure present in prokaryotes but absent in eukaryotes.  

kindly find attached for more details on prokaryotes brainly.com/question/24805554

4 0
2 years ago
Timothy has attached earlobes like his maternal grandfather. His mother and father both have free earlobes, which are dominant.
gavmur [86]

its H because his maternal grandfather is on his moms side of the family and has the recessive allele not his grandfather on his dad's side

5 0
3 years ago
Which of the following statements about idea models is not true?
Doss [256]

The correct option is B.

Idea models refers to those models that are used to show the relationships that exist between abstract concepts. The model is used basically to bring about desired changes and it normally used in business and other sectors to visualize how an idea might work out. Idea models are usually presented in form of graphs and equations, the variables in these graphs and equations show the relationships between the variables that are been considered.

4 0
3 years ago
Read 2 more answers
Other questions:
  • What was miss Evers initial reason for participating in the study ? "Miss Evers' Boys"
    12·2 answers
  • How is ammonia produced by bacteria in the soil
    13·1 answer
  • Which term refers to the stages an organism goes through, from birth to death?
    10·2 answers
  • Does anyone know the correct order? (IMAGE PROVIDED)
    14·1 answer
  • Engineers are trying to improve a race car. Their goal is to increase the acceleration of the car using the same engine. Which c
    14·2 answers
  • TRUE OR FALSE<br> Oxygen is absorbed into the bloodstream in the trachea?
    15·2 answers
  • Which best describes how sediment forms? A. Loose material is compacted by pressure. B. Chemical changes cause sediment to cemen
    9·2 answers
  • Some plants and fungi have both sexual and asexual methods of reproduction. The plant or fungi offspring born from sexual reprod
    6·2 answers
  • A passenger in a car is holding an open water bottle when the car stops suddenly. Why does the water in the bottle splash out wh
    15·2 answers
  • Does someone know this answer to this question if you do pls tell me
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!