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
sladkih [1.3K]
3 years ago
9

How do geologic timelines help scientists?

Biology
1 answer:
Otrada [13]3 years ago
7 0

Answer:

They used relative dating to divide Earth's past in several chunks of time when similar organisms were on Earth. Later, scientists used absolute dating to determine the actual number of years ago that events happened. The geologic time scale is divided into eons, eras, periods, and epochs.

Explanation:

You might be interested in
What fear did Robert Darwin have for his son?
ArbitrLikvidat [17]

Answer:

That his son would be a disgrace to himself and to the family

Explanation:

3 0
2 years ago
What are these species a type of?
GaryK [48]

Answer:

They could all become some sort of food for people.

Explanation: Hope this helps! :)

5 0
2 years ago
Meiosis consists of cell divisions with only one duplication of . this division results in daughter cells, each with set of chro
ale4655 [162]

SOS:

The answer is

  • <u><em>Two</em></u>
  • <u><em>Chromosomes</em></u>
  • <u><em>Four</em></u>
  • <u><em>One </em></u>
  • <u><em>Haploid</em></u>

<em>Hope this helps!</em>

6 0
2 years ago
3. List three differences between a HURRICANE and a TORNADO.
Korolek [52]

Answer

The difference is that a tropical storm has wind speed up to 73mph, once it exceeds this then it become a hurricaneTornadoes are usually very short and can last up to an hour, but a hurricane can last up to three weeks. A hurricane almost always forms over sea while a strong tornado usually forms over land

Explanation:

mark me brainlest

7 0
2 years ago
Read 2 more answers
What are the three classes of bryophytes?
Margaret [11]

Answer:

Class I: Hepaticopsida ( Liverworts)

Class II: Anthocerotopsida ( Hornworts)

Class III: Bryopsida ( Mosses)

Explanation:

Bryophytes are small plants that grows in moist and shady places.They don't attain great heights because of absence of roots, vascular tissues, mechanical tissues and cuticle. They are terrestrial but require external water to complete their life cycle. Hence they are called as the" amphibians" of the animal kingdom.

Class I: Hepaticopsida or Hepaticae

  • Gametophytic plant body is either thalloid or foliose. If foliose the lateral appendages are  without midrib.
  • Rhizoids without septa
  • Each cell in the thallus contain many chloroplasts
  • Sex organs are embedded in the dorsal surface
  • Capsule lacks columella
  • Sporophyte may be simple having only one capsule or differentiated into root, seta and capsule
  • It has 4 orders: Calobryales, Jungermanniales, Spherocarpales and Marchantiales

Class 2: Anthocerotae or Anthocerotopsids:

  • Gametophytic plant body is simple, thalloid;thallus dorsiventra without air chambers shows no internal differentiation of tissues
  • Scales are absent in the thallus
  • Each cell of the thallus possess a single large chloroplast with a pyrenoid
  • Sporophyte is cylindrical only partly dependent on gametophyte for its nourishment. It is differentiated into bulbous foot and cyclindrical capsule. Seta is meristematic.
  • Endotheciumforms the sterile central column in the capsule. It have ony one order Anthocerotales

Class 3: Musci or Bryopsida

  • Gametophyte is differentiated into prostrate protonema and an erect gametophores
  • Gametophore ids foliose, differentiated into axis and lateral appendages like leaves but without midrib.
  • Rhizoids are multicellular with oblique septa
  • Elaters are absent in the capsule of sporangium
  • The sex organs are produced in seperate branches immersed in a group of leaves.
  • It has only three orders: Bryales, Andriales and Sphagnales

Bryophytes are used as a packaging material for fragile goods, glasswares etc.Mosses are good source of animal food in rocky and snow clad areas. Decoction prepared by boiling Sphagnum in water  is used for the treatment of eye disease.

3 0
3 years ago
Other questions:
  • Approximately how old is the earth?
    13·2 answers
  • In some ecosystems, mountain lions eat deer, coyotes, and rabbits. Which of the following terms best describes these mountain li
    8·1 answer
  • What are the main differences between DNA, Alleles, and Genes?
    8·1 answer
  • What is the job of proteins in the plasma membrane?
    11·1 answer
  • What are the products of transcription​
    9·1 answer
  • In what age did the T Rex exist
    15·2 answers
  • What is cell division?
    10·2 answers
  • What is the most likely reason why Tuj1 was used to assess the phenotype of cells that have incorporated the five candidate gene
    6·1 answer
  • Staphylococcus aureus is a type of bacterium that can cause infections in humans. These bacteria can exist for long periods of t
    9·1 answer
  • The atmosphere of Earth today primarily contains the following gases: carbon dioxide (CO2), water vapor (H2O), nitrogen (N2), an
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!