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
BlackZzzverrR [31]
3 years ago
8

How do scientists determine when an era ends and an era begins

Biology
1 answer:
rodikova [14]3 years ago
4 0
 Geologic Time Scale.Scientists decide when an era begins<span> and </span>ends<span>, due </span>to<span> mass extinction. ...</span>Scientists determine<span> when drastic changes </span>are<span> made by the fossil record, which shows earths past organisms that have become extinct.</span>
You might be interested in
The function of mitochondria and chloroplasts is related to energy in what way does Their function differ
weqwewe [10]

The function of mitochondria and chloroplasts is related to energy. In what way does their function differ? Mitochondria produce energy in prokaryotic cells, while chloroplasts produce energy in eukaryotic cells. ... While the chloroplast get there food from the suns energy through the process of photosynthesis.

3 0
4 years ago
Read 2 more answers
Amino acid<br> sequence for the mRNA: AUG/GGA/AAA/UGA
abruzzese [7]
Methionine/Glycine/Lysine/STOP
4 0
3 years ago
A non-critical surface that does not penetrate tissue, but requires the use of barriers to prevent cross-contamination, includes
s2008m [1.1K]

Answer:Film placement instruments.

Explanation:

3 0
3 years ago
As water moves through an ecosystem, plants and animals lose it back to the atmosphere through
leva [86]

Evaporation and transpiration since the suns energy causes this phenomenon

3 0
3 years ago
Do you know how much carbon dioxide is stored in the atmosphere as CO2?.....I always thought that carbon dioxide and CO2 were th
kirza4 [7]

They are the same thing, but there's also carbon dioxide in the ocean, dissolved as carbonic acid. Carbon dioxide literally means one carbon, two oxygens. CO2.

7 0
3 years ago
Read 2 more answers
Other questions:
  • The most reliable way to make good observations is to _____.
    6·1 answer
  • how is evidence that stars and groups of stars are moving away from each other to relate to the Big Bang Theory
    13·1 answer
  • In the scientific world, cold hard facts are often termed___
    8·1 answer
  • While studying evolution, a student comes across a cladogram that includes clades like amphibia, reptilia, aves, and mammalia. W
    8·2 answers
  • If Donald trump had no hair he would look how would he look like?
    13·2 answers
  • Match the following methods of movement with the appropriate protozoan. 1. cilia amoeba 2. flagellum euglena 3. pseudopodia para
    13·2 answers
  • Which process is used by heterotrophs to obtain preformed organic molecules from the environment?
    10·1 answer
  • What is a sodium potassium pump
    9·2 answers
  • Which is a basic unit of a sugar molecule
    7·2 answers
  • When conducting tests for the presence of a specific organic substance, it is very useful to include a ________ control, which w
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!