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
Phantasy [73]
3 years ago
7

During the twentieth century,what was added to the relative time scale

Biology
1 answer:
liubo4ka [24]3 years ago
5 0
<span>During the twentieth century, absolute date was added to the relative time scale.  </span>Geologic time scale uses both relative and absolute dating techniques.  <span>Soon after the discovery of radioactivity, geologists used radioactive isotope decay to develop a method for determining absolute ages of rocks</span>
You might be interested in
What are the steps in SCNT? Order these steps so you can complete your own cloning project.
sergejj [24]
SCNT stands for Somatic Cell Nuclear Transfer. It is used for creating an ovum with a donor nucleus. It can be useful in embryology and a donor nucleus.
The steps of SCNT are as following:
<span>d. Isolate donor cells from egg donor and germ cell donor
</span><span>c. Remove and discard the nucleus from the egg cell
</span><span>e. Transfer the somatic cell nucleus into the egg cell 
</span><span>a. Stimulate cell division
</span><span>f. Implant embryo into a surrogate mother
</span><span>b. Deliver baby</span>
5 0
3 years ago
Read 2 more answers
Which statement is not true of introduced species?
Liula [17]

The false answer is D.) an introduced species generally helps balance an ecosystem

3 0
3 years ago
A thin-shelled crab can more readily move to escape a predator than can a thick-shelled crab, but it is more vulnerable to preda
Illusion [34]

Answer:

Stabilizing selection

Explanation:

Stabilizing selection is the most common form of natural selection that is not easy to notice in a population as the change is less drastic.  It occurs when average or intermediate phenotypes of a trait in a population are favored, while the extreme phenotypes of that trait are not favored by the forces of natural selection. Over time, intermediate or non-extreme traits become more common in the population, while extreme traits become less common.

5 0
3 years ago
Cells in multicellular organisms have many different sizes and shapes. These differences in cells are part of cell specializatio
qaws [65]
Cell specialization allows cells to perform essential cell specific tasks. Such as nerve cells, red blood cells etc.
6 0
3 years ago
____ has the highest affinity for electrons while _____ has the lowest affinity for electrons.
77julia77 [94]

Answer:

The answers are Fluorine and Francium.

Explanation:

Fluorine has the highest affinity for electrons while Francium has the lowest affinity for electrons. This can be measured by the electronegativity of each one, where Fluorine is the most electronegative element. This can also be seen by the accommodation of elements in the periodic table.

6 0
3 years ago
Other questions:
  • What is another name for dehydration synthesis
    10·1 answer
  • The location of continents has no affect on their climate.
    15·2 answers
  • What was the source of the microscopic "animalcules" described by Leeuwenhoek?
    14·1 answer
  • If you had to measure the amount of sulfur dioxide coming out of a volcano, what instrument would you use
    13·2 answers
  • An atom of element A has 15 protons. What would the element's atomic number be?
    5·1 answer
  • What structures of an electron microscope are comparable to the following requirements for the light microscope: (a) light waves
    11·1 answer
  • How do mutations affect an organism? A. they may cause the development of a disease-causing allele B. they may cause the develop
    7·1 answer
  • a plant cell remains unchanged in shape or size when it is kept in a solution. what kind of solution is it
    6·2 answers
  • PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B
    12·1 answer
  • What conclusion can you draw from the information in the chart?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!