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
tiny-mole [99]
3 years ago
15

Under normal conditions, when cells are not in contact with other cells this will signalthem to divide. When cells are too close

ly packed together they will stop dividing.These are examples of ______________ signals.
A. external
B. chemical
C. internal
D. None of the above
Biology
2 answers:
iren2701 [21]3 years ago
8 0
It is an example of external contact. The correct option is A.
Nitella [24]3 years ago
7 0
A. external
These types of signals are observed when there is a cut on the body. The epidermal cells lose contact with one another and divide faster until they are in contact once again. After they come into contact, division slows down again.
You might be interested in
Plz help I need it ASAP
timurjin [86]

Answer:

D

Explanation:

5 0
3 years ago
Read 2 more answers
Question 7<br> How do biologists define species?
natka813 [3]

Answer:

the most basic category in the system of taxonomy

8 0
3 years ago
Read 2 more answers
Why do many environmental agencies promote conservation of water even though a large portion of Earth's surface is covered with
Nadusha1986 [10]
There may be a shortage of clean drinking water in the future
8 0
3 years ago
Sorry it looks weird
Sunny_sXe [5.5K]
Label A: Nucleoplasm
Label B: Lysosome
Label C: Nuclear Pore
Label D: Centrioles
3 0
3 years ago
Read 2 more answers
What are the disadvantages of adding calcium oxide to fish pond​
WARRIOR [948]

Answer:

it causes the rapid increase in PH which may harmful for the for fishes and other aquatic lives.

Explanation:

There are a lot of materials which are used to neutralize the acidity of soil.some examples of such materials are slacked lime, quick lime, and liquid lime etc. Lime increases the PH and the concentration of calcium which helps in removal of phosphate from water. Raising PH also cause to remove the carbon dioxide from the water. But keep in mind that rapid increase in PH is harmful for the fishes.calcium oxide also causes the rapid increase in Ph therefore, it is not advisable to use in fishpond.

3 0
3 years ago
Other questions:
  • List the nine forms of energy that you learned about in this sec­ tion. explain why these are not the only possible categories o
    15·1 answer
  • Which of the following would NOT be a property of minerals usedfor identification?
    6·1 answer
  • Unionid mussels are native to the Hudson River in New York State. In the early 1990s, zebra mussels were introduced into the Hud
    11·2 answers
  • What abiotic components would most likely change in a shallow ocean ecosystem during upwelling?
    11·1 answer
  • Which tool did maurice watkins use when studyng DNA
    6·1 answer
  • Which of these planets would be most able to support a colony of humans?
    8·1 answer
  • Will we pass if we got 14.5out of 40.​
    7·2 answers
  • Which is an example of codominance
    13·1 answer
  • If the allele for an attached earlobe (e) is recessive to the allele for an unattached earlobe (E), what will be the relative fr
    13·1 answer
  • What THREE things did Robert Boyle confirm about air?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!