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
Gemiola [76]
3 years ago
7

In 1859, when Darwin published "On the Origin of Species by Natural Selection", which argument was he explaining?

Biology
1 answer:
cluponka [151]3 years ago
5 0
I believe the answer is C
You might be interested in
The responses observed in type IV hypersensitivities result from the action of IgG and complement. autoantibodies. IgE antibodie
ANTONII [103]

The responses observed in type IV hypersensitivities result from the action of T cells and phagocytes.

Hypersensitivity IV type, also called delayed-type hypersensitivity (DTH), involves T cell-antigen interactions that cause activation and secretion of cytokines. This type of hypersensitivity requires sensitized lymphocytes that respond 24–48 hours after exposure to soluble antigens. A type IV hypersensitivity reaction is a cell-mediated reaction that can occur in response to contact with certain allergens, resulting in what is called contact dermatitis, or in response to certain diagnostic procedures such as the tuberculin skin test. Certain allergens need to be avoided to treat this condition. Type IV hypersensitivity response is observed results from the action of T cells and macrophages while other types are mediated by antibodies. This reaction  occurs at least 1–3 days after the initial exposure. Type IV hypersensitivity is the mechanism of many autoimmune disorders.

Learn more about hypersensitivities on:

brainly.com/question/13052008

#SPJ4

8 0
2 years ago
Write one scientific question about the organism in the photo.
suter [353]

Answer:

why would this organism a close ancestor of humans evolve differently than us.

4 0
3 years ago
Emergency pleaseeee answer someone!!
FromTheMoon [43]

Answer:

I think the answer is

C.they can burn or damage plants.

8 0
3 years ago
Which organelle is the control center of the cell?
hoa [83]

The nucleus controls what happens within the cell

5 0
3 years ago
Read 2 more answers
How can a scientist test a hypothesis if it is not possible to do a controlled experiment.
serious [3.7K]

Answer:

In an experiment, the researcher needs to have a control group with an experimental group where both groups are identical in every way except that the controlled group does not gets the experimental treatment.

Sometimes, it is not possible to do a test or the experiment utilizing a controlled trial (due to ethical reasons or no practical method available). All things considered, a researcher may test a theory by making predictions about outcomes or patterns that ought to be found in nature if the hypothesis is right.

3 0
3 years ago
Other questions:
  • In costa rica, a heavy downpour provides water that quickly evaporates or is absorbed and released by the dense vegetation of th
    15·2 answers
  • Music question hurry please
    8·1 answer
  • Fossil age can determine organism changes related to the time scale.
    6·2 answers
  • Which plate borders the Philippine plate?
    8·2 answers
  • Openings between _____ cells create pores in the leaf epidermis that play a critical role in photosynthesis by allowing diffusio
    14·1 answer
  • Which has more potential energy or are they the same, an apple on top of a tree, or one halfway down?
    5·1 answer
  • Why is it important to be able to date fossils?
    12·2 answers
  • Biology: For the following fill in the blank questions choose from the following words. Each word may only be used once or not a
    7·1 answer
  • (a)<br>Name the gas given off in photosynthesis​
    14·2 answers
  • Can body hair area be determined how and why
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!