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
SashulF [63]
3 years ago
8

The observer-expectancy effect describes how

Biology
2 answers:
MrRa [10]3 years ago
3 0
D is correct answer.

Hope it helped you.


A<span> researcher's bias might cause her to influence the participants of an experiment unconsciously.
</span>

-Charlie
dimaraw [331]3 years ago
3 0
I Would Say (C)..........................

You might be interested in
Substances intended for tubular reabsorption travel from the filtrate of the proximal convoluted tubule next to the ________.
kirill [66]
Tubular reabsorption is the process that moves back into the bloodstream the solutes and water out of filtrate. It is so called because this is the second time they have been absorbed in which the first time was when they were absorbed and transported from the digestive tract into the bloodstream. The substances travels from the filtrate of the proximal convoluted tubule and next to the LOOP OF HENLE.
8 0
3 years ago
How does the tilt of Earth's rotation axis affect Earth's weather?
nikklg [1K]
I'm no Eisten, but from what I remember when I was in middle school. The Earth's rotation axis affect Earth's weather for seasons. The seasons change (weather) depending on the amount of sunlight as earth revolves around the sun. 
7 0
3 years ago
Ron is running an experiment to see if certain sounds can improve memory. While testing the subjects’ memory, Ron unintentionall
Zigmanuir [339]
The answer is A!
Ron is showing an invalid experimental placebo in this experiment due to the positive response.

goodluck, :)
5 0
3 years ago
During what stage does land get ready for the arrival of a new species
34kurt

Answer

           The correct option is B.

Explanation

          Ecological succession of any species is composed of following stages:

A. Migration

            The movement of species from one place to another location for the purpose of setting permanently o temporary is known as migration . Forexample

             Siberian crane (<em>Leucogeranus leucogeranus</em>) that live in the arctic tundra of eastern and western Russia. The eastern population of birds migrate to china while western population of these birds migrate to Iran, India and Nepal during winter season.

B. Ecesis

         The complete establishment of species in new habitat that was completely barren or left barren due to some catastrophe is known as Ecesion. This process is dependent upon the climatic, edaphic and biotic factors. The success of plant depend upon some of the adaptations to withstand the unfavorable conditions which includes both biotic and abiotic conditions.

Forexample

               The process of succession in xerosphere start on barren area from pioneer stage covered by crustose lichen, then foliose lichen followed by moss stage, herbaceous stage and a last by shrub stage.

C. Nudation

       The initiation of new species by major environmental disturbance such as volcano eruption is known as Nudation.

D. Reaction

            It represents the effect of established species on the habitat. Forexample plants alter habitat condition as they grow. They extract raw materials from the environment in large amounts and return metabolic wastes. The waste accumulates in large amounts and differ from the original raw materials, thus altering the environment.  

E. Competition

             The phenomenon which involves struggle for existence between two or more individuals growing in same area, that make excessive demand that are similar in nature on the soil is known as competition.

Such struggle may be in between same species or different species. The competition may be interspecific or intraspecific. Because of completion the weak individuals are eliminated as strong ones are retained.

 


8 0
3 years ago
MRSA has emerged as a serious infectious disease, with the first case of methicillin-resistant S. aureus being detected in 1961.
andreev551 [17]

Answer:

All of the options are true for a MRSA infection.

Explanation:

<em>Staphylococcus aureus</em> is one of the most frequent pathogens causing hospital and community infections. <em>S. aureus</em> can become very easy methicillin resistant (called MRSA isolates) and others beta-lactam antibiotics (are the ones widely used to treat infections) and usually can be resistant to other class of antibiotics, become a  very strong bacteria making treatment options very limited. MRSA isolates can rapidly transfer the methicillin resistance to other species of S<em>taphylococcus</em> and some other bacteria. Also <em>S. aureus</em> can acquire other antibiotic resistant genes making a deadly bacterium for its strong resistance. It is in search how the bacterium acquire this antibiotics resistance ( and other virulence factors genes) and the mechanism involve to develop new drugs to treat  MRSA infections  with the hope that can´t develop resistance to this new drugs.

3 0
3 years ago
Other questions:
  • The TaqI restriction enzyme cuts between adenine and thymine in the restriction sites TCGA and AGCT. How many segments will ther
    7·1 answer
  • I need these matched please help
    7·1 answer
  • Which of the following is not an accurate description of chemical reactions?
    13·2 answers
  • What would most likely happen if capillaries had thick walls and large diameters?
    11·2 answers
  • * The uterus lining<br>the fertilised ovum.​
    6·1 answer
  • How does biodiversity vary with altitude and latitude​
    10·1 answer
  • Recall what you know about cell biology to complete the statements. DNA is located in the of the cell. DNA contains segments cal
    14·1 answer
  • PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B
    9·2 answers
  • What types of air masses affect the weather in north America?
    15·2 answers
  • The cell membrane is a unique structure that has many functions.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!