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
Ghella [55]
2 years ago
7

A researcher studying handwashing uses guidelines set by the American Society of Microbiology to determine if handwashing has ta

ken place: use warm or hot running water and soap while washing for 10 to 15 seconds all surfaces, including wrists, palms, backs of hands, and under fingernails. This guideline is considered a. the Hawthorne effect. b. an operational definition. c. a correlation. d. a test.
Biology
1 answer:
Mariana [72]2 years ago
5 0

Answer:

The correct answer is b. an operational definition.  

Explanation:

An operational definition constitutes the set of procedures that describe the activities that an observer must carry out to receive sensory impressions, which indicate the existence of a theoretical concept to a greater or lesser degree. In this sense, it tries to clearly indicate how the variables are going to be manipulated or measured and also indicates that to measure a variable, it is necessary to carry out a series of activities or procedures. It is the one that builds or adapts from others, based on the observable characteristics of the phenomenon; indicating the concrete, empirical elements or indicators of the fact to be investigated.

You might be interested in
PLEASE HELP!!
natta225 [31]

Answer:

I would say that the answer is A, or releasing ladybugs into a habitat.

Explanation:

This is the only "natural" way to control an aphid population. However, please note that as well as ladybugs, praying mantis's also eat aphids. But, the answer choice doesn't describe the option very well, so that is why I say that it is A.

<em>Hope it helps!</em>

8 0
3 years ago
Read 2 more answers
Which female is most probably the<br> mother?
Advocard [28]

Answer:

What does this mean?

Explanation:

4 0
3 years ago
The fruits have several purposes. Which purposes might be similar to those of a cone?
prisoha [69]

Answer:

Flowers and cones have different structures. Cones when mature have a woody texture and is made up of scales while flowers have colorful petals, sepals and both male and female reproductive portions are called stamens and pistils.

Explanation:

4 0
2 years ago
⚠️⚠️⚠️THE ANSWER IS WOOD!! Trust me, I asked my biology teacher which ones I got wrong on the unit test and she sent me screensh
exis [7]

Answer:

Yes, the answer is wood.

Explanation:

Wood is a natural material and is subject to variations in composition and moisture content. Therefore the energy from burning it or gasifying it would likewise be variable.

not sure what the purpose of this question was, but here's the explanation anyway! have a nice day.

6 0
2 years ago
If no ATP is present in the muscle cell what would be the likely result?
Elden [556K]

Answer: c. The myosin would not be able to let go of the actin

Explanation:

Muscles consists of two proteins called actin and myosin and responsible for muscle contraction.

Myosin is ATP dependant and when ATP binds to it, it is able to release the actin.

This will allow the actin and myosin to seperate from each other thus leading to muscle contraction

5 0
3 years ago
Other questions:
  • After sunset what can be expected with the cooling rate of soil compared
    8·1 answer
  • A group of penguins is standing on an iceberg. half the iceberg falls into the ocean and half of the penguins are killed leaving
    11·1 answer
  • Diseases carried from person to person through other hosts, such as animals or insects, are known as _____
    6·1 answer
  • Humans cannot convert the sun's energy into glucose for themselves because humans lack _____. leaveschlorophyllvacuolesflowers
    10·2 answers
  • Which example illustrates public scientific communication?
    6·2 answers
  • According to the endosymbiotic theory, mitochondria are believed to have initially been free-living bacteria which were engulfed
    8·1 answer
  • Answer these 4 task cards Plz
    8·1 answer
  • What is one possible positive outcome of global warming?
    8·1 answer
  • PLEASE HELPPPPP Im almost out of time
    7·2 answers
  • What effect does the sun have on the skin to cause cancer
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!