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
In-s [12.5K]
2 years ago
15

Which of the following describes a properly controlled experiment?

Biology
1 answer:
finlep [7]2 years ago
6 0
The answer is a. It’s the only one with a control group
You might be interested in
Two technicians were discussing hybrid organic acid technology​ (HOAT) coolants. Technician A stated that hybrid organic acid te
Ann [662]

Answer:

B. Neither technician​ A's nor​ B's assessment is accurate.

Explanation:

Technician A is wrong because HOAT use organic acid with a low silicate inorganic corrosion inhibitors and it doesn't damage water pump as it contains azole additive which is a copper corrosion inhibitor.

Technician B is wrong because all coolants operate at neutral or basic pH range (pH equal to or greater than 7).

5 0
3 years ago
Which biome is the world’s largest and contains mostly coniferous trees?
GrogVix [38]
It’s the tropical rainforest!
4 0
2 years ago
Read 2 more answers
Your team must design an area in your school where students can relax between classes. You need to choose a material for a walkw
Alex777 [14]

Answer: B.red bricks

Explanation: I got it correct

3 0
2 years ago
Read 2 more answers
Which branch of chemistry studies the compositions if substances? the environmental impact of chemicals?
Makovka662 [10]

Answer;

-Analytical chemistry - composition.

Environmental - impact of chemicals

Explanation;

-Analytical chemistry involves the qualitative and quantitative determination of the chemical components of substances. In qualitative analysis all the atoms and molecules present are identified, with particular attention to trace elements. In quantitative analysis the exact weight of each constituent is obtained as well.

Environmental chemistry is the study of the chemical and biochemical phenomena that occur in the environment.It relies heavily on analytical chemistry and includes atmospheric, aquatic, and soil chemistry.

3 0
2 years ago
The concepts of erosion and deposition were developed by
faust18 [17]
<span>James Hutton developed the concept of erosion and deposition.</span>
4 0
3 years ago
Other questions:
  • Which planet is full with methane clouds?
    6·2 answers
  • If someone says, "Earth and all of its contents were created for the betterment of human beings, so as long as something is good
    9·1 answer
  • what is the most important responsibility of individual in creating a safe environment especially on public health. ​
    6·1 answer
  • The role of fermentation in cellular respiration is to recycle what?
    5·2 answers
  • When culturing a chemoorganoheterophic bacterium, what outcome is LEAST likely to occur if ammonia and phosphate are provided at
    8·1 answer
  • Substances effect: partially blocks (H+)/pyruvate symporter, interfering with the transport of pyruvate into the mitochondria. W
    12·1 answer
  • What is the site of Photosynthesis?
    10·2 answers
  • If all species originated on the primitive Earth at the same
    8·1 answer
  • Where do the light-dependent reactions of photosynthesis occur in the chloroplast?
    12·1 answer
  • Are any factors in the equation of photosynthesis more critical for plants that live on land than for plants that live underwate
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!