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
oksian1 [2.3K]
3 years ago
13

An experiment measures the growth of crystals in a liquid solution aboard the space shuttle. A collection of bottles has the liq

uid in varying strength, or concentration of the tested substance. What would be a control observation in this experiment?
A. the bottle with 0% concentration


B. the bottle with the weakest concentration


C. the bottle with the strongest concentration


D. the bottle with the medium amount of concentration
Biology
1 answer:
Feliz [49]3 years ago
7 0

The correct answer is option A, that is, the bottle with zero percent concentration.  

The control in the given case would have the liquid in it in the absence of any supplemented dissolved solute. So, as to find whether the solution is making the crystal formation or the liquid can do it by itself.  

The control refers to one element, which is not changed at all through the experiment, as its unchanging condition permits the association between the other variables being examined to be better comprehended.  


You might be interested in
Marine life zones support organisms adapted to living in freshwater. True False
Ivan

TRUE

PLEASE RATE AS THE BRAINLIEST ANSWER! THANK YOU! :)

6 0
3 years ago
The first species to live on new land, such as that formed from volcanic lava, are called ________.
JulsSmile [24]

The correct answer is D. Pioneer species

Explanation:

In biology, the term "pioneer species" refer to the first species that colonize new environments or environments in which there is no biodiversity for example lands that have been affected by fire, lava, etc. These species are in most cases plants or small organism that are resistant and able to adapt to the harsh conditions of new land. Additionally, this concept differs from keystone and foundation species because these two concepts describe species that have an important role in the ecosystem rather than those that first live on new land. Therefore, the first species to live on new land are the pioneer species.

5 0
4 years ago
What goes 2 what
sattari [20]

The correct matches include the following list-

  • measure of an object's ability to transmit electricity- <u>Resistance</u>
  • potential energy per unit charge- <u>Voltage</u>
  • electric current that reverses direction in a circuit at regular intervals- <u>Alternating current </u>
  • electric current flowing in one direction only- <u>Direct current </u>

Explanation:

(A).  Resistance refers to the obstruction provided to the flow/ transmission of electric charge. Higher the resistance lower would be the transmission of electricity. It is calculated in terms of Ohm.

(B).  Voltage is potential energy generated per charge unit in terms of classical electrostatic physics. In terms of layman language is work done in moving a unit charge from one-point A to the corresponding other point B against the electric field.

(C).  Alternating current means a constantly alternating current which flows in a sinusoidal manner. By alternating nature, it means it reverses its polarity per unit time. They are the prime component of electricity supply to our homes from electricity distribution companies.

(D).  Direct currents are just reverse of Alternating current. By this, we mean that it flows in a fixed direction. They are produced from dry cells commonly.

4 0
3 years ago
What process is responsible for building successive rock layers on earth
inn [45]
The answer is deposition.
3 0
3 years ago
Which process produces converts Carbon Dioxide in to glucose and Oxygen?​
postnew [5]

photosynthesis is the process

6 0
3 years ago
Other questions:
  • When adolescence ends, males have ____ as much body fat as females?
    11·1 answer
  • ___ is the planet that features the runaway greenhouse effect.<br><br>Answer..?
    7·2 answers
  • A host organism needs time, often days, to mount an immune response against a new antigen, but memory cells permit a rapid respo
    5·1 answer
  • What is a dependent variable
    5·1 answer
  • why do you think a significant portion of the U.S. population today still doubts evolution, despite all of the evidence?
    7·1 answer
  • Which of these best lists what a lab report should include?
    7·1 answer
  • The celery and potatoes in the salt water wilted and got soft because there was less water outside the cells. The water left to
    15·1 answer
  • __________ are anaerobic bacteria use carbon dioxide to release energy and produce methane
    14·2 answers
  • Compare visible light to non-visible light, and radio waves to non-visible light.​
    14·1 answer
  • The picture below shows a weather station model at a particular location.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!