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
Mazyrski [523]
3 years ago
8

A student poses the question: How does the presence of dissolved salt affect the freezing point of water? To answer this questio

n, the student set up two conditions. In the first condition, the student added salt to water in a container and referred to this condition as the variable. In the second condition, the student did not add any salt to water in a second container and referred to this condition as the control. The student took both containers and attempted to freeze the water at various temperatures to assess the freezing point. Would this be a valid experiment?
A. Yes, because there is more than one variable.B. Yes, because there is one variable and a controlC. No, because there is not more than one variableD. No because there is only one variable and a control
Biology
1 answer:
Sholpan [36]3 years ago
8 0

Answer:

The answer is A.

Explanation:

The example experiment given in the question would be a valid experiment because there is more than one variable.

For an experiment to be valid, there have to be a dependent variable, an independent variable, a constant and a control aspect.

In the example, we can say that the independent variable which has the direct effect on the aspect that we are looking for, the freezing point, is the amount of salt in the water. Therefore the dependent variable is the freezing point which is the part being observed for any change. The constant can be the amount of water used because it is static and the control can be the temperature the mixtures are exposed to which does not change throughout the experiment.

Therefore the answer is option A.

I hope this anwer helps.

You might be interested in
Then the red blood cells travels to the ___________ system
Hoochie [10]

its the circulatory system

7 0
4 years ago
Read 2 more answers
Find the word to correctly describe the action that makes a vector successful
icang [17]

Answers in order from top to bottom for statements on the left side of page.

1. Activate

2. Avoid

3. Integrate

4. Target


6 0
3 years ago
What happens during aerobic respiration? A Oxygen is produced. B Glucose is produced. с Lactic acid and oxygen are produced. D A
Romashka [77]

Answer:

ATP, water and carbon dioxide are produced.

4 0
3 years ago
How does a virus cause disease?
nika2105 [10]

Answer:

Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves. This can kill, damage, or change the cells and make you sick. Different viruses attack certain cells in your body such as your liver, respiratory system, or blood.

Explanation:

Viruses tend to target specific tissues (cells) in the host.

For example, the influenza virus has a predilection for the respiratory tract, hepatitis viruses target the liver, polio virus targets the motor neurons of the spinal cord and rotavirus multiplies in the gut. Symptoms of a viral infection may be subtle and nonspecific or specific and suggestive of the causative agent.

Dengue virus, Ross river virus, measles and rubella infections are associated with fever and a widespread red rash, chicken pox and herpes simplex viruses are associated with blistering, often localized, rashes; and hepatitis viruses cause liver damage and jaundice.

Bacteria tend to be less tissue-specific and non-discriminatory than viruses and can cause a variety of infections once they have invaded the host.

These bacterial infections are often manifested by the presence of pus wherever the bacteria settle, and systemic symptoms such as fevers, chills, pain, swelling and loss of function occur when bacteria invade and multiply.

8 0
3 years ago
A scientist has discovered a new plant species in the Amazon rainforest. She tells her fellow scientists that the plant she has
tatiyna

Answer:

<em>The correct option is C) It does not depend on insect pollination.</em>

Explanation:

Angiosperms can simply be described as the plants which produce flowers whereas gymnosperms are the plants which do not produce flowers.

Both, the gymnosperms and the angiosperms, are capable of producing seeds. However, the seeds of the angiosperms are enclosed in an ovary. The seeds of gymnosperms are not enclosed.

<u><em>One of the major differences between gymnosperms and angiosperms is that the angiosperms have to depend on animals for pollination. On the other hand, the seeds of gymnosperms are spread through the wind and are pollinated.</em></u>

7 0
3 years ago
Other questions:
  • Explain the Digestive system in human beings
    12·1 answer
  • The epa studies pollution and other environmental health hazards. (1 point) true or false
    9·2 answers
  • What chemical processes can occur during metamorphism and deformation?
    15·1 answer
  • What Is Newtons Law And How Many Laws Are There.?
    6·2 answers
  • Summarize how the actions of the heartbeat make their first and second sounds.
    13·1 answer
  • In dr. Losos experiment, why was it important that the experimental islands lacked lizards
    6·2 answers
  • The nervous system is the major _____________ system of the organism.
    12·1 answer
  • A gene mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is
    9·1 answer
  • Science. Help I really need this giving brainliest to the person with the correct answer, please explain your answer...........
    6·1 answer
  • How do matter and energy interact in a food web or energy pyramid model?​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!