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
ryzh [129]
3 years ago
8

What is the difference between a control and a variable?

Biology
1 answer:
Alla [95]3 years ago
3 0
N an experiment the "control" is the group of people or object this is used to measure the effect of the variable. The "control" is the thing that does not change and is not the thing in question.

In an experiment the "variable" is the thing which is changed and manipulated by the experimenter. It is the effect of something,

Example: You want to test a drug. you get a group of 40 people. 20 people are given the pill, 20 people are not given the pill but a sugar pill. the people who have the pill is the "variable" and the people who dont have the pill is the "control".
You might be interested in
A mutation can cause a defect in human hemoglobin which would result in this type of mutation
babunello [35]

sickle cell disease

8 0
2 years ago
30) A food web models how the matter eaten by organisms moves through an ecosystem. The arrows in a food web represent how matte
Natali5045456 [20]

Answer:

A) Silver maple

Explanation:

When looking at the food web, you can see that the arrow pointing at the beaver is going from the silver maple.

6 0
2 years ago
According to the results for Patient 1 shown above, which antigens were present in Patient 1’s blood? Check all (if any) that ap
soldier1979 [14.2K]

Answer:

A.

Explanation:

Patient 1 has Type A blood because agglutination occurs due to reaction with anti-B. We know that A blood group has antigen A and it is anti-B means that they attack on B type of blood cells while on the other hand, B blood group has antigen B and it is anti-A means that they will attack on the A type blood cells upon mixing. So according to the chart, there is nothing happens by reaction of the blood with anti-A whereas agglutination occur by reaction with anti-B so we can say that the patient has type A blood.

7 0
2 years ago
Read 2 more answers
Areas of the Earth near the equator receive large amounts of solar energy. How does this lead to increased rainfall?
pickupchik [31]

Answer:

D

Explanation:

The heat will make water evaporate at a higher rate thus causing more rain

6 0
3 years ago
I need help on acrostic writing?
Rainbow [258]
Relaxing into the breath
Exhaling
Soothing thoughts
Pulling new air inside
Inhaling
Repeat
All the oxygen to your brain
Taking your time
Intermittent
Onwards and upwards
Nice and deep
7 0
3 years ago
Other questions:
  • C is incorrect help me
    8·1 answer
  • What type of cell is formed during meiosis?
    13·2 answers
  • Does every organism have the same number of chromosomes?
    13·2 answers
  • What is the structure and functions of mammalian cells compartments
    7·1 answer
  • Organisms can be ______________, where they are composed of only 1 cell, or they can be __________ where they are composed of ma
    10·1 answer
  • A hormone that takes a while to produce an effect is most likely reacting in which manner?
    15·1 answer
  • How are rainbows made?​
    14·1 answer
  • If your body is capable of making only certain amino acids, how do we get the essential amino acids we need?
    10·1 answer
  • Why do Galapagos sharks lie still on the ocean floor?
    9·1 answer
  • Which part of a living cell is responsible for producing energy?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!