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
Alona [7]
3 years ago
11

A scientist wanted to study the effect of a drug on the blood pressure of rats. She set up an experiment in which the experiment

al group consisted of rats that were injected with a salt solution containing the drug. What should the control group have consisted of?
Biology
1 answer:
Georgia [21]3 years ago
3 0
 <span>The control group would not receive any medication or they would be given the salt solution without any drugs with it (basically a placebo). 

A dependent variable is a variable dependent on another variable: the independent variable. In simple terms, the independent variable is said to cause an apparent change in, or simply affect, the dependent variable. 

The variables you have are what the rats are feed (their diet), number in cage, size of the cage (things such as a smaller care with more within it should cause undue stress), what they are exposed to within their environment. Even things sun as amount of light within the room, the temperature of the room, etc. </span>
You might be interested in
Prairie dogs are a species whose very presence contributes to the existence of the ecosystem in which it lives. Prairie dogs con
Andrew [12]

Answer:

Explanation:

Key stone species

6 0
2 years ago
What does it means when multiple genes determine a trait
schepotkina [342]

Answer:

Polygenic.

Explanation:

A trait that is controlled by more than one gene is called polygenic which translates to "multiple genes".

6 0
2 years ago
Why is it difficult to attach a value to the aesthetic qualities of biodiversity
Mumz [18]
<span>everything has different aesthetic qualities you can put a price on it.

Hope this helps!

-Payshence xoxo</span>
7 0
3 years ago
Please HELP!! Place the events 1 to 7 in order of how they happen during speciation.
hoa [83]

Answer:

6, 3, 4, 5, 7, 2, 1

Explanation:

Here, speciation occurs because the original butterfly population gets separated into two populations, each facing a different set of environmental conditions. Initially, there was just a single population of butterflies in the valley and all butterflies were able to mate with each other. A fire destroyed their habitat so they had to migrate to other areas. Some butterflies migrated to eastern side of mountain and some to western side of mountain.

Now there were two butterfly populations and they faced different environment from each other. Over the time, the populations adapted to their local surroundings and started to accumulate changes in their genome. Their gene pools started to separate from each other. Eventually they evolved into two different species. When their old habitat was restored in the valley, they returned once again. However, this time they were not able to interbreed because they were now two different species.

3 0
3 years ago
What colors are tissues that contain only xanthophylls
mr_godi [17]

Answer:

Light Wavelengths for: Xanthophylls and Carotenes Typically, xanthophylls are yellow while carotenes are orange. It is these pigments that give carrots, yellow peppers, and pumpkins their color.

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • A unique feature of dna is that it can duplicate itself through a process called
    8·1 answer
  • Put the following terms in order of decreasing size
    15·1 answer
  • Organic compounds ALL contain the element carbon. Which organic compound, used for stored chemical energy, contains
    14·1 answer
  • The convection that causes Earth's magnetic field happens in Earth's _____.
    9·2 answers
  • Capillaries are part of which body system?
    12·2 answers
  • A water molecule has to pass through various organelles of a plant cell before reaching the nucleus. List in order the path that
    8·2 answers
  • A population of cheetahs has a birth rate of 5 and a death rate of 15. Immigration is 2, and emigration is 4. What is its popula
    11·2 answers
  • The theory of endosymbiosis is based on Multiple Choice similarities between chloroplasts and other organelles in animals. evide
    12·2 answers
  • Brainliest involved:)
    14·1 answer
  • It is estimated that the world human population reached 3 billion people in 1959 and 6 billion in 1999. Assuming a carrying capa
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!