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
Kruka [31]
3 years ago
6

Trey is conducting an experiment to determine which fish food causes the most goldfish activity over a period of two weeks. He i

s going to set up ten fish tanks with 4 goldfish each. He will feed the fish in half of the tanks Swift Salmon food and the fish in the other half of the tanks Fast Flounder food. He will expose them to direct sunlight for 4 hours per day. Each tank will have the same size and type of goldfish, which will be fed the same amount of fish food. Each tank will be filled with the same type and amount of water and with the same type and amount of river rock.
Which change would be the most effective way to improve the validity of this experiment?
A) Increase the number of goldfish in each tank.
B) Increase the daily amount of food for each tank.
C) Create another group that is fed regular fish food.
D) Increase the number of tanks in each treatment group.
Biology
1 answer:
statuscvo [17]3 years ago
6 0

Answer: C)

Explanation: You need a control group.

You might be interested in
Based on the concept of phylogeny, an organism that was ancestral to both the bacteria and eukaryota domains would exhibit which
Helen [10]
"It would have DNA." is the one among the following characteristics that would be exhibited based <span>on the concept of phylogeny, an organism that was ancestral to both the bacteria and eukaryota domains. The correct option among all the options that are given in the question is the third option or option "C". </span>
5 0
3 years ago
Read 2 more answers
How does oxygen enter your<br> bloodstream?<br> Please help
AleksandrR [38]

Answer:

haemoglobin

Explanation:

Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. A protein called haemoglobin in the red blood cells then carries the oxygen around your body

7 0
2 years ago
Both nitrogen and carbon are building blocks for life because they are needed in ____?
meriva
D) All of the above
That's why we're called Carbon-Based Lifeforms
8 0
3 years ago
Read 2 more answers
Several tissues make up a ?
azamat
Skin muscle etc.yk look it up too :()
8 0
3 years ago
Which of the following is NOT one of the three major types of stimuli to trigger endocrine glands to manufacture and release the
almond37 [142]

Answer:

option C. permissive stimuli

Explanation:

The three major kinds of stimulus that triggers the endocrine glands to synthesize and release hormones are humoral stimuli, hormonal stimuli and neural stimuli. The humoral stimulus regulates the release of hormones with the changes in the concentration of extracellular fluids. For example, the increase of glucose concentration in blood causes pancreas to release hormone insulin.

The hormonal stimuli allows secretion of hormone only with the secretion of any other hormone. The hypothalamus gland secretions allows the anterior pituitary gland to secrete hormones. The release of thyroid hormone is an example of hormonal stimuli.

The neural stimuli allows the production of hormones directly from the glands. The production of epinephrine and norepinephrine hormones are the example of neural stimuli. Thus, option C is correct.

6 0
3 years ago
Other questions:
  • What is the benefit of groundnut in the body?
    15·1 answer
  • What biological macromolecule is made up of monomers like the one shown below?
    14·1 answer
  • One of your lab partners has followed the recommended procedure of running Gram-positive and Gram-negative control organisms on
    14·1 answer
  • Is this statement true or false? A spider is an arthropod. Like the other animals in the phylum, it has jointed legs, a segmente
    10·2 answers
  • Which of the following results in the highest number of cases of foodborne illness?A. norovirusB. SalmonellaC. Clostridium perfr
    8·1 answer
  • What is the uneven breakage of a mineral called? crystal form fracture cleavage hardness
    6·2 answers
  • How many protons does oxygen (O) have?<br> a) 2<br> b) 4<br> c) 8<br> d) 16<br> e) 32
    13·1 answer
  • Which of these is true of how plants use pollen to reproduce? (
    5·2 answers
  • Second page <br> only one person understand
    5·1 answer
  • Que tiene que ver la aplicacion de las leyes de mendel en el grupo sanguíneo
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!