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
Natasha2012 [34]
4 years ago
7

What is the most difficult part of a controlled experiment?

Biology
2 answers:
aniked [119]4 years ago
5 0
3.) Testing multiple variables.
Andrej [43]4 years ago
3 0

Answer: testing only ONE variable

You might be interested in
Indicate what develops when abnormal cells divide and create other abnormal cells:
Annette [7]
Oncogenes are the abnormal cells that divide and create another abnormal cells. When abnormal cell division occurs, tumor may be developed. <span>When a tumor is considered cancerous, it is called. malignant.  Benignant on the other hand is the tumor that it's not dangerous and not cancerous.</span>
8 0
3 years ago
When sperm and ovum unite at conception, a(n) __________ results. autosome gamete zygote allele?
frosja888 [35]

Answer;

-Zygote

When sperm and ovum unite at conception, a zygote results.

Explanation;

-Conception occurs when a sperm cell from a fertile man swims up through the vagina and into the uterus of a woman and joins with the woman's egg cell (ovum) as it travels down one of the Fallopian tubes from the ovary to the uterus.

-A zygote is the union of the sperm cell and the ovum. Also known as a fertilized ovum, the zygote begins as a single cell but divides rapidly in the days following fertilization. After this two-week period of cell division, the zygote eventually becomes an embryo.

3 0
4 years ago
If this stopped working, no glucose or oxygen would be produced.
Sedbober [7]

Answer:

I am not sure but I think it is ribosomes.

8 0
3 years ago
Which of these is a plant organ responsible for absorbing light energy to make food?
mrs_skeptik [129]

Answer:

The answer is leaf . Leaf is exposed to sunlight and thus it can store light energy

4 0
3 years ago
Read 2 more answers
Why is a turtle slow?
Basile [38]

The main reason is because they are heavy, and because they don't have to chase their food. They're not predators and their shells give them protection like running away gives protection to other herbivores.

7 0
3 years ago
Other questions:
  • What are the awsners to 3?
    11·2 answers
  • Organelles and other cellular material are held within a cell by which of the following?
    6·1 answer
  • Which of the following best explains why humans need constant supplies of fresh water?
    9·2 answers
  • What is a flat irreguraly shaped cell that make up the top and, bottom layers of leaves
    11·1 answer
  • Which type of cell is more complex? a) Prokaryote b)Eukaryote c)Both d) None of the above
    10·2 answers
  • You are a world famous scientist who has discovered the gene that codes for a specific protein used to dissolve blood clots in h
    11·2 answers
  • Katie Johnson, a 15 year old female, is brought to the Emergency Room by her mother because of abdominal cramping and vomiting.
    14·1 answer
  • Which viral vectors are more commonly used when stable integration into the genome is required for treatment?
    11·1 answer
  • True or false: The parachute on a dandelion seed makes it easily transported by animals.
    12·1 answer
  • When something rust,
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!