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
bagirrra123 [75]
2 years ago
7

How many variables can a scientist change during a scientific investigation?

Biology
2 answers:
Nastasia [14]2 years ago
6 0

Answer:

Three

Explanation:

notka56 [123]2 years ago
6 0

Answer:

Three

Explanation:

You might be interested in
PLEASE HELP ME! ILL MARK BRAINLIEST!
snow_lady [41]

Answer:

ExplanationA coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.

4 0
2 years ago
Which of these engulf bacteria and break them down
dolphi86 [110]

Answer:

Phagocytes

Explanation:

3 0
3 years ago
Read 2 more answers
Which white blood cell type is not correctly matched with its proper function or feature?.
Bezzdna [24]

Answer:

basophils:

Explanation:

primary phagocytic cells type that fights infection

5 0
2 years ago
The skeletal system is the body system composed of bones and cartilage and performs the following critical functions for the hum
tigry1 [53]

Answer:supports the body

facilitates movement

protects internal organs

produces blood cells

stores and releases minerals

Explanation:

The skeletal system in animals helps in their movement, support and to maintain their shape.In humans ,it consists of bones,which works closely with the muscular system.unlike worms and arthropods that have hydrostatic and exoskeleton respectively, humans have endoskeleton.the bones have the following functions;

*It allows the animal move . The skeleton provides support for the body and through the flexible joints ,the body is able to move

*The skeleton protects the internal organs of the body by protecting them against impact.for examples,the ribs protect the lungs and the skull protects the brain.

*Certain cells in the bone produce immune cell and important components of the bone

*The bones also regulate the level of calcium in the blood

8 0
3 years ago
Read 2 more answers
Which of the following is an example of how culture can help humans survive?
mario62 [17]

Answer: Option D

Explanation:

The practice which has been prevailing from a long time is considered as culture.Farming is also a type of culture which is being practiced from a longer period of time in the society.

The farming is also a type of culture which was invented somewhere and started spreading from there to other places.

This practice helped mankind  in providing food and resources to the people of nation.

3 0
3 years ago
Other questions:
  • During an attempted robbery, a 20-year-old man of average body build is stabbed once with a long, narrow knife. Initial examinat
    15·1 answer
  • Are there different kinds of bacteria
    9·2 answers
  • What is the relationship among phylum,class and order?
    5·2 answers
  • In the microscope activity, you viewed some of the same specimens under multiple microscopes. Describe the differences in what y
    11·1 answer
  • Which of the following is a sustainable practice?
    12·2 answers
  • Which of the following would be an accurate statement about achieving a balanced budget?
    7·2 answers
  • Why forests are called green lungs of nature?
    13·1 answer
  • ANSWER ASAP: Dead zones are caused largely by the input of agricultural fertilizers that stimulate phytoplankton blooms, which d
    15·1 answer
  • How is a cell a system?
    11·2 answers
  • Examples of heterotroph plants​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!