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
alexandr402 [8]
3 years ago
10

Which bet describes the purpose of a control sample?

Biology
1 answer:
AlladinOne [14]3 years ago
6 0

Answer:

i would say the last one

Explanation:

You might be interested in
WILL GIVE A BRAINLEST
Bingel [31]

Answer: Primary succession

Explanation:

Primary succession occurs when living organisms colonize (appear on) a newly found area. So, since the retreating glacier (a large body of ice flowing downwards) resulted in a new environment, it tells that no living organisms previously existed in the area.

Therefore, the presence of nutrients in the lake would then support new life activities brought by the various species of living organisms.

Thus, primary succession occurs

7 0
4 years ago
Which macromolecules are often made of three fatty acid‘s bond to a glycerol molecule.
grandymaker [24]

Answer . These two molecules form what is known as a triglyceride or a fat. Two common forms of triglycerides are saturated and un saturated fats.. so basically lipids

B. Lipids.

3 0
3 years ago
Read 2 more answers
Drag each label to the correct location. Match the food item to its nutrient group.
Rus_ich [418]

I am assuming you mean the nutrient groups of macronutrients and micronutrients.


Macronutrients:

<em>fats</em>

<em>carbohydrates</em>


Micronutrients:

<em>calcium </em>

<em>zinc</em>

<em>vitamins</em>

Hope this helped :)


7 0
3 years ago
Read 2 more answers
A forensic scientist in using a standard biological microscope with 15 objective and 5 eyepiece to examine a hair from a crime s
SIZIF [17.4K]

The given data is Magnification, M = 15

Length of the tube , L = 16 cm

The focal length of the lens can be calculated by:

M = L/F

Substituting the value, we get:

15 = 16/f

f = 16/15

f = 1.067 cm

Using the equation of magnification we get,

M = v/u

Substituting the values we get:

15 = v/u

v = 15 u

With the help of lens formula, calculate the object distance:

1/f = 1/v + 1/u

Substituting the value we get,

1/1.067 = 1/15u + 1/u

0.937 = 1.067/u

u = 1.13 cm or 1.1 cm.

Hence, the object distance is 1.1 cm.


3 0
3 years ago
What type of chemical bond if formed when one atom loses an electron and another atom gains an electron ?
tankabanditka [31]

Answer: ionic bond

Explanation: Ionic bonding is the complete transfer of valence electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.

7 0
4 years ago
Read 2 more answers
Other questions:
  • 4. Compare the characteristics of
    8·1 answer
  • What might be an advantage of having more than one codon for the same amino acid?
    5·1 answer
  • Which two factors can both cause a population to increase
    11·2 answers
  • Cells of the immune system are able to respond to the presence of invading organisms because they recognize the
    13·1 answer
  • If an organism has six pairs of chromosomes, how many different gametes can be produced?
    10·1 answer
  • Why do you think people believe some theories even if they´re not supported by scientific evidence?
    6·1 answer
  • Why should organisms that produce more offspring have a more likely chance of survival?
    14·2 answers
  • What are the inputs of photosynthesis? Can someone explain what this question means
    10·1 answer
  • 1. What are the principles of population growth?<br><br> 2. What are the limits of the environment?
    15·1 answer
  • The peripheral nervous system includes
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!