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
katovenus [111]
3 years ago
12

Which of the following must be met for a scientifically valid sample? Subjects are selected:

Biology
2 answers:
ddd [48]3 years ago
6 0

Answer:

The correct answer is: A. and D.

Explanation:

  • In order to scientifically validate a sample, it is necessary that,
  1. The entire population under study should be considered to obtain an average or a mean data. If only a part of the population is considered then the result obtained would be a biased one. A biased data will not represent the entire population and so it would be incorrect.
  2. The sample choice done must be at random covering all the areas of the population to get the accurate result. This is because random selection lowers the possibility of getting biased.

amid [387]3 years ago
3 0

Answer:

A. and D. For apex :) good luck

Explanation:

You might be interested in
Energy from the Sun is first transferred to
tamaranim1 [39]

Answer:

Producers (plants) / Consumers

Explanation:

4 0
3 years ago
Suppose that life exists elsewhere in the universe. all life must contain some type of genetic information, but alien genomes mi
Snowcat [4.5K]
<span>While alien genomes may be constructed by completely different molecules (for example, silicon based life forms are a possibility rather than carbon) it is logical to assume that all life forms would have some sort of protective mechanism to prevent the degradation of DNA during replication. Essentially, to prevent mutations and rapid aging, DNA, alien or otherwise, would have some types of telomeres. They might either be long chains of repeated or irrelevant code or molecules that would not be easily corrupted.</span>
3 0
3 years ago
Lacrimal secretions contain a type of antibody that blocks the passage of antigens to deeper internal tissues. Which type of ant
Gelneren [198K]
The lacrimal<span> glands secrete tears which act to lubricate and protect the cornea and eyeball from injury which may result from small particles such as dust. Tears are a watery fluid with an electrolyte content similar to that of plasma and contains: bactericidal enzymes known as lysozyme and lactoferrin.</span>
8 0
3 years ago
Which of the following is true?
Lyrx [107]

You need to give context to this question..... or a picture.....

6 0
3 years ago
The diagram below shows four positions of the Moon. Which position produces the highest possible tides?
Nookie1986 [14]

Answer:

Full moon and New Moon

7 0
3 years ago
Other questions:
  • Chromosomes control cell processes. They do this by____
    15·1 answer
  • Any names of animals that start in letter "N"? any names of animals that start in letter "N"
    10·1 answer
  • Which of the following organisms is located only in the 3rd trophic level of the soil food web?
    6·2 answers
  • Select choices that result from hydrogen bonding.
    12·1 answer
  • Responding to the environment is a characteristic of life best shown by which example?
    13·2 answers
  • 3. Once the Recombinant DNA is placed back in the bacteria cell what<br> starts to occur?
    10·1 answer
  • Histones are essentially identical in sequence/structure in all eukaryotic organisms from yeast to plants to animals. What does
    6·1 answer
  • Los Parques Nacionales Naturales de Colombia se caracterizan porque:
    9·1 answer
  • Question 13 of 25
    13·2 answers
  • Why is it so important for animals to keep the concentration of their body fluids constant​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!