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
Levart [38]
3 years ago
7

A group of students designed an experiment to determine the effect of compost on the germination and growth of plants. The stude

nts set up experimental plots by mixing different ratios of soil and compost. They planted 20 pea and 20 melon seeds in each plot and watered each plot regularly. The students recorded the number of seeds that germinated, and as the plants grew, they recorded plant length, number and size of leaves, and general health observations. The following observations were recorded. In all treatments, more pea seeds germinated than melon seeds. There was a week of rainy weather at three weeks. Melon plants developed a fungal growth at four weeks. Melon plants grew longer than pea plants, but many melon leaves showed signs of yellowing as the weeks passed. The students concluded that pea plants grew better in compost than did melon plants. Which of the following best addresses the validity of the conclusion made by the students?
(A) The conclusion is valid because the independent and dependent variables in experiment were controlled.
(B) The conclusion is valid because the experimental design included in a large sample size.
(C) The conclusion is invalid because other variables in the experiment (both biotic and abiotic) affected the results.
. (D) The conclusion is invalid because the units of measurments were not given in experimental design.
Biology
1 answer:
pshichka [43]3 years ago
3 0

Answer: (A) The conclusion is valid because the independent and dependent variables in experiment were controlled.

Explanation: There are some basics requirements in order for an experiment to be valid: hypothesis, monitoring, independent and dependent variables and constants.

You might be interested in
1) Press the green button once and carefully note the spread of the wave. Now select "Slow Motion", press the restart button at
Vlad1618 [11]

Answer:

look it up on quilet

Explanation:they have the answer

4 0
3 years ago
Which parts of the body might you mention if you are describing the cephalic region? Check all of the boxes that apply.
marishachu [46]

Answer:

the ears

the mouth

the top and back of the head

Explanation:

just did the assignment

8 0
2 years ago
Read 2 more answers
The results of the rapid strep test were negative, but the rapid flu test was positive for the influenza virus, type
Elden [556K]
<span>For a patient who tested positive for the influenza virus, type A, the coding system used is code 487.1. This code includes manifestations of laryngitis, pharyngitis, or respiratory infection, both upper and acute.</span>
6 0
3 years ago
Which of the following is an example of an organism growing developing?
Anon25 [30]

Answer:

A frog and humans

Explanation:

A frog develops and changes during its lifecycle,also a human thy grow as they age.

7 0
3 years ago
Read 2 more answers
Why are coastal wetlands important and what are the sources of pollution that affects them?
vaieri [72.5K]
Coastal habitats provide ecosystem services essential to people and the environment. ... Services provided by coastal wetlands include: Flood Protection: Coastal wetlands protect upland areas, including valuable residential and commercial property, from flooding due to sea level rise and storms. pollution kills much of the life that lives there and radically decreases biodiversity
3 0
3 years ago
Other questions:
  • Dna replication results in two dna molecules
    14·1 answer
  • Based on its shape what is most likely the form of bacteria
    15·2 answers
  • Glycolysis and gluconeogenesis are opposing pathways in that they begin or end with the same metabolites and share common interm
    5·1 answer
  • Which of the following is not a method of disposing hazardous wastes?
    15·1 answer
  • Will give brainliest plz help <br> #30
    13·1 answer
  • In meiosis, the original cell is___<br><br> This means it has___sets of chromosomes
    11·2 answers
  • Is flowers consumers or producer
    13·2 answers
  • Listed in blue, please help!! Is biology and chemistry two different things and why?
    11·2 answers
  • What is a change in an organism that allows for it to survive in its
    6·1 answer
  • Which of the following animals are examples of vertebrates? 
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!