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
Digiron [165]
3 years ago
8

Sally wants to know why the leaves of her plants are turning yellow. She suspects it is because the plants are not receiving eno

ugh nutrients. To test her hypothesis, she devises the following experiment.
First, Sally obtains four identical green plants. Then, she places each plant in separate, but identical pots, with the same type and amount of soil. Although Sally gives each plant the same amount of water and Sun exposure each day, she changes the amount of fertilizer placed in each pot. Finally, she records the number of yellow leaves that she sees in each pot every day over the course of one month.

What is the dependent variable in Sally's experiment?
A.
the number of yellow leaves
B.
the type of green plant
C.
the amount of water
D.
the amount of fertilizer
Biology
2 answers:
OleMash [197]3 years ago
7 0

The correct answer is option A, that is, the number of yellow leaves.  

An independent variable refers to the variable, which is monitored or modified in a scientific experiment to examine the influences on the dependent variable. A dependent variable refers to the variable being measured and examined in a scientific test. Hence, in the given case, the number of leaves getting yellow is a dependent variable.  

Both the dependent and the independent variables may be observed in terms of the cause and effect.  


Jlenok [28]3 years ago
6 0
<h2>Answer:</h2>

The correct answer is option A which is the number of yellow leaves.

<h3>Explanation:</h3>
  • In mathematics modeling , or statistical analysis or in scientific experiments a n independent variable is considered as the input of experiment and it can be changed depending upon the protocols.
  • Dependent variable is the out put of the experiment, that depends upon the independent variable.
  • In the above experiment, sally wants to know about the number of yellow leaves upon changing the fertilizer amount. So input means yellow leaves are dependent variable.
You might be interested in
Zones in lakes and oceans are delineated by depth, distance from shore, or light penetration. Different zones have different phy
Sophie [7]

Answer:

a.) freshwater plants may be rooted here--- Shore

b.) littoral zone--- it is the region of a lake or pond that is nearest to the shore

c.) limnetic zone--- A region of open water in lakes and ponds.

d.) alternately dry and submerged--- Intertidal Zone

e.) extends to edge of the continental shelf--- Neretic Zone

f.) generally low nutrient levels

g.) light penetrates here--- Photic Zone

h.) no photosynthesis occurs here--- Aphotic Zone

i.) benthic zone--- this is purely known as the bottom of the lakes or oceans

6 0
2 years ago
Why do phospholipids form a bilayer in water
Gre4nikov [31]
Phospholipids will form a bilayer in water because they contain hydrophobic (Water fearing.. in this cause water "hating") tails and hydrophilic heads (water loving). So they form a bilayer to remove the tails from water likewise, this satisfies the hydrophilic heads because they are still exposed to water.
8 0
2 years ago
An individual that is heterozygous for two linked genes has the genotype a b/a b, which means that the aand b alleles are in one
mylen [45]
The recombinat types are AB, and ab.
Genetic recombination involves the production of offspring with combinations of traits that differ from those found in either parent. In our case the parents are Ab and aB, which is not the same as the offsprings (AB,ab). During meiosis in eukaryotes, recombination involves the pairing of the homologous chromosomes a process. 
5 0
2 years ago
What will happend if 50% of the worlds forest dies out?​
melomori [17]

Answer:

not enough clean oxygen being produced for us to breathe, loss of habitat for countless species causing them to possibly go extinct.

8 0
2 years ago
Read 2 more answers
Please help ASAP please, I can't answer these questions please help
Soloha48 [4]

Answer: Sea walnuts are marine invertebrates. They belong to the genus Mnemiopsis.

Explanation:

These animals have stinging tentacles like jelly fish and they often cast up or come to the sea shores where if they come in contact with humans can harm them by stinging.

The barrier if kept along the side of the sea shore and not allowing humans to reach to the shore can help in preventing the harm from these animals. The introduction of the predatory animals in the sea can also help in reducing their population.

The three benefits for removing the sea walnut:

1. The population of other species will increase as sea walnut is an invasive species.

2. The balance of the marine ecosystem can be maintained.

3. Humans can be protected from the harm caused by these animals.

8 0
3 years ago
Other questions:
  • What is the function of a chloroplast?
    11·2 answers
  • Everglades National park has a very large population of white tailed-deer.wich of these changes within this habitat is MOST LIKE
    8·1 answer
  • If a cell skipped metaphase during mitosis, how might this affect the two daughter cells?
    9·1 answer
  • Two species of birds called cuckoo doves live in a group of islands off the coast of New Guinea. Out of the 33 islands, 14 islan
    7·1 answer
  • What might occur if the sphincter between the esophagus and stomach doesn't close correctly, and some of the stomach contents en
    5·1 answer
  • When the hanging wall moves up relative to the footwall it is a blank fault
    12·2 answers
  • Explain how the energy of a marble is transformed as it rolls down a ramp. Give evidence that energy of the marble remains the s
    6·2 answers
  • The most important factor affecting the hydrostatic pressure in the glomerulus is __________.
    10·1 answer
  • Which statement describes the offspring of the F1 generation when crossing a pea plant that is true breeding for green seeds wit
    5·2 answers
  • How are Nonvascular and Vascular seedless plants alike? How are they different?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!