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
iogann1982 [59]
3 years ago
7

An ecologist observes that the diet of a bird species consists primarily of large grass seeds (as opposed to smaller grass seeds

or the seeds of other herbaceous plants found in the area). He hypothesizes that the birds are choosing the larger seeds because they have a higher concentrations of nitrogen than do other types of seeds at the site. To test the hypothesis, the ecologist compares the large grass seeds with the other types of seeds, and the results clearly show that the large grass seeds do indeed have a much higher concentration of nitrogen. Did the ecologist prove the hypothesis to be true? Can he conclude that the birds select the larger grass seeds because of their higher concentrations of nitrogen? Why or why not? If you suspect an additional factor may involve, state your hypothesis and the design of an experiment to test your hypothesis
Biology
1 answer:
omeli [17]3 years ago
4 0

Lets understand the given passage.

An ecologist <u>observes that the diet of a bird species consists primarily of large grass seeds</u> (as opposed to smaller grass seeds or the seeds of other herbaceous plants found in the area).

<u>He hypothesizes that the birds are choosing the larger seeds because they have a higher concentrations of nitrogen than do other types of seeds at the site</u><u>.</u>

<u>To test the hypothesis, the ecologist compares the large grass seeds with the other types of seeds, and the results clearly show that the large grass seeds do indeed have a much higher concentration of nitrogen.</u>

No, he cannot conclude that the birds select the larger grass seeds because of their higher concentrations of nitrogen. The hypothesis testing done by the ecologist is incomplete as he failed to set up a control in the experiment. The control would have been the birds feeding on large seeds that lack or are low on nitrogen content. This will establish a relation between the bird's diet and the size of the seeds and the nitrogen content of the seeds. It could be true that birds do not care about the nitrogen content but simply prefer larger seed sizes.

Another problem associated with his field experiment is the failure in noting the beak sizes of the birds. The beak size and shape enable a bird to break and eat seeds. Larger beaks fail at breaking open smaller seeds. This observation would add bird beak size as another variable of the experiment.


You might be interested in
What is the main difference between renewable and nonrenewable resources
Julli [10]
<span>The main difference of renewable and non-renewable resources lies in the capacity of the environment to replenish itself. Renewable resources are resources that can be easily replenished by the environment over a short period of time, while non-renewable resources take more time. <span>

Examples of renewable resources are solar energy, harnessing the sun's power that shines day to day. Wind energy that exists naturally is also a renewable source. Geothermal energy, heat coming from the center of the Earth, and Biofuels, fuels made from living organisms, are all renewable energy. 

<span>Non-renewable energy resources are the fuels we use in our cars, minerals from the soil, coal, among others are supplies that also come from Earth. These are all materials that might take a long time (probably millions of years) to be fully restored. </span>


</span></span>
4 0
3 years ago
Read 2 more answers
What are three differences between dna and rna?
Gelneren [198K]
DNA
1. Found in nucleus
2. Sugar is deoxyribose
3. Bases are A, T, C, and G
RNA
1. Found in nucleus and cytoplasm
2. Sugar is ribose
3. Bases are A, U, C, and G
8 0
3 years ago
Read 2 more answers
All of the following are considered a higher-order trait in Hans Eysenck's hierarchy of traits except ____________. psychoticism
podryga [215]

Answer:

According to Quiz let, D

Explanation:

7 0
3 years ago
Read 2 more answers
Which is a use for clay? ceramics batteries plaster chalk
Lapatulllka [165]

Ceramics

Explanation:

nothing much

search

3 0
3 years ago
Read 2 more answers
The distance from one molecule in a body to the nearest molecule in the body occupying a similar position and moving in the same
creativ13 [48]
The answer is wavelength. It is the distance between corresponding points of two consecutive waves (corresponding points are particles or points in the same phase, meaning the points have completed identical fractions of their periodic motion. In a transverse wave it is the distance between two successful crests or troughs while in a longitudinal wave is the distance between two successful compressions or rarefactions.
4 0
3 years ago
Other questions:
  • During a controlled experiment, no fewer than 2 factors are tested at one time.
    12·2 answers
  • How do you know that your pregnant? How long does it take to know if you are pregnant
    9·2 answers
  • Eukaryotic organisms that are neither fungi, plants, nor animals are members of which kingdom?
    10·1 answer
  • Match each type of cell junction with its description.
    9·1 answer
  • How do different organisms affect enzyme rates
    14·1 answer
  • human heart cells require a constant release of energy to function continuously. which structure would be a numerous in such cel
    6·2 answers
  • The process by which eggs are made is called​
    13·1 answer
  • What tests can be used to diagnose phenylketonuria?
    13·2 answers
  • The chief port of Ecuador is:<br><br> Quito<br> Guayaquil<br> Otavala<br> Cuenca
    6·1 answer
  • १<br>5) सौर्य ऊर्जा किन सस्तो मानिएको हो​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!