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
Anna35 [415]
3 years ago
11

You want to estimate the number of canvas backs (a type of duck) at the Sacramento Wildlife Refuge. In two days you capture 200

canvas backs, mark all of them and release them. One month later you capture another 200 canvas backs, of which 100 were marked by you last month. Calculate an estimate for the population size of canvas backs.
A. 400
B. 100
C. 200
D. 300
E. 600
Biology
1 answer:
Vsevolod [243]3 years ago
7 0

Answer:

Option A 400 individuals

Explanation:

Using this formula, we can estimate the population size of the canvas backs as this is a capture-recapture method.

N = (MxC) / R

Where N = estimated Number of individuals in the population

M = number of individuals captured and Marked = 200

C = total number Captured the second time (with and without a mark) = 200 and

R= number of individuals Recaptured (those with a mark) = 100

Thus, we have

N = (MxC) / R

= (200 x 200) / 100

= (40,000) / 100

= 400 individuals.

You might be interested in
Some bacteria viruses parasites and fungi can cause an illness. these are known as?
yawa3891 [41]

Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites.

<h3>What are viruses bacteria and parasites?</h3>

Viruses, bacteria, and parasites live organisms that are found all around us. they're in water and soil. they're on the surfaces of foods that we eat. they're also on surfaces that we touch, like Counter top in the bathroom or kitchen. Some bacteria sleep in and on our bodies and don't cause problems.

<h3>Which are infectious diseases?</h3>

The flu, measles, HIV, streptococcal sore throat , COVID-19 and salmonella are all samples of infectious diseases. Cancer, diabetes, congestive coronary failure and Alzheimer's disease are all examples of noninfectious diseases.

What are the causes of disease?

Similarly, diseases are caused by different microorganisms and may be classified as diseases caused by bacteria, fungi, viruses etc. Some diseases also are caused by multicellular organisms such as worms.

Learn more about infectious diseases :

brainly.com/question/14083398

#SPJ4

5 0
1 year ago
What is the power house of the cell?
ANEK [815]

Answer:

Mitochondria is the powerhouse of the cell

Explanation:

Pls mark as brainliest

8 0
3 years ago
Read 2 more answers
What bone does not articulate with any other bone
noname [10]

Answer: The Hyoid Bone

Explanation: The hyoid bone helps to support the tongue and elevate the larynx when you talk or swallow. It's the only bone of the body that does not articulate with any other bone.

5 0
2 years ago
Read 2 more answers
4) Explain the term "endoskeleton". 5) What is an exoskeleton?​
Elena-2011 [213]

Answer:

Below

Explanation:

4) An endoskeleton is an internal skeleton made out of mineralized tissue that is attached to muscles as well as enabling movement.

5) An exoskeleton is the external skeleton that supports and protects an animal's body. As an example, a snail's shell is an exoskeleton

Hope this helps :)

5 0
2 years ago
A female rabbit of phenotype c’ is crossed to a male rabbit with c ch. The F1 is comprised of five rabbits with a c’ phenotype,
mojhsa [17]

Answer:

Option E, c is recessive to both c’ and c ch

Explanation:

As it is given in the question that when phenotypically c female rabbits are crossed with father with phenotype cch , the offspring produced have only cch phenotype which means that allele cch is dominant over allele “c”

Now in the F1 cross, when a female rabbit of phenotype c’ is crossed with cch male rabbit, then also c’ is expressed over “c” allele.  

Hence, c is recessive to both c’ and cch allele

4 0
3 years ago
Other questions:
  • A researcher claims that the Makira Island and the Santa Ana Island flycatchers are diverging into different species. Identify T
    15·1 answer
  • 19. What are Darwin's four main ideas of natural selection?
    6·1 answer
  • In general, why might ecologists be concerned when new invasive species arrive in an ecosystem?
    10·1 answer
  • How are mitochondria similar to chloroplasts? Both have many layers of membranes. Both contain molecules of chlorophyll. Both ar
    12·1 answer
  • 2
    6·1 answer
  • How does the structure of DNA determine the structure of RNA?
    9·1 answer
  • Help please will give brainliest to anyone who is good at ​
    13·1 answer
  • What is the allele number for the following sequence? (3pts)
    12·1 answer
  • Question 8
    8·1 answer
  • PLS HELP MEEE WILL MARK BRAINLYEST What has developed as a result of population growth around Cape Canaveral due to the space pr
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!