Nancy visits a local reservoir where she feeds ducks and other birds. Every time she feeds them she notices that they fight for the best pieces and some do not get any. All living things struggle to get the necessary amount of food, water, and shelter. What is the term for this struggle? * A. overproduction B. natural selection C. variation D. Competition ​

Answers

Answer 1

Answer:

D. Competition

Explanation:

Hope u guys have great day. ✌❤

Answer 2

Competition is defined as a biological interaction between or among the same or different organisms where organisms fight for resources. Competition explains this struggle. So, the correct option is D.

What is Competition?

Competition is defined as an interaction between organisms or species in which both require a resource in limited supply that reduces the fitness of both organisms because the presence of one of the organisms will always limit the resource available to the other that reduces the quantity.

Competition is defined as a biological interaction between or among the same or different organisms where organisms fight for resources. Competition explains this struggle. Some example of competition is trees in the forest grow tall to compete for sunlight.

So, the correct option is D.

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Related Questions

How can we tell histologically that skeletal muscle tissue is highly vascular?

Answers

Answer:Muscle tissue is composed of cells specialized for contraction. Muscle is classified into three types according to their structure and function:

Skeletal muscle cells - striated, voluntary control

Cardiac muscle cells - striated, involuntary control

Smooth muscle cells - nonstriated, involuntary control

Skeletal and cardiac muscle cells are called striated because they show an alternating series of bands. The repeating arrangement of their basic contractile unit, the sacromere, produces these striations.

In all types of muscle, contraction is caused by the movement of myosin filaments along actin filaments.

The terms muscle cell and muscle fiber are synonymous.

Explanation:

Cognition is studied indirectly. Please select the best answer from the choices provided T F

Answers

Pretty sure it’s True.. but I could be wrong

The statement "Cognition is studied indirectly" is true.

What is cognition?

The mental action or process of obtaining psychological features and apprehension through self-satisfaction, experience, and the senses is the definition of cognition.

Cognitive psychologists are interested in the investigation of mental functions. This relates to the study of cognition, memory, learning, and problem-solving processes in people. Cognitive psychologists are interested in how people think or react psychologically to various situations.

On the other side, behavioral psychologists are interested in researching and observing behavior. It is additional research on the interactions between stimulants and outcomes.

Therefore, the statement is true about cognition.

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A student is presented with a model of a digestive system and is asked to remove one structure (small or large organ) that will have the largest impact on decreasing chemical digestion. Which structure should the student remove

Answers

Answer:

Small intestine

Explanation:

Digestion is the process of breaking down food molecules into simpler and usable forms by the body cells. The process of digestion involved the mechanical aspect and chemical aspect. The mechanical one deals with using physical means like chewing to break down the food particles.

However, the chemical one deals with the usage of chemically-secreted enzymes to work on the food molecules. Lots of digestive organs are involved in this chemical digestion, but, the most of chemical digestion takes place in the SMALL INTESTINE. The small intestine is where most of the chemical digestion occurs including absorption.

Hence, according to this question, the student should remove the SMALL INTESTINE because it will have the largest impact on decreasing chemical digestion.

CAN SOMEONE PLEASE HELP ME WITH THIS PLEASE I WANT TO PASS!!!

Answers

Answer:

true

Explanation:

Answer:

its true if they do not move locations so that answer is kinda tricky id choose true tho

What products of the Calvin Cycle are used by the light reactions?

Answers

Answer:

ATP and NADPH

Explanation:

The Calvin cycle uses the reducing powers ATP and NADPH from the light dependent reactions to produce sugars for the plant to use.


How does the Digestive system help to maintain


A. Allow organisms to pass on life

B. Act as structure and support for the body

C. Break down food a form our cells can use and absorb

Answers

Answer:

C.

Explanation:

The digestive system allows our body to break down the foods we eat, so that we can get the nutrients from it!

Hope this helps!!

The answer is C.


The digestive system is a series of organs that convert food into essential nutrients, and moves unwanted waste out.


hopes this helps,, have a great day :))

3. Autotrophs that convert light energy into chemical energy is called
a. photoautotrophs
b. heterotrophs
c. chemoautotrophs
d. omnivores

Answers

Answer:

A) Photoautotrophs

Explanation:

Tbh Im not entirely sure but photo means light and it seems like the most likely answer

Two genes are hypothesized to be linked. The map distance between the genes is thought to be 12 map units. Out of 1000 offspring produced by two heterozygous parents, predict how many would occur in each phenotypic category.

Answers

Answer:

Approximately the number of individuals with each phenotype is:

RS-->0.75 x 1000 = 750rs--> 0.19 x 1000 = 190Rs--> 0.05 x 1000 = 50rS--> 0.05 x 1000 = 50

Explanation:

Available data:

Two genes are hypothesized to be linkedThe map distance between the genes is thought to be 12 map units. Two heterozygous parents1000 offspring produced

Let us say that the two diallelic genes are R (alleles R and r) and S (alleles S and s)

Heterozygous parents might have the following genotype RS / rs  

We know that there are 12mp between genes, which means that the recombination frequency equals 0.12 or 12%.

0.12 of the gametes are recombinants and 0.88 are parentals. There are two types of parentals and two types of recombinant, so 0.06 + 0.06 are recombinants while 0.44 + 0.44 are parentals. This is:

Cross:

Parentals)      RS/rs     x     RS/rs

Gametes)    RS (parental) 0.44

                   rs (parental) 0.44

                   Rs (Recombinant) 0.06

                   rS (Recombinant) 0.06

Punnet square)         RS           rs             Rs             rS

                      RS    RS/RS      RS/rs      RS/Rs        RS/rS

                      rs      RS/rs       rs/rs       Rs/rs          rS/rs

                      Rs     RS/Rs      rs/Rs       Rs/Rs        rS/Rs

                      rS     RS/rS        rs/rS       Rs/rS          rS/rS

F1) Genotypes:

1 RS/RS --> 0.44x 0.44 = 0.1936 2 RS/rs --> 0.44x 0.44 = 0.1936 x2 = 0.38722 RS/Rs --> 0.44 x 0.06 = 0.264 x 2 = 0.0532 RS/rS --> 0.44 x 0.06 = 0.264 x 2 = 0.0531 rs/rs --> 0.44x 0.44 = 0.1936 2 rs/Rs --> 0.44 x 0.06 = 0.264 x 2 = 0.0532 rS/rs --> 0.44 x 0.06 = 0.264 x 2 = 0.0531 rS/rS --> 0.06 x 0.06 = 0.00361  Rs/Rs --> 0.06 x 0.06 = 0.00362  Rs/rS --> 0.06 x 0.06 = 0.0036 x 2 = 0.0072

Phenotypes:

RS-->0.7506 (RS/RS +  RS/rs + RS/Rs + RS/rS + Rs/rS)rs--> 0.1936 (rs/rs)Rs--> 0.0566 (rs/Rs + Rs/Rs)rS--> 0.0566 (rS/rS + rS/rs)

Now, to know how many individuals would occur in each phenotypic category, you just need to multiply it by 1000, that is the total number of individuals

RS-->0.75 x 1000 = 750rs--> 0.19 x 1000 = 190Rs--> 0.05 x 1000 = 50rS--> 0.05 x 1000 = 50

Predict one possible problem with a DNA molecules' structure that could occur.

Answers

Answer: DNA damage due to environmental factors

Explanation:

DNA is a genetic material present in the cell of living organisms. The DNA can be damaged by the environmental factors which can induce mutations in the structure of the DNA further affecting the function. The environmental factors like ultraviolet rays, chemicals, ionizing radiation can damage the structure of the DNA. For example, the chemical may contain alkylating agents which can cause the hydrolysis of the chemical bonds in the DNA.


A group of two or more organs that work together to perform a specific function.

A. Cell
B. Tissue
C. Organ System

Answers

C. Organ System


Like said in the definition above, an organ system is a group of organs working together to perform a specific function for the organism.



hope this helps !! have a great day :))

What are the different types of Adaptations? Give examples of each.
Give an example for natural selection occurring based on food sources

Answers

Answer:

Behavioural-made by an organism that helps it to survive/reproduce.

Physiological-a body process that helps an organism to survive/reproduce.

Structural -a feature of an organism's body that helps it to survive/reproduce

Explanation:

Which worm sometimes uses specialized tentacles to exchange gas and capture food?

a fluke
a planarian
an earthworm
a marine worm

Answers

A marine worm !!!!!

Answer:

marine worms

Explanation:

What determines the genetic code you had when you were born?

Answers

Answer:

Explanation:

your biological parent's gene

Buildings built to remain standing during an earthquake are said to be
earthquake proof.
Type here to search
BH
Desktop
1:33 AM
1/15/2021
True or false

Answers

Answer:

True.

Explanation:

Earthquake proof buildings are those which have the ability to stand during an earthquake. Shock absorbers that is present between the building and the ground motion, able the building to remain upright during an earthquake. The shock absorbers has the ability to absorb all the disturbance produced in the building and for that purpose the building is safe.

What are some methods that predators use to capture prey?

Answers

Some use Camouflage or Scent

Answer:

Offensive Strategies of Predators

Cheetahs use speed to outrun their prey, and eagles, hawks, owls and falcons use flight to their advantage while hunting. Venomous snakes, spiders and wasps use poisons to either kill or immobilize their prey. Some predators even use mimicry to capture prey.

What is the average body temperature of humans?

A. 25°C
B. 43°C
C. 37°C​

Answers

Answer:

Explanation:

C

Answer:

It is 37 degree C

I normal cases

A. Structure that organizes motion of chromosomes.

Answers

Answer:

lol NO I MENA CENTROILE

Explanation:

The answer is centriole

if a 900 newton tv is moved 3m in 60 seconds. how much power used urgent plzzzz

Answers

First solve for Work done:
W=Fd. Work is force times distance

W= 900 Newton’s x 3 meters
or 2700 joules (Newton meters)

Then can solve for power:
P=w/t. Work over time (time in seconds)

2700joules/60 seconds.

Power= 45 watts

Cross two heterozygous black mice and tell the possible phenotypes and
genotypes in their offspring.

Answers

Answer:

The correct answer is -

Phenotype: 3:1 (dominant black mice: recessive brown allele)

genotype: 1:2:1 (purebred dominant : heterozygous: purebred recessive)

Explanation:

In the given question there is a cross that takes place between two heterozygous black mice. LEt assumes B is black which is the dominant allele and b is the recessive allele or brown. As it is given in heterozygous condition black mice are present which means the B is dominant over b.

Now cross:

Gametes: B and b for each mice

      B        b

B     BB      Bb

b    Bb       bb

By the cross, there are two phenotypic offspring that produce 3 black mice out of four and 1 brown or recessive allele out of four

And, genotypically three offspring in the ratio of 1:2:1 (purebred dominant : heterozygous: purebred recessive)

name any four main nitrogenous excretory products

Answers

Answer:

Any 4 main nitrogenous excretory products are as follows:

Explanation:

Carbon dioxide Uric acidUreaammonia, etc.

Answer:

Explanation:

In animals, the main excretory products are carbon dioxide, ammonia (in ammoniotelics), urea (in ureotelics), uric acid (in uricotelics), guanine (in Arachnida) and creatine.

A young man recently learned from a genetics doctor that he had a condition called Friedreich's ataxia. This syndrome affects the arms and the legs with the person usually needing a wheel chair. Neither of his parents have this disorder. However the young man's grandfather was wheelchair bound, but didn't know why because genetic information was very limited when his grandfather grew up. Based on this information, what type of inheritance does Friedreich's ataxia follow? Explain why. What are the genotypes of each of the individuals mentioned in this question? Create a pedigree chart to support your answer.​

Answers

Answer: Friedreich ataxia is a genetic condition that affects the nervous system and causes movement problems. People with this condition develop impaired muscle coordination (ataxia) that worsens over time. Other features of this condition include the gradual loss of strength and sensation in the arms and legs; muscle stiffness (spasticity); and impaired speech, hearing, and vision. Individuals with Friedreich ataxia often have a form of heart disease called hypertrophic cardiomyopathy, which enlarges and weakens the heart muscle and can be life-threatening. Some affected individuals develop diabetes or an abnormal curvature of the spine (scoliosis).

Most people with Friedreich ataxia begin to experience the signs and symptoms of the disorder between ages 5 and 15. Poor coordination and balance are often the first noticeable features. Affected individuals typically require the use of a wheelchair about 10 years after signs and symptoms appear.

About 25 percent of people with Friedreich ataxia have an atypical form in which signs and symptoms begin after age 25. Affected individuals who develop Friedreich ataxia between ages 26 and 39 are considered to have late-onset Friedreich ataxia (LOFA). When the signs and symptoms begin after age 40 the condition is called very late-onset Friedreich ataxia (VLOFA). LOFA and VLOFA usually progress more slowly than typical Friedreich ataxia.

The genotype of the grandfather and the young man is ff (f allele for  Friedreich's ataxia) The genotype of the father and the mother is Ff.

What is a genotype?

A genotype is a classification of the type of variant found at a certain position (i.e., a locus) in the genome. Symbols can be used to symbolize it.

Friedreich ataxia is a hereditary disorder that causes movement issues by affecting the neurological system. This disorder causes decreased muscular coordination (ataxia), which worsens over time.

Individuals with Friedreich ataxia frequently have hypertrophic cardiomyopathy, a type of cardiac disease that enlarges and weakens the heart muscle and can be fatal. Some people who are impacted have diabetes or an irregular spine curvature (scoliosis).

Therefore, the genotype of the grandfather and the young man is ff (f allele for Friedreich's ataxia) The genotype of the father and the mother is Ff.

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How does the carbon locked in shells of marine organisms move back to the atmosphere?

A through subduction of deposits and volcanism

B through the process of respiration in these organisms

C through death and decomposition

D through the microbial process of ammonification

E through chemical reactions in acidifying oceans

Answers

Carbon locked in shells of marine organisms moves back to the atmosphere through death and decomposition of those organisms.

What is the carbon cycle?

The carbon cycle refers to the movement of carbon through the biogeochemical cycle. The carbon cycle cuts across;

The lithosphereThe hydrosphereThe atmosphere

Carbon locked in shells of marine organisms moves back to the atmosphere through death and decomposition of those organisms.

Learn more about the carbon cycle: https://brainly.com/question/15290121

An accidental change in DNA is a
Mutation or Speciation

Answers

Answer:

the answer is mutation I think

Where is the albedo effect the greatest?

a. Africa

b. Australia

c. Europe

d. Antarctica

Answers

D is your answer D: Antarctica
Answer:
A. Africa


Step-by-step explanation:

Here on Earth, the albedo effect has a significant impact on our climate. The lower the albedo, the more radiation from the Sun that gets absorbed by the planet, and temperatures will rise. If the albedo is higher, and the Earth is more reflective, more of the radiation is returned to space, and the planet cools.

name a fish which possesses a poisonous sting.....
who one answer this question I'll give her or him answer as brainlist answer it's my promise
but u have to answer it in 20 seconds​

Answers

Answer: Scorpionfish

Explanation:

The marine fish of the family Scorpaenidae are the most venomous fish in the world. Three main genera provoke the majority of envenomations in humans: Synanceja (stonefish) (Fig. 36-50), Pterois (lionfish) and Scorpaena (true scorpionfish) (Fig.

Which of the following is NOT part of the cell theory?

A : All life functions are carried on by cells

B: All cells come from cells that are already alive

C : All cells must breath air

D: All organisms are made up of cells

Answers

Answer:

C. Because that we had to go over that. That's so easy

6. How will you describe the change in energy of water molecules when
its boiling?

Answers

You can describe the change in the water molecules because they will start circling and creating conviction

(I think sorry I’m not that smart)

Mountains, volcanoes, and earthquakes may occur when one plate-
A pushes apart
B erodes
C breaks open
D pushes against another plate​

Answers

Answer: d

Explanation:

D trust me

Which two planets have that most closely resemble this comparison?

Answers

Explanation:

Kepler-452b

Kepler-452b (a planet sometimes quoted to be an Earth 2.0 or Earth's Cousin based on its characteristics; also known by its Kepler Object of Interest designation KOI-7016.01) is an exoplanet orbiting the Sun-like star Kepler-452 about 1,402 light-years (430 pc) from Earth in the constellation Cygnus

Venus and Mars, I believe

Which of the following is true of ecological succession? A-pioneer organisms move into new communities first. B-primary productivity decreases as succession proceeds. C-secondary succession takes place within new communities with no previous soil. D-all of the above.

Answers

Answer:  Pioneer organisms move into new communities first.

Explanation:

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