A bird flies by moving its wings up and down. Which two systems are most directly responsible for the movement of a bird's wings?
A bird flies by moving its wings up and down. Which two systems are most directly responsible for the movement of a bird's wings?
A.
respiratory and muscular systems
B.
skeletal and digestive systems
C.
respiratory and digestive systems
D.
skeletal and muscular systems

Answers

Answer 1

Answer:

D

Explanation:

skeletal and muscular systems


Related Questions

Which oh these colors has the longest wavelength?

A. Orange
B. Blue
C. Yellow
D. Green


If you see this please tell me the answer as soon as possible

Answers

Answer:

A. Orange

Explanation:

"The visible colors from shortest to longest wavelength are: violet, blue, green, yellow, orange, and red."

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A carrier mother (XHXh) of hemophilia marries a normal father(XHY). *Use allele letter H What are the mothers and fathers genotype?

Answers

Answer: The mother of the man can be either XHXH or XHXh and pass her normal allele to the son and his father can be either XHY or XhY, he only passes his Y chromosome. The mother of the woman can be XHXH or XHXh and the father could be XhY, then she could have inherited the normal allele from the mother and the affected allele from the father. But also, the mother of the woman could be XHXh or XhXh and the father could be XHY, so in this case she could have inherited the normal alele from the father and the affected allele from the mother.

Explanation:

Hemophilia is an inherited bleeding disorder in which the blood does not clot properly. This can cause bleeding either spontaneously or after an injury.

It is related to the X chromosome and it is recessive for females, this mean they need both affected alleles to develop the trait. Males only need one recessive allele because they only have one X chromosome. This means that females need both parents to be at least carriers (although one or both can also have the disease or both recessive alleles). While males inherit it only from the mother, either she is a carrier (one recessive allele) or she has the disease (both recessive alleles). Then the mother passes the X chromosome with the affected allele to the son, and that son only receives the Y chromosome from the father, which does not have the gene that determines this disease.

If the mother is a carrier, her genotype is XHXh, being XH the normal allele and Xh the affected allele. She does not have hemophilia because she has a dominant allele. The father is XHY, so he does not have the disease because his only allele is normal (dominant)

The mother of the man can be either XHXH (she can only pass a normal allele) or XHXh and pass her normal allele to the son (in this case, the recessive allele is not inherited by chance.) His father can be either XHY or XhY, he only passes his Y chromosome which is not related to the disease. The mother of the woman can be XHXH or XHXh and the father could be XhY, then she could have inherited the normal allele from the mother and the affected allele from the father. But also, the mother of the woman could be XHXh or XhXh and the father could be XHY, so in this case she could have inherited the normal alele from the father and the affected allele from the mother.

What is the difference between a guard cell and a white blood cell?​

Answers

Guard cells exist in plants while white blood cells exist in animals’ body.
Blood cells can guard body btw.

Guard cells are found in plants and white blood cells are found in animals.

What are guard cells?Guard cells are specialised plant cells that regulate gas exchange in the epidermis of leaves, stems, and other organs. They are created in pairs, with a stomatal orifice separating them.

What are white blood cells?The immune system's white blood cells, also known as leukocytes or leucocytes, are responsible for defending the body against both infectious diseases and foreign invaders. All white blood cells are created and developed from hematopoietic stem cells, which are multipotent cells found in the bone marrow. All parts of the body, including the blood and lymphatic system, include leukocytes.

Guard cells function to allow gaseous exchange and white blood cells are responsible for the functioning of the immune system.

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(Evolution #2 - 10)All of the following adaptations would help a plant survive in the desert EXCEPT.
Question options:

a)Having deep roots to reach ground water

b) Having a larger central vacuole to help store water

c) Having no leaves to help retain water

d) Having a thicker cell wall to help retain water

Answers

B) having a larger central vacuole to help store water it’s the only one da sounds off

Could anyone put these in order?

Answers

I believe it's D, A, F, C, E, B

When gases trap heat in the atmosphere causing the temperature to rise this is called the greenhouse effect.
A. True

B. False

Answers

Answer:

A. True

Explanation:

Gases trap the heat in the atmosphere causing the temperature to rise, this is called the greenhouse effect.

Outline how a hobby gardener can make and use microclimates.

Answers

Answer: know your common climate effects and how to limit them, i would recommend drawing a map of the area, identify spots of patchy dirt and figure out why, keep tabs on everything you see, pay attention to where everything grows best and everything grows less, try to compare and contrast why, pay attention to snow fall, make sure you’re char king for aspects, topography, exposure, shade, drainage and droughts as well.

Explanation: just did it

A food web is more realistic because a snake
A. has multiple adaptations

B. eats more than just frogs

C. just feeds on birds

Answers

Answer:

B. eats more than just frogs

Explanation:

A food web is more realistic because a snake eats more than just frogs

A food web is more realistic because a snake eats more than just frogs. The correct option is B.

What is a food web?

A food web is a network of interrelated food chains that represents the movement of materials and energy within an ecosystem. In a food chain, the various arrows symbolize the various species that are being consumed by one another and so represent the flow of energy. Additionally, it shows that an animal can eat a variety of foods.

Food chains that are linked together form food webs. In a food chain, arrows point from the organism being eaten to the organism eating it.

The energy flow in a food web is depicted by arrows. Food webs display every form of eating in an environment.

Thus, the correct option is B. eats more than just frogs.

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In a food web, all arrows should point to
A. decomposers

B. consumers

C. producers

Answers

B. consumers because eventually all the energy is consumed by them

Answer:

A. decomposers

Explanation:

In a food web, all arrows should point to decomposers

Which statement best describes evolution in a population? A. It is a change in how common a certain genetic trait of a species is from one generation to the next. B. It is a gene for a trait that helps an individual reproduce more times during its life C. It is a trait that helps an organism survive longer and produce more offspring D. It is a process by which an individual with a helpful trait produces many offspring with the same trait.​

Answers

Answer:

A

Explanation: Because that means that humans reproduct another human as it keeps going on and some people call the people from our past is ancester but it moveing on to a new genaration of kids and then when they grow up the they make more kids that why it is A

Answer:a

Explanation:

from the moment a message is sent to astronauts on the moon it take at least 3 seconds to reply because
Plz help

Answers

Answer:

its D) it takes time for electromagnetic radio waves to get to the moon because of its large distance from earth.

Explanation:

How did Francesco Redi disprove the idea of spontaneous generation?
He showed that flies were not produced by meat.
He showed that microorganisms are present in air.
He showed that microorganisms cause disease.
He showed that flies spread disease.

Answers

Francesco Redi showed that microorganisms are present in air thereby disproving the idea of spontaneous generation and is denoted as option B.

What is Spontaneous generation?

This is supposed production of living organisms from non living substances.

The jar was left open and had maggots in it means the flies laid their eggs which later turned to the maggot which was what Redi observed during the experiment.

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Using an example for each, explain the following ecological concepts.

a) Succession

b) Energy flow between trophic levels

c) Limiting factors

Answers

Answer:

1-Ecological succession is the process of change in the species structure of an ecological community over time.

2-Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level.

3-A limiting factor is a variable of a system that causes a noticeable change in output or another measure of a type of system.

Explanation:

How is secondary succession different from primary succession?

Select one:

Secondary succession occurs after a disturbance in an area that was
previously uninhabited.

Secondary succession occurs when animals are introduced to an area that
had only plants.

Secondary succession occurs after a disturbance in an area in which the soil
has remained intact.

Secondary succession occurs over a longer period of time than primary
succession.

Answers

Answer:

Secondary succession occurs after a disturbance in an area in which the soil

has remained intact.


8. For the food chain shown below, which of the following changes would 2 points
have the most severe consequences? Grasses - Crickets → Field Mice →
Hawks
A minor decrease in rainfall
The field mice population slightly increasing
The introduction of a second predator that eats field mice
0 A parasitic infestation that reduces the cricket population

Answers

Answer:

I think it is A Parasitic one

Explanation:

A decrease in rainfall may lead to drought, thereby altering the basis (first level) of the food web.

A food web is a diagram that represents the relationships between different groups of organisms in an ecosystem.

Producers (e.g., plants) are organisms that maintain the entry of matter and energy to the food web.

Rainfall is fundamental for maintaining the life of land producers (in this case, grasses) in the food web.

In conclusion, a decrease in rainfall may lead to drought, thereby altering the basis (first level) of the food web.

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In class, a student creates an image showing part of the process of protein synthesis.
What occurs in the cell to create the strand of mRNA needed before translation can occur?

Answers

Answer:

Yo the answer is A

Explanation:

Please only respond if you know the answer and links will be reported

Answers

Answer:

Your answer is D. Proteins

Explanation:

Carbon is found in A,B, and C.

An object has less weight on the Moon than it has on Earth. What causes this difference?
a. increased friction
b. the lack of an atmosphere
c. a decrease in gravity
d. the lack of water

Answers

It is c.a decrease of gravity!!

Scientists have observed that new crust, such as mid-ocean ridges, is formed where two plates are moving away from each other. Based on this observation and the data on the maps, where do you suspect that old crust is destroyed and recycled? Provide three specific locations on the map where you think this process is occurring

Answers

Answer:

Old crust is destroyed at boundaries where two plates are moving toward each other, or converging. Specific examples include the Australian and Pacific plates, the Caribbean and Cocos plates, and the southwest corner of the North American plate and the Pacific plate.

Explanation:

How is the sense of touch different from the other senses?

Answers

Answer:

Touch is, in several ways, seemingly different from these other senses, however. For one thing, touch does not seem to have a single sense organ. ... Instead, the skin contains many different sensory systems. Many of them, like those that code for pain and itch, do not seem to be tied directly to the sense of touch.

Explanation:

Touch is often classified as one of the traditional five senses, along with sight, hearing, smell, and taste. Touch is, in several ways, seemingly different from these other senses, however. For one thing, touch does not seem to have a single sense organ. ... Instead, the skin contains many different sensory system

guyss plz help me i will give yall extra pointss

Answers

Answer:

The water is transported to the top most leaves (and rest of its parts) of a tall tree by three actions:

1) root pressure (osmosis)

2) capillary action (adhesion)

3) evapotranspiration (cohesion)

Explanation:

The trees contain a series of interconnected tissues (xylem and phloem) that act as network for transport of water and nutrients throughout the tree. The root pressure and capillary action push the water, while the transpiration from the leaves pull the water. The root pressure is generated by osmotic movement of water from soil to the root tissues. The capillary action is caused due to adhesion of water molecules. However, root pressure and capillarity is thought to support only few meters of water column. The rest of the water transport (esp. in tall trees) is attributed to negative pressure generated by evaporation of water from leaves. This negative pressure creates a vacuum and pulls the water from the roots.

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Consider the attached genetic code chart and the following DNA sequence.

DNA sequence 3' TAC GGG AGT CTT TCC ACT 5'

What would be the mRNA sequence?

What would be the amino acid sequence?

What would occur to the amino acid sequence if the following mutation (G --> C in bold below) were to take place?

DNA sequence 3' TAC GGG ACT CTT TCC ACT 5'

What type of mutation is this?

Answers

Explanation:

TAC GGG AGT CTT TCC ACT -DNA

AUG CCC UCA GAA AGG UGA -mRNA

Met Pro Ser Glu Arg Stop -Amino acid sequence

Can't see the bold :/

Insertion mutation I believe.

A codon chart can be used to read the genetic code. To utilize this chart, start by finding the first codon nucleotide, then the second, and finally the third. The chart will then show which codon codes for the amino acid. Because the genetic code is degenerate, there are several codons for each amino acid.

What role of genetic code in DNA sequence?

The genetic code serves as the body's language for converting the DNA instructions from our genes into the constituent parts of life. It is typically discussed using the “codons” found in mRNA since mRNA is the messenger that transmits information from the DNA to the site of protein production.

Therefore, TAC GGG AGT CTT TCC ACT -DNA

AUG CCC UCA GAA AGG UGA -mRNA

Met Pro Ser Glu Arg Stop -Amino acid sequence

Insertion mutation.

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In the kool aid mixture, what must there be more of, hydrogen ions or hydroxide ions?

Answers

Answer:

hydrogen ions

Explanation:

it is an acid hence why it must contain more hydrogen ions.

PLEASE HELP ME!!!!! I WILL MARK BRAINLIEST!!!!!

Answers

Answer:

the zooplankton would increase

Explanation:

there are not vary many salmon to eat the zooplankton

4

Select the correct answer.

Jonathan is starting to grow facial hair, his voice is deepening, and he's showing other signs of puberty. Which stage of development is he likely

in?

OA.

middle childhood

OB. late childhood

Ос.

adolescence

OD. young adult

Answers

Answer:

Adolescence

Explanation:

(of a young person) in the process of developing from a child into an adult.

Answer:

adolecents are teenagers and teenagers get puberty

Explanation:

What does the S phase of interphase have to do with DNA replication?

Answers

Answer:

The sister chromatids remain joined together until mitosis, when they segregate into two daughter cells.

Explanation: i am sorry if this is wrong

Acid deposition can be wet or dry? True or False

Answers

Answer:

True

Explanation:

Acid rain is a type of acid deposition, which can appear in many forms. Wet deposition is rain, sleet, snow, or fog that has become more acidic than normal. Dry deposition is another form of acid deposition, and this is when gases and dust particles become acidic.

Many people report having a phobia for snakes even though they have never been exposed to a snake. This fear is an example of
A. helplessness to an unfamiliar stimuli B. misinterpretation of stimuli
C. classical conditioning
D. preparedness​

Answers

Answer:

The answer above is correct

Explanation:

Many people report having a phobia for snakes even though they have never been exposed to a snake. This fear is an example of Preparedness. So, the correct option is D.

What is Phobia?

A phobia is defined as an anxiety disorder that is defined by a persistent and extreme fear of an object or situation, usually resulting in a rapid onset of fear and typically present for more than six months. The Phobia develop when a person has an exaggerated or unrealistic sense of danger about a situation or object.

Many people report having a phobia for snakes even though they have never been exposed to a snake which is an example of Preparedness. When multiple phobias develop that result from a negative experience or panic attack related to a specific object or situation.

Therefore, the correct option is D.

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The oxygen and carbon dioxide exchange that occurs during photosynthesis and respiration help to

Answers

release carbohydrates

The oxygen and carbon dioxide exchange that occurs during photosynthesis and respiration aid in the release of carbon dioxide and the utilization of oxygen produced by the photosynthetic process.

What is the significance of respiration and photosynthesis?

The photosynthetic process is the one that can make oxygen as a product, and later that oxygen is used by plants and other animals in the process of respiration, which is essential for life as the cell makes energy in this process. Plants and other chloroplast-containing photosynthetic organisms, such as blue-green algae, phytoplanktons, etc., can produce oxygen, which is then used in respiration to power the cell's activities.

Hence, the oxygen and carbon dioxide exchange that occurs during photosynthesis and respiration aid in the release of carbon dioxide and the utilization of oxygen produced by the photosynthetic process.

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Earth's average temperature typically fluctuates (cycles)
O True
O False

Answers

This answer is true because earth is continually spinning on its axis cause different seasons
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