Fleas bite the skin of dogs, suck their
blood, and cause them to itch. The fleas,
in turn, get food and a warm home. This is
an example of

Answers

Answer 1

Answer:

parasitism

Explanation:


Related Questions

Whats the difference between Asexual and sexual reproduction and how are they similar (5-7 sentences)

Answers

Answer:

Sexual reproduction just means combining genetic material from two parents. Asexual reproduction produces offspring genetically identical to the one parent. They both require reproduction. Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. Sexual reproduction involves two parents and produces offspring that are genetically unique.

Explanation:

What is a future threat of overpopulation?
a) Fewer habitats will be destroyed.
b) Pollution will decrease excessively.
c) Global warming will increase more rapidly.
d) Biodiversity will increase excessively.

Answers

Answer:

C, global warming will increase

Explanation:

Answer:

c) Global warming

Explanation:

I hope this helps

Why do leaves change colour explain?

Answers

Carotenoids are pigments that give leaves their yellow and orange colors. These pigments are always present in leaves, but become more visible as the chlorophyll breaks down in the fall.

Leaves change B due to changes in the pigments that are present in the leaf. Chlorophyll is the pigment primarily responsible for the green color of leaves and is present in all leaves. Chlorophyll is important for the process of photosynthesis, which allows plants to convert light energy into chemical energy. However, as the days get shorter and temperatures cool in the fall, the level of chlorophyll in a leaf decreases and the chlorophyll breaks down. This process causes the green color of leaves to fade, revealing other pigments that have been present in the leaf all along.

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A country has the following population statistics: crude birth rate = 12% crude death rate = 8% immigration = 2.8% emigration = 0.5% What is the growth rate of the population in this country?

A. 6.3
B. -0.7
C. 1.5
D. 1.6

Answers

Answer:A. 6.3 ong

Explanation:

ong

Which of the following is a true statement?

O Balance can be achieved by creating equal visual weight throughout a design, even if the design is not symmetrical
O Balance is achieved only through symmetrical designs.

Answers

I balance can be achieved by creating equal visual weight throughout a design

What offspring is produced if a heterozygous tall pea plant is crossed with a homozygous short pea plant?

Answers

That a Tt heterozygous, giant plant produces T and t gametes with equal probabilities whereas a Tt homozygous, narrow plant exclusively produces t gametes, their offspring 50% tall and 50% short are crossed.

What does the term "heterozygous" mean?

The term "heterozygous" describes the presence of several alleles for a given trait. You have a dominant gene for that gene if the versions differ from one another. Which qualities are expressed depends on how the two genes are related.

What is an example of heterozygotes?

You have a genetic mutation for that gene if the variants differ from one another. For instance, having one gene for red hair but one allele with brown hair could indicate that you are heterogeneous for hair color. Which qualities are expressed depends on how the two alleles are related.

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who gave the concept of vaccine and immunization?​

Answers

The first person to introduce that concept was Edward Jenner

How do I put links in APA style? Pls tell me

Answers

Answer:

Explanation: Citing a Link in the Bibliography APA Style List the author's last name followed by first initial, separated by a comma. If there is more than one author, but less than six, put a comma directly after the first initial and list up to two more names in the same fashion. An "&" symbol should be used in place of a comma before the last name listed.

describe in your own words the cycle of an ecosystem

Answers

Answer:

An ecosystem is where there are many organisms such as plants and animals also including weather and landscape. Ecosystems have biotic and abiotic things . Ecosystems can be very large or very small.

Explanation:

How often do orcas need air?

Answers

Orcas can't even come close to holding their breath for as long. Their maximum duration is approximately 15 minutes, but we typically observe them surfacing for air every 3-5 minutes when traveling or every minute when moving quickly.

The orca, also known as the "killer whale," is the largest member of the dolphin family and is a whale with teeth. These large marine mammals are easy to spot due to their black-and-white coloring, large dorsal fin, and sleek body. On the fluke's undersides, ventral surface, and lower jaw, bright white is the predominant color. The distinctive patterns serve as a method of concealment when they are searching for food.

Whales, like humans, breathe in oxygen through their lungs. However, rather than breathing through their mouths, they breathe through their nostrils, which are the blowholes on top of their heads. They can easily breathe through the blowhole without lifting their entire head out of the water.

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Where can the element carbon be found?
A. Carbon is only found in the atmosphere as part of carbon dioxide.
B. Carbon compounds are found in all living organisms.
C. Most carbon is dissolved in the oceans.

Answers

Answer:

DEFINITELY B!

Carbon is found in EVERY ORGANIC matter! Hope that helps!

how does photosynthesis contribute towards maintaining a clean environment and ensuring food security?​
faster please I will mark you as brainlist for best answers

Answers

Answer:

Well for one photosynthesis gives out oxygen. This makes all animals able to live. So in that way it helps us and the world around us. Without photosynthesis we also could not eat food. No animals could live and no plants ould live. VERY IMPORTANT!

Explanation:

Which one of the following is the major cause of algal bloom?
a. Presence of heavy metals such as lead and copper
b. Eutrophication or nutrient enrichment of water bodies
c. Erosion of soil and rocks
d. Contamination of water bodies by disease-causing microorganisms called pathogens

Answers

Answer:

b option is the correct answer

Eutrophication or nutrient enrichment of water bodies is the major cause of algal bloom (Option b).

Eutrophication refers to the process of nutrient enrichment caused by an excess of primary productivity in water bodies.

This process (eutrophication) is associated with the increase in the concentration of different elements such as phosphorus, nitrogen, and other plant nutrients, which may lead to an abnormal toxic algal bloom.

For example, recently, eutrophication led to a toxic algal bloom that cut off drinking water supplies for approximately 10 million people at Taihu Lake (China).

In conclusion, eutrophication or nutrient enrichment of water bodies is the major cause of algal bloom (Option b).

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There is only 1 major predator in this environment, and it
can only eat the small and medium sized fish. So, the
frequency of the large sized fish would go up in
generation 2. This is an example of
selection.

Answers

Finish the question?

What was the limit on Mann‘s part that prevented him from having a written revelation until the 15th century BC

Answers

It can be concluded that the lack of technology and literacy on the side of man prohibited him from experiencing a written revelation.

The degree of technical progress may have been a barrier on man's behalf that delayed the creation of written revelation until the fourteenth century B.C. People technology probably used oral traditions to pass down their religious and spiritual ideas before the development of writing systems like cuneiform and hieroglyphics. A written language and the ability to preserve knowledge, such the creation of paper or parchment technology, would also have been essential for written revelation to take place. Important to keep in mind is the possibility that diverse cultural, societal, and historical technology factors may have affected how written revelation developed.

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Describe 3 alternative energy technologies and identify two ways that hydrogen gas could be used as a fuel in the future

Answers

Answer:

hope it helps..

Explanation:

In the future, hydrogen will join electricity as an important energy carrier, since it can be made safely from renewable energy sources and is virtually non-polluting. It will also be used as a fuel for 'zero-emissions' vehicles, to heat homes and offices, to produce electricity, and to fuel aircraft.

Which of the following is true concerning the anatomy of a skeletal muscle fiber?
a. actin and myosin sliding past each other and partially overlapping
b. certain smooth muscle cells can actually divide to increase their numbers
c. tropomyosin
d. myofibrils contain thick and thin filaments

Answers

A protein which regulates the activity of the lactose locus is located outside the lac operator and is encroaching, a globular contractile protein, works with myosin to contract muscles.

The single cells are what?

Unicellular creatures are sometimes known as single-cell organisms. In contrast to multicellular creatures, which are made up of many cells, single cell organisms were minuscule and consist of just one cell. They are capable of functioning as a single cell that is capable of sustaining life.

What are some uses for single cells?

Single-cell sequencing technology may identify individual immune cells, making it possible to distinguish between distinct immune cell types and learn about the relationships between them.

This contributes to our understanding of the intricate immune system and suggests new disease-treating targets.

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What is a likely reason why dark fur has not evolved in the population of mice that live on this lava flow?

Answers

The area surrounding the lava is likely very hot in temperature and darker fur retains heat better than lighter fur, so the mice have lighter fur to keep cooler in their home

There could be several reasons why dark fur has not evolved in the population of mice that live on a particular lava flow. One possible reason is that dark fur may not provide any adaptive advantage to these mice in their specific environment.

What is the significance of the dark fur mouse?

In the case of dark fur in mice, there are several factors that could explain why it has not evolved. One possible explanation is that dark fur may be maladaptive in the environment of the lava flow. If the lava flow has a high ambient temperature, dark fur may absorb more heat and cause the mice to overheat, which could be detrimental to their survival. On the other hand, if the lava flow has low light conditions, dark fur may not provide any camouflage advantage and may make the mice more visible to predators.

Hence, one possible reason is that dark fur may not provide any adaptive advantage to these mice in their specific environment.

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The Venn diagram compares aerobic and anaerobic respiration.
which statement could be categorized in the overlapping section of the Venn diagram?
A. uses pyruvic acid
B. has commercial uses
C. regenerates NADH
D. produces 36 ATP

Answers

The Venn diagram compares aerobic and anaerobic respiration. Uses of pyruvic acid could be categorized in the overlapping section of the Venn diagram.

In order to produce energy in the form of ATP molecules, aerobic respiration involves the complete breakdown of a glucose molecule in the presence of oxygen (36 molecules of ATP).

Contrarily, anaerobic respiration entails the partial breakdown of a glucose molecule to produce energy in the form of ATP molecules without the presence of oxygen (2 molecules of ATP).

The use of pyruvate is a characteristic shared by both aerobic and anaerobic respiration (pyruvic acid). The glycolytic process, which is the same for both processes, produces pyruvic acid.

While during anaerobic respiration, pyruvic acid is utilised to manufacture alcohol or lactic acid to renew NAD+, during aerobic respiration, pyruvic acid is used to build acetyl coenzyme A that enters the Krebs cycle.

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Answer:pyruvic acid is used

Explanation:i took it

Which of the following would you expect to have the least effect on hematocrit percentage?
A) prolonged or excessive fever
B) living at higher altitude
C) dehydration
D) injection with erythropoietin (EPO)

Answers

The answer is A. prolonged or excessive fever.

To What Extent Are Calls for Greater Minority Representation in COVID Vaccine Research Ethically Justified

Answers

There are a lot of people out there who have ethical concerns about COVID Vaccines. However, based on opinion polls, it seems that many people also have security concerns. So, it seems that the COVID Vaccine in general is ethical. However, a small number of people who have ethical concerns about the vaccine will still refuse to get it.

Ethical considerations and coverage of COVID-19 payments are quite complicated thought. The public has varying degrees of confidence in the COVID-19 vaccine, possibly due to limited information regarding the type of vaccine, date of availability, and safety profile.

Entering 2021, COVID-19 has been a pandemic for more than a year. So far, most countries in the world have not succeeded in suppressing the spread of the disease. Efforts to make social disclosure have a negative impact on the economy and social welfare. An effective vaccine is the beacon of hope for the world. The COVID-19 vaccine is the first vaccine to be developed in a very short period. The pressure from the world to apply the vaccine is very high.

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what is photosynthesis​

Answers

the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct. Hope this helped!
Photosynthesis

Photosynthesis is a synthesis of compounds with the aid of radiant energy especially in plants.

Radiant energy it transmitted in the form of electronmagnetic radiation; energy that exists in the absence of matter.

Synthesis is the process of producing a chemical compound usually by the union of simpler chemical compounds.

The combination of ideas into a complex whole.

Reasoning from the general to the particular or from cause to effect.

How did Darwin prove his theory of evolution?

Answers

The patterns he had observed during his travels may be explained by Darwin's theory of evolution by natural selection.

In the case of the Galápagos finch species, it made sense that they would resemble one another as well as mainland finches, who most likely had a common ancestor. The best proof that organisms evolved from a common ancestor is similar DNA sequences. The existence of fossils proves evolution. These samples demonstrated how closely related ancient species were to those that existed during Darwin's time. A progression of evolution can be seen in fossils, which also offer compelling proof that species from the past were distinct from those present now.

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What has occurred in the bacterial cell on the right?
A. It was cloned from the cell on the left
B. It contains recombinant DNA and can make a new protein
C. Its plasmid is unchanged
D. The bacterial cell on the right transformed the cell on the left

Answers

Bacterial transformation with a recombinant plasmid. B

an antonym for immerse?

Answers

Answer:

An antonym of immerse is dry.

What information can be deduced from a pedigree? Select the TWO answers that are correct.
a. the probability of a female being a carrier of an X-linked allele
b. how an X-linked trait is passed down over generations
c. the probability of a parent or grandparent being infertile
d.how autosomal traits contribute to X-linked traits
e. the probability that Y-chromosome analysis will prove paternity

Answers

The likelihood that a female will have an X-linked allele. if How a pedigree may be used to infer information.

What kind of attribute has an X-linked ancestry?

Reddish tint blindness with hemophilia A: Ruby color blindness are two examples of Cross recessive diseases. Red-green color blindness is simply the inability to discriminate between the many hues of red and greens (usually blue-green).

Can Y-linked disease impact women?

Y-linked characteristics only appear in male progeny of an afflicted man and never in females. Due to the fact that an only allele (on the Y gene) is ever present in a single (male) person, the terms dominant and recessive need not apply to Y-linked characteristics.

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HURRY I NEED HELP PLEASE ​

Answers

4.) Nitrogen and Carbon Dioxide

In a bird egg the developing embryo is inside the amnion, which contains fluid. The embryo gets nourishment from the yolk. The chorion lines the inside of the shell and helps protect the embryo. What structures in a human provide the same functions as these structures in the bird egg?

Answers

Answer: Placenta

Explanation:

Placenta is the outer protective envelope around the developing embryo. It is attached with the lining of the uterus. It has a permeable membrane which allows the entry of oxygen and nutrients to be supplied to the embryo. It helps in getting rid of harmful substances like carbon dioxide and waste from the developing fetus body.

how deos the structure of water molecule result in the hydrogen bodning ? use evidence from the image below

Answers

The structure of water molecule result in the hydrogen bonding in that:

The structure of a water molecule results in hydrogen bonding due to the distribution of electrons in the molecule. Water molecules are made up of two hydrogen atoms bonded to a single oxygen atom, forming the chemical formula H2O.

What is the hydrogen bonding  about?

The oxygen atom has a higher electronegativity than the hydrogen atoms, which means it is more effective at attracting and holding onto electrons. As a result, the oxygen atom has a partial negative charge and the hydrogen atoms have partial positive charges.

Therefore, a partial positive charges on the hydrogen atoms are attracted to the partial negative charge on the oxygen atom of another water molecule, forming a hydrogen bond. This is a weak chemical bond, but it is significant enough to give water many of its unique properties, such as its high surface tension and ability to act as a solvent.

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Procrastinators will usually ________. a. work on important tasks after valuable time has passed. b. work on tasks that are not priorities c. work on tasks in a haphazard way d. all of the above Please select the best answer from the choices provided A B C D

Answers

Answer:

d

Explanation:

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