PLEASE ANSWER ASAP
Which of these are vestigial structures?
O A. the sharp spines of a cactus
O B. the wings of a butterfly
O C. the hip bones found in some species of snake
O D. the thick fur and layer of fat of some mammals in cold climates

Answers

Answer 1

Answer:

C. the hip bones found in some species of snake


Related Questions

What
The differee between Riversible Inhibition and
irrversibel Inhibition ​

Answers

Answer:

Explanation:

Irreversible inhibitors usually react with the enzyme and change it chemically (e.g. via covalent bond formation)

In contrast, reversible inhibitors bind non-covalently and different types of inhibition are produced depending on whether these inhibitors bind to the enzyme, the enzyme-substrate complex, or both.

name the separation method of Akpeteshie

Answers

Answer:

Distillation

Explanation:

Answer:

Distillation is the separation method used for Akpeteshie.


Who determined that gravity was the cause of the motion of planets that Kepler described?

a. Galileo
b. Copernicus
C. Newton
d. Aristotle

Answers

Newton determined that gravity was the cause of motion

Answer:

A-Galileo

Explanation:

I just recently learned this in class. I can’t tell you exactly everything. But I think he wrote a book that put the church and a position they didn’t want to be in. He basically said “Hey you‘re wrong about the theory you told millions of peopl and they believed it “ He wrote a whole book expalingin why and with scientific observations.

How many chromosomes are there in
gametes?
HALF the amount of normal cells
The same amount as all other cells
DOUBLE the amount of normal cells

Answers

Half the amount of normal cells. These are called haploid cells, or gametes. Gametes include sperm and egg. When the egg (23) gets fertilized by a sperm (23), you create your first diploid cell (46) called a zygote. This zygote then undergoes mitosis to become an embryo, and then eventually a baby child. That child continues to undergo mitosis until it has developed into an adult.

Answer:

HALF (23) the number of normal cells (46).

Explanation:

Endangered species are species with decreasing populations that are
sudden loss of habitat
decreased number of natural predators
increased availability of reproductive mates
moving an individual organism into captivity

Answers

Answer: Sudden loss of habitat

Explanation:

Endangered species are animal or plant species that are in danger of going extinct.

This usually results from them suddenly losing their habitat and thus being exposed to unfamiliar conditions or threats that could end their existence. For instance, elephants losing their forest habitats in India and thus encroaching on farmland only to get shot for damaging farms.

Maria and Sam are doing an investigation to see what happens if a vegetable is placed in salt water overnight. The next day, they notice that their sample appeared shrunken because salt water causes cells to lose water. Sam tells Maria that he thinks this is the reason why humans cannot drink salt water. Is he correct? A. Yes, Sam is correct. Animal and plant cells react the same way when exposed to salt water, so it is not safe to drink. B. Yes, Sam is correct. Animal cells can process salt water in small amounts, so it is safe for humans to drink salt water. C. No, Sam is not correct. Plant cells and animal cells act differently when exposed to salt water. D. No, Sam is not correct. Both animal and plant cells are made in the same way, but plant cells can process salt water.

Answers

Answer:

C

Explanation:

because it makes sense

Answer:

A. Yes, Sam is correct. Animal and plant cells react the same way when exposed to salt water, so it is not safe to drink.

                                    Hope This Helps!!!!

What is a nucleosome

Answers

a structural unit of a eukaryotic chromosome, consisting of a length of DNA coiled around a core of histones.

Answer:

A nucleosome is the basic structural unit of DNA packaging in eukaryotes.

Read each scenario determine Whether each person does work.Place each scenario in the correct category
Pls help

Answers

1 no work
2 work
3work

Answer:

Work = Force × Distance

1. No Work since there is no force, no distance.

2. Work since there is force as well as distance.

3. No work since there is only force, no distance.

I’ll mark u as brainliest!

Answers

Answer:

larger and glucose

Explanation:

This biome has a cold harsh climate and short growing season.

A)Temperate Forest
B)Taiga
C)grasslands

Answers

I think the grasslands is the answer not sure tho hope I helped :))

Grassland biome has a cold harsh climate and short growing season.

What is Grassland?

Grasslands can be found in regions with regular rainfall levels that are insufficient for a forest to thrive but not so low that a desert develops. Indeed, meadows are frequently found between deserts and woods. Grasslands cover anywhere from 20 to 40% of the planet's geographical area, depending on how they are characterized.

They exist on every continent, with the exception of Antarctica, and are often open and flat, making them susceptible to pressure from burgeoning human populations.

Agriculture, excessive grazing, invasive species, unreported hunting, and climate change are some of the threats to natural grasslands and the wildlife that inhabits them.

Therefore, Grassland biome has a cold harsh climate and short growing season.

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4. Use your knowledge about the relationship between nutrients and photosynthesis to explain the trends you observed in the data.

Answers

Answer:

The trends go up in the presence of nutrients.

Explanation:

There is a great relationship between nutrients and photosynthesis because photosynthesis can't occur without without the availability of nutrients. Plants uses carbon from the atmosphere which is a nutrient whereas other nutrients such as nitrogen, phosphorus, potassium etc from the soil with the help of the roots. If these nutrients are available in the surrounding, the plant produced more food during photosynthesis because these nutrients are the food of plants so the trends go up in the presence of nutrients and lowers down in the absence or lower concentration of nutrients.

How can new species arise through isolation?

Answers

Answer:

sorta

Explanation:

wit da right ppl it can breed new annimels

Correctly identify and label the structures associated with the branches of the spinal nerve in relation to the spinal cord.

Answers

Answer:

Sorry for the Assholw above me but I think this can help

Explanation:

The spinal nerves consist of 31 symmetrical pairs of nerves that connect the spinal cord to the periphery. There are 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal nerves. The anatomical relationship between the spinal cord, spinal nerves, and autonomic sympathetic ganglia.

What is meant by spinal nerves?A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body. In the human body there are 31 pairs of spinal nerves, one on each side of the vertebral column.

The spinal nerves consist of 31 symmetrical pairs of nerves that connect the spinal cord to the periphery. There are 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal nerves. The anatomical relationship between the spinal cord, spinal nerves, and autonomic sympathetic ganglia.

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The muscle in Lanes arm would best be described as which of the following?An An organ systemsystemAn An organorganAn An organismorganismA A tissue tissue

Answers

Answer:

A tissue

Explanation:

It's not a organism, it's not an organ system because it's not, and it's not an organ so it must be a tissue

(giving brainiest)
brainly will ban you if you answer with a wrong absurd answer or copied answer if the question has over 50 points in it!

Answers

Answer:

Inner planets: Mercury, Venus, Earth, Mars

Outer planets: Jupiter, Saturn, Uranus, Neptune

They all orbit the sun, have a core, are round, and have gravity.

Jupiter vs. Venus: They both have reflective atmospheres. Jupiter is much larger and is a gas planet. Venus is smaller and has a rocky surface.

Explanation:

Hope this helps!

What causes the difference in humidity between Florida and Las Vegas

Answers

Answer:

yep

Explanation:

Little or no humidity is not so true anymore, with the building up and more greenery. Las Vegas the humidly is not at all that low as it once once

The difference in humidity between Florida and Las Vegas is primarily due to their geographic locations and climate patterns.

What causes the difference in humidity between Florida and Las Vegas?

Florida is located in the southeastern United States and is surrounded by water on three sides, with the Atlantic Ocean to the east, the Gulf of Mexico to the west, and the Straits of Florida to the south.

This proximity to water and the warm ocean currents that flow nearby create a humid subtropical climate, characterized by hot summers and mild winters with high levels of humidity throughout the year.

The low humidity in Las Vegas is due to the fact that the dry air has little moisture in it, leading to a lower amount of moisture in the atmosphere. Thus, there is a difference in humidity between Florida and Las Vegas.

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Cellular differentiation progressively restricts cell fate because the unexpressed genes in the cell: Select all that apply. accumulate near the centromeres. are deleted from the genome. become more densely packed with nucleosomes. accumulate point mutations. undergo irreversible repression.

Answers

Answer:

The correct answer is ''undergo irreversible repression.''  

Explanation:

The morphological and physiological transformation of meristematic cells into adult or differentiated tissues constitutes the process of cell differentiation. This, and the consequent specialization of the cell, bring about the division of labor, forming cells with specific functions. Differentiation occurs by differential activation of some genes and repression of others. Depending on the position it occupies, each cell receives certain stimuli to develop the corresponding activities. During the differentiation process, cells undergo a series of changes in their characteristics and there is a readjustment in their mutual relationships.Different molecular factors initiate and drive the programming / reprogramming of cell fate through the modulation of specific genomic and epigenomic patterns, which regulate the expression of activator / repressor genes of the main fundamental and specialized cellular processes. Thus, the differentiated cell will express certain genes and acquire certain functions.Adult stem cells are responsible for maintaining the different types of specialized cells that make up the body. Asymmetric cell division in stem cells has emerged as one of the main physiological mechanisms that regulate the number of cells and their diversity to maintain tissue homeostasis. A large number of molecules, generically called determinants of cell fate, participate in the regulation of asymmetric division. Asymmetric division of somatic stem cells produces both a stem cell and a progenitor. The initial progenitor cells, through new cycles of asymmetric cell division, finally reach their terminal state of cell differentiation, due to changes in intracellular and extracellular (environmental) signaling. After cells leave their mother state and begin to differentiate, they make exclusive selections for phenotypic pathways through secondary genomic / epigenomic modifications, mainly to different types and gradients of transcription factors (physiological programming of cell differentiation). This leads, for example, to activation of specialized biosynthetic pathways, remodeling of the cytoskeleton, and repression of cell proliferation signaling. The expression of genes is regulated mainly at the level of their transcription. Transcription factors correspond to proteins with the ability to interact with specific DNA sequences and trigger their transcriptional activity. Most transcriptional factors contain different domains that participate in different aspects of protein function; they generally contain two domains: a domain that binds to specific DNA sequences and an activation domain that regulates transcription by interacting with other proteins. In the regulation of gene transcription, in addition to transcription factors, coactivating and corepressor molecules participate, which bind to them, modifying their activity in a positive or negative sense. Each cell type has a characteristic pattern of gene transcription, which is determined by the binding of combinations of transcription factors to the regulatory regions of a gene.

Cellular differentiation progressively restricts cell fate because the unexpressed genes in the cell are undergoing irreversible repression.

What does the term gene repression mean?

Gene repression is the switching off of unique genes whose products are needed to support the function of the cell such as the production of vital enzymes or cofactors.

This is specifically important if the products of such genes are not long-lived and deteriorate, or are metabolized.

Thus, option "D" is undergo irreversible repression.

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identify the three basic components of a nervous system and explain how they function to maintain homeostasis

Answers

Answer answer answer

Create a food chain using the following: algae, tadpole, minnow, sun, Blue Heron, alligator. Make sure to include the arrows pointing in the correct direction.

Answers

Answer:

sun-->algae--> tadpole--> minnow-->Blue Heron--> alligator

Explanation:

The food chain for the following is: sun ---> algae ---> tadpole ---> minnow ---> Blue Heron ---> alligator.

What is food chain?"Food chain is the sequence of transfers of matter and energy in the form of food from organism to organism."

The food chain of the given organisms is as follows:

The sun is the ultimate source of energy. In its presence the green plants and algae make their own food.Tadpole is the larva of frog which gets its nutrition from the algae.Minnow are small fishes which eats larva. These are being eaten by blue heron (bird).At last the blue heron gets eaten by alligator.

The interconnection of more than one food chains are called food web.

Hence, the correct sequence is: sun ---> algae ---> tadpole ---> minnow ---> Blue Heron ---> alligator.

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Humans and animals have critical periods. True or False?​

Answers

Answer:

true

Explanation:

The development period of the animals and human beings starts after the birth when a person starts learning and development.

Answer:

False it the correct answer of Oddeyseyware

Explanation:

____cells cannot be replaced when they are damaged.

options:

red blood
nerve

Answers

Answer:

Nerve cells

Explanation:

Nerve cells do not renew themself. Sure, they can be repaired.

In pea plants, round peas are dominant over wrinkled peas. In a cross between a
heterozygous round pea plant and a wrinkled pea plant, what is the phenotypic ratio of
their potential offspring? Use a Punnett square to justify your answer

Answers

Answer:

2:2

Explanation:

2 offspring will be Rr, which is round

2 offspring will be rr, which is wrinked

Therefore, the ratio will be 2:2

According to the Periodic Table,the elements are arranged in order of increasing​

Answers

Atomic number (# of protons)

A research scientist studied the effects of various treatments on the growth of poplar trees. He decided to treat a large sample of saplings with a fertilizer, continual irrigation, irrigation and fertilizer and a control group (non-continual irrigation and no fertilization). He placed one quarter of all saplings into each of the groups and then measured their mass differential after 3 weeks. Did the treatment have an effect on the growth of the trees

Answers

Answer:

hello your question is incomplete attached below is the screenshot of the missing part

answer : The treatment had an effect on the growth of the trees

Explanation:

H0 : No significant effect

Ha : At least one treatment has a significant effect

To confirm the above hypothesis ( conduct one way ANOVA )

From the one way Anova

( X represents each group; from control to Fertilizer and irrigation )

∑ X1^2  = 0.2338 ,  ∑ X2^2 = 1.8284,   ∑X3^2 = 0.1982, ∑X4^2 = 11.8492

Also : ∑ N = 5 + 5 + 5 + 5 = 20  where N = number of  trees in each group

also K represents number of groups i.e. = 4

Next calculate the sum of squares ( calculated using online tools )

i) Between sum of squares:  value = 4.6824

ii) Within sum of squares : value = 4.3572

Next step : Calculate the degrees ( DF)

i) Between degrees of freedom

Dfb = k - 1  where K = 4   therefore Dfb = 3

ii) within degrees of freedom

Dfw = N - k , where N = 20  and K = 4 therefore Dfw = 16  

Next : calculate mean sum of squares

i) Between mean sum of squares

= 4.6824 / 3 = 1.5608

ii) within mean sum of squares  

= 4.3572 / 16 = 0.2723

Calculate the F-statistic value

[tex]F_{calculated }[/tex] = Between mean sum of squares  / within mean sum of squares

= 1.5608 / 0.2723 = 5.73

determine the F critical value

Fcritical = [tex]F_{3,16,0.05}[/tex] = 3.2389  ( obtained from F table )

since [tex]F_{calculated } > F_{critical}[/tex]   hence we can say The treatment had an effect on the growth of the trees i.e. Reject H0

True/False: Cellular respiration just happens to plants because they use photosynthesis.

Answers

False I’m pretty sure
False because plants don’t release anything when photosynthesis is done

When you feel nervous, does that have anything to do with actual nerves? Explain.

Answers

Answer:

No to feel nervous is too feel the sense of feeling scared and has nothing to do with the nerves in your body

For a population to be in Hardy-Weinberg equilibrium, the population must
be small.
not experience migration.
have new mutations.
have nonrandom mating.

Answers

Answer:

The population must be at carrying capacity

Explanation:

Hardy-Weinberg equilibrium has a set of conditions that must be met in order for the population to have unchanging gene pool frequencies. There must be random mating, no mutation, no migration, no natural selection, and a large sample size.

It is not necessary for the population to be at carrying capacity. The population can grow or shrink while maintaining the gene pool.

For a population to be in Hardy-Weinberg equilibrium, the population must not experience migration. Thus, the correct option is B.

What is Hardy-Weinberg equilibrium?

The Hardy-Weinberg principle is also known as the Hardy-Weinberg equilibrium, or law, which states that the allele and also the genotype frequencies in a population will remain constant from one generation to next generation in the absence of other evolutionary influences, as well.

There are five basic Hardy-Weinberg assumptions no mutation, random mating, no gene flow, infinite population size, and no selection.

For a population to be in Hardy-Weinberg equilibrium, the population must not experience migration.

Therefore, the correct option is B.

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PLEASE HELP FAST
Which of the following are carbohydrates?

Select all that apply.

fats
glycogen
starches
sugars

Answers

Answer:

fats, starches, sugars

Carbohydrates are fats, starch, and sugars. Thus, option A, C, and D are correct.

What are Carbohydrates?

Carbohydrates is defied as that contains biomolecule that contains carbon hydrogen and oxygen in a ratio of 2:1.

Carbohydrates are mane source of energy of the body they work as fuel for the brain, kidneys central nervous system and heart muscle.

Cn(H2O)n is the basic formula for all carbohydrates . But this formula have limitation i.e it applies where same amount of carbon and water are use.

Initially the terms carbohydrate was used to describe compounds that have really contains carbohydrates because they had simple formula CH20.

In modern era carbohydrates are classified on the basis of their structure not on their formulae. Such as aldehydes and ketones are now known as polyhydroxy.

Therefore,carbohydrates are fats, starch, and sugars. Thus, option A, C, and D are correct.

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What is the connection between the Igneous rock In the picture of the volcano and the black sand beach? What are some steps n the process?

Answers

Answer:

There isn't a picture, but the black sand beach was created because of volcanoes. These beaches for over a long amount of time by erosion of volcanic minerals and lava. This is combined with the ebb and ocean waves.

Help me out pls and thanks omgggg

Answers

Answer:

answer is A good luck on you're quiz

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