The arrows in the picture below show several ways heat is transferred from the Sun as it strikes sand on the surface of a beach. Which arrow shows convection?

A.
1

B.
2

C.
3

D.
4

Answer:

hi

Explanation:

i think they can't.But they can regrow their arms

have a nice day

Answer:

In the past, scientists were concerned with mass-producing for local areas, not for large areas.

Explanation:

Today agriculture is made on a more global scale

☁️ Answer ☁️

1: "Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules."

2: "The energy stored in the bonds to hold these molecules together is released when an organism breaks down food. Cells then use this energy to perform work, such as movement. "

-GoogIe

(And I love your pfp)

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Have a nice day noona/hyung.

Answer:

Hope this helps!

Answer:

False

Explanation:

The correct answer is osmosis

Answer:

false

Explanation:

Answer: surface winds

If tRNA does not bring back the appropriate amino acids, the protein may fold incorrectly. so, the blank is tRNA.

The type of RNA that helps in the synthesis of proteins from mRNA, called as tRNA. tRNA acts as an adapter molecule during the translation process, and as an adapter, it connects amino acids to nucleic acids. It carries the amino acids that are added to the peptide chain and decodes the same codons in the mRNA molecule.  

The structure of tRNA can be separated into primary, secondary and tertiary structures. The structure tRNA has four arms (the acceptor, D, anti-codon and -arms), three loops (D, anti-codon and -loop) and a variable region.

It binds amino acids to specific codons present in the mRNA, by acting as an adapter. Therefore, If tRNA bring wrong amino acid to ribosome for assembly of protein, protein may fold incorrectly.

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Answer:

im pretty sure its B

Explanation:

Answer:

it think it is the marker gene it said that online for me I dont know

if that even is a gene

Answer:

yes

Explanation:

Answer:

1) The word ‘evolution’ was first mentioned in the book ‘The Origin of Species’ in 1859, by Charles Darwin. Darwin put forward the concept of evolution during his journey to the Galapagos Islands. 

2)Natural selection is an important mechanism of evolution. It states that the organisms that are able to survive and reproduce with the changing environmental conditions are selected by nature while the ones that cannot survive are eliminated.

3) Evolution mainly deals with the origin of life on earth. The conditions and the forms of life on earth were entirely different from what we see today.

please forgive me I cant answer 4th one..

5)Charles Darwin, an English naturalist of the 19th century made an extensive study of nature for over 20 years. 

1. The fossil record provides crucial evidence for biological evolution. Fossils are the preserved remains or traces of past organisms, providing a record of life on Earth over millions of years.

By studying fossils, scientists can observe changes in organisms and their characteristics over time. Fossils show a progression of simpler life forms in older layers to more complex ones in more recent layers.

2. Natural selection is a mechanism for biological change because it leads to the adaptation of populations to their environments over time. It is based on the concept that individuals within a population exhibit variation in traits, and those traits that enhance survival and reproduction are more likely to be passed on to future generations.

Through natural selection, individuals with advantageous traits have higher chances of surviving and reproducing, leading to the increased frequency of those traits in subsequent generations.

3. Chemical evolution, also known as abiogenesis or prebiotic evolution, explains the origin of life on Earth by proposing that life arose from non-living matter through a series of chemical reactions.

According to this theory, in Earth's early conditions, simple organic molecules formed from inorganic compounds through processes like lightning, volcanic activity, and reactions in the atmosphere and oceans.

These molecules then underwent further reactions, leading to the formation of more complex molecules like amino acids and nucleotides, which are the building blocks of proteins and nucleic acids, respectively.

4. Scientific theories such as biological and chemical evolution represent the strongest explanations for the changes observed in the fossil record because they are supported by extensive evidence from multiple scientific disciplines.

These theories have withstood rigorous testing, scrutiny, and peer review over many years. They are based on a large body of evidence, including the fossil record, comparative anatomy, genetics, molecular biology, and observations of natural populations.

5. Scientific theories on evolution and the fossil record can change over time as new evidence is discovered, technologies advance, and scientific understanding improves.

The process of scientific inquiry involves continuous investigation, testing, and refinement of theories based on new data and observations.

As scientists gather more evidence from fossil discoveries, genetic studies, experimental research, and other fields, our understanding of evolution and the fossil record can deepen and evolve.

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C. Carbohydrates

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Answer: The genotype of an organism is defined as the sum of all its genes. The phenotype of an organism is the observable physical or biochemical characteristics of an organism, determined by both genetic make-up and environmental influences.

Explanation:

Answer:

Planets that are farther tend to have gas surfaces, a bigger diameter, and more moons. Planets closer to the sun have the opposite.

Answer:

A

Explanation:

Answer:

A

Explanation:

Answer:Both Mitosis and meiosis

Explanation:

Cell face both conditions for the development of new offspring

Answer:

Following are the roles of the digestive, excretory and endocrine systems in terms of homeostasis:

Explanation:

Role of Endocrine System:

The endocrine system mediates all the chemical signaling in the body.

Hormones are chemical messengers that the endocrine system uses to maintain chemical homeostasis.

Endocrine system manages glucoregulation by controlling the secretion of the hormones glucagon and insulin by the pancreas. Low and high blood sugar levels are sensed by the brain which then signals the endocrine system to release glucagon and insulin respectively.

The endocrine system is also indirectly involved in thermoregulation. A low core temperature signal received by the hypothalamus initiates the release of TSH by the pituitary gland and then that of T3, T4 thyroid hormones that stimulate shivering thermogenesis in the skeletal muscles.

Role of Digestive System:

The digestive system regulates the amount of nutrients absorbed in the body.

Although the absorption of nutrients in food is not exactly according to bodily needs, the absorption of dietary iron and calcium is strictly regulated by the digestive system.

Role of Excretory System:

The excretory system carries out osmoregulation which is the maintenance and regulation of water and salt levels in the blood.

The excretory system regulates the excretion of toxic waste from the blood.

Excess water, salts, urea and bilirubin (produced as a result of RBC break down) are some of the excretions.

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Answer:

Following are the roles of the digestive, excretory and endocrine systems in terms of homeostasis:

The endocrine system regulates the secretion of various hormones and homeostatic mechanisms in response to signals of the hypothalamus and pituitary glands.

The excretory system maintains homeostasis by purifying the blood and getting rid of toxic waste from the blood.

The digestive system is mainly involved in the transfer and regulation of nutrients from food.

Explanation:

Role of Endocrine System:

The endocrine system mediates all the chemical signaling in the body.

Hormones are chemical messengers that the endocrine system uses to maintain chemical homeostasis.

Endocrine system manages glucoregulation by controlling the secretion of the hormones glucagon and insulin by the pancreas. Low and high blood sugar levels are sensed by the brain which then signals the endocrine system to release glucagon and insulin respectively.

The endocrine system is also indirectly involved in thermoregulation. A low core temperature signal received by the hypothalamus initiates the release of TSH by the pituitary gland and then that of T3, T4 thyroid hormones that stimulate shivering thermogenesis in the skeletal muscles.

Role of Digestive System:

The digestive system regulates the amount of nutrients absorbed in the body.

Although the absorption of nutrients in food is not exactly according to bodily needs, the absorption of dietary iron and calcium is strictly regulated by the digestive system.

Role of Excretory System:

The excretory system carries out osmoregulation which is the maintenance and regulation of water and salt levels in the blood.

The excretory system regulates the excretion of toxic waste from the blood.

Excess water, salts, urea and bilirubin (produced as a result of RBC break down) are some of the excretions.

Answer:

Limiting factors fall into two broad categories: density-dependent factors and density-independent factors. These names mean just what they say: Density-independent factors have an impact on the population, whether the population is large or small, growing or shrinking.

the density-dependent factor example is:

Density-dependent factor, also called regulating factor, in ecology, any force that affects the size of a population of living things in response to the density of the population (the number of individuals per unit area).

the independent factors example is:

Pollution. Like other density independent factors, pollution is a good example of a density independence.

Explanation:

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Although it is possible to have more than one state, it is also possible to have only one state.Explanation:

Answer:

Sorry I really just needed the points   ;(

Explanation:

Answer:

1) Amplitude of wave A: 0.5 meters

2) You would have to find the wavelength with the equation λ = [tex]\frac{v}{f}[/tex]

Explanation:

1) Amplitude of a wave is the height of the wave from the horizontal line drawn on "0" to the highest point on the wave.

2) λ is lambda, sign for the wavelength. V is the velocity of the wave, and F is the frequency of the wave.

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Answer:

the annswer is b

Explanation:

just look at the questin and then see wicth one you can cross off

The three fundamental laws of classical mechanics known as Newton's laws of motion describe how an object's motion and the forces acting on it interact. The materials is more suitable as a liner for a safety helmet exists B.

The three fundamental laws of classical mechanics known as Newton's laws of motion describe how an object's motion and the forces acting on it interact. The following is a paraphrasing of these laws: Unless a force acts upon a body, it remains at rest or in continual straight-line motion. First Law of Motion of Newton Unless influenced by an imbalanced force, an item at rest stays at rest, and an object in motion keeps moving in a straight path at a constant pace.

According to the first law, unless a force acts on an object, it will not alter its motion. According to the second law, an object's force is determined by multiplying its mass by its acceleration. According to the third law, when two objects interact, they exert equal-sized and opposite-direction forces upon one another.

The materials is more suitable as a liner for a safety helmet exists B.

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Answer:

Earth's Surface rise and climate. You are basically looking at the weather and the condition of the atmosphere.

Explanation:

When the average temperature at the Earth's surface rise, evaporation occurs more which causes precipitation to also occur more.

Answer:blue

Explanations :

Answer:

1. The anther produces the pollen grains that contain the sperm needed for fertilization

2.Petals attract the pollinators.

3.Stamens are the male reproductive organ

4.The main function of the stamen is to produce the pollen grains, which house male gametes , necessary for reproduction.

5.The stamen is made up of two parts: the anther and filament. The anther produces pollen (male reproductive cells). The filament holds the anther up.

6.A stamen consists of an anther (which produces pollen, the male reproductive cell) and a filament.

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Answer:

1. the anther

2. showy petals and sepals, nectar guides, shape, size, and color.

3. stamen

4. The pollen-producing part of a flower, usually with a slender filament supporting the anther.

5. the anther and filament

6. anther, filament, pollen

Explanation: