The surface area of a sphere can be approximated as follows: Surface area = 4πr2; where r is the radius of the sphere; π is a constant that is roughly equal to 3.Using the simple approximation above, calculate the surface area of a sphere with a radius of 2 meters. A 16 m2 B 9 m2 C24 m2 D 48 m2

The answer is C i belive

The anglerfish will exhibit healthy health rating.  

The anglerfish refers to a bony fish named after its featured mode of predation. The species of the fish occur globally, most of the anglerfish are benthic, that is, they dwell close to the floor of the sea. At the depth of deep-sea, the pressure is very high, however, various creatures exhibit no issue living there.  

In the absence of gas-filled spaces like swim bladder or lungs, the species in the great deep sea are less influenced by the pressure than one can think. Though the species adapted to such pressure conditions, when being brought to the surface of the sea may encounter with certain metabolic issues. Thus, increasing the pressure will cause no harm to the health of anglerfish.  

The correct answer is option (B) It supports the anti-drilling argument.

Deepwater drilling refers to the process of drilling holes in the deep sea, below the seabeds for the purpose of mining petroleum compounds. Deepwater horizon blowout was an explosion causing a huge oil offshore oilspill in the Gulf of Mexico, making it the largest accidental marine oil spill  disaster in the world. It has a numerous negative effects on the marine life.

The toxic oil and its compounds released into the water during the deepwater horizon blowout has contaminated the water and affected the marine life including the phytoplanktons, zooplanktons, invertebrates, fishes and other mammals of the sea. Highly toxic chemical components such as benzene and polycyclic aromatic compounds have even caused DNA damage and mutations in the marine life. Apart from their mortality, it has also been responsible for reduced growth, diseases, impaired reproduction in the sea fauna. Thus, ingestion of such contaminated seafood grown in contaminated water can be held responsible for the rise in cancer rates. Thereby supporting the anti-drilling arguement.

Answer: It supports the anti-drilling argument

Explanation: Please Mark Brainiest :)

B. control the cell cycle

Kinases and cyclins are internal factors that regulate the cell cycle by ensuring that cells progress through the necessary stages of cell growth and division at the proper times.

Kinases and cyclins are internal factors that work in symbiosis to control the cell cycle. Their primary function is to ensure that cells progress through the necessary stages of the cell cycle at the proper times, thus regulating cell growth and division. Specifically, cyclins are a group of proteins that are produced in cells during various stages of the cell cycle. Their levels rise and fall regularly, linked with the progression of the cell cycle. Kinases are enzymes that transfer phosphate groups from ATP to proteins in a process called phosphorylation. This process aids in the regulation of the cell cycle. Together, the cyclin-dependent kinases (CDKs) and cyclins form a complex that helps orchestrate cell division.

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the correct answer is missense mutation

The matching process has connected each scientific term with their appropriate definitions. For example, an autotroph can make its own food, a eukaryote is a cell with a nucleus, and microbiology studies microscopic organisms.

The terms and their corresponding definitions based on your presented list are as such:

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The complete question is given below:

Match the following terms and definitions.

Part A:

1. an organism that can make its own food  

2. a symbiotic relationship between two organisms in which one species benefits and no effect is apparent to the other species

3. a cell that has a membrane-bound nucleus and/or organelles as its major characteristic

4. the study of organisms that are too small to be seen with the n_aked eye

5. a disease-causing organism; a germ

6. a one- or few-celled organism with chromosomes; may have characteristics of both animals and plants

Part B:

a. eukaryote  

b. protist

c. autotroph

d. pathogen

e. microbiology

f. commensalism

Answer:

Answer:

B. Erosion and D. Index fossils are geologic features that help scientists to determine relative ages of rocks by their positions.

Explanation:

The relative ages of rocks is calculated by comparing them to the ages of other ones.  It involves methods namely intrusions, index fossils and cross-cutting relationship.

Relative age is determined by comparison of the rock with other rocks. It can be determined by the position of the rock.

There are two ways to determine rock age, these are relative dating and absolute dating.

This involves cross-cutting relationships, intrusions and index fossils.

Thus, B, C and D is the correct option.

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A tropical dry rain forest is Warm and gets little rain, less than tropical rainforest. Found in places like Mexico, centural India, southeastern africa, indochina, madagascar, eastern bolivia, and other places..

Tropical rain forests typically rain all year around in locations of South America, Western Africa, and Southeast Asia.

I donot know if this is what you meant to ask or to answer a correct sentence pair but I hope this helps. :)

Answer is A. 430 as the speed of sound in water is 1498 m/s but the question has taken an approximate of 1400 m/s

The expected speed of sound in the students' colder-than-usual school room would be lower than the accepted room temperature value of 346 m/s, and much lower than the speed of sound through water.

The speed of sound through air varies with temperature and the typical value at room temperature (20°C or 68°F) is 343.5 m/s. This value decreases when the air is colder. Since the accepted speed of sound at room temperature air is 346 m/s, and the school is colder than usual, the speed of sound in the school's room would be expected to be less than 346 m/s, certainly lower than the speed of sound through water which is about 1482 m/s. When the students use standing wave patterns in their lab procedure, they would find a speed lower than the standard 346 m/s due to the lower temperature of their environment.

The accepted speed of sound in room temperature air is 346 m/s. However, in the question, it is mentioned that the speed of sound through water is 1400 m/s.

Since sound travels faster through solids and liquids than through gases, we can conclude that the speed of sound through air will be less than 1400 m/s. Therefore, none of the speeds listed in the options could be the speed of a sound wave through air.

Collagen and elastic fibers make up dense connective tissue. This type of tissue, with its combination of strength and flexibility, is notably found in tendons and ligaments.

Collagen and elastic fibers form a crucial component of a type of connective tissue known as dense connective tissue. They combine to create the dense, fibrous connective tissue found particularly in areas where flexibility and strength are required, such as tendons and ligaments. Collagen provides strength and firmness while elastic fibers impart flexibility to the tissue. Hence, the combination of these two results in a tough, flexible tissue capable of withstanding considerable mechanical stress.

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The correct answer is the type and sequence of molecules along each strand.  

The DNA is formed of molecules known as nucleotides. Each nucleotide comprises a sugar group, a phosphate group, and a nitrogenous base. The four kinds of nitrogen bases are thymine (T), adenine (A), cytosine (C), and uracil (U). The order of these bases is what that determines the genetic code or the DNA instructions.  

In real life examples cytoskeleton can be :

If we take cell as a factory, then cytoskeleton is like a building frame of that factory because it provides mechanical support that enables cells to carry out essential functions like division and movement.

If we take cell a whole  society then cytoskeleton is like roads to that society because it provides a path for the movement of other organelles and materials.

The correct answer is: A. All will have both red and white flowers.

If camellia plant with red flowers (RR) is crossed with a camellia plant with white flowers (WW), then

P: RR  x WW

F1 generation: RW RW RW RW

This means that all of the offspring will have both colors. Codominant means that red and white are equally dominant (both expressed).

In a cross between camellia plants homozygous for red and white flower alleles which are codominant, all offspring will have both red and white flowers visible.

In camellia plants, flower color is controlled by a single gene with codominant alleles. The red (RR) and white (WW) flowers represent plants that are homozygous for the red and white alleles respectively. When these plants are crossed, the offspring receive one allele for red and one for white from the parent plants. As they are codominant, both alleles will express themselves, resulting in a phenotype where both red and white are visible. Therefore, the correct answer is A. All will have both red and white flowers.

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Answer:  

Aerobic respiration is a process glucose produces energy in the presence of oxygen. In this process glucose is oxidized to produce carbon dioxide, water and energy in the form of ATP.

C₆H₁₂O₆ + 6O₂ = 6CO₂ + 6H₂O + Energy (ATP)

Three main processes that make up aerobic respiration are:

1. Glycolysis:  it takes place in the cytosol of the cell. Here, glucose is oxidized to form three carbon molecule pyruvate. This process produces energy in the form of 2 ATP molecules and 2 NADH molecules. These NADH molecules carries 2 energy electrons these electrons are utilized by the electron transport chain.

2. Kreb's cycle: it takes place in the cytoplasm and mitochondria of the cell. Here, the molecules of pyruvate produced during glycolysis is utilized to produce ATP.

3. Electron transport chain:  glucose is not entirely converted into ATP. The NADH molecules produce during glycolysis  produces 2 energy electrons these electrons are taken up by electron transport chain in the mitochondria inner matrix. A proton gradient develops across the matrix after donation of electrons to electron transport chain. This gradient in turn produces energy in the form of ATP.

Aerobic cellular respiration has three stages: glycolysis (anaerobic process), the Krebs cycle, as well as oxidative phosphorylation.

Aerobic respiration is a chemical process that produces energy from carbohydrates by using oxygen. Cell respiration, aerobic metabolism, and oxidative metabolism are other terms for the same thing.

The citric acid (Krebs) cycle, an electron transport chain, and chemiosmosis are the four stages of aerobic respiration.

Aerobic respiration produces energy, which is used to power all cellular processes. The reactions produce ATP, which is then used to power other life-sustaining processes like growth, repair, and maintenance.

Glycolysis is a cytoplasmic pathway that produces energy while converting glucose into two three-carbon compounds.

The tricarboxylic acid (TCA) cycle, also known as the Krebs cycle or the citric acid cycle, is the primary source of energy for cells and is required for aerobic respiration to occur.

Oxidative phosphorylation is the method by which ATP generation is encompassed to the movement of electrons via the mitochondrial electron transport chain as well as the associated grabbing of oxygen.

Thus, these are the three main processes that makes up aerobic respiration.

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The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.

The cell nucleus is a membrane-bound structure that houses the cell's genetic information and regulates its growth and reproduction. It is the command center of a eukaryotic cell and is usually the most visible organelle in the cell, accounting for about 10% of the cell's volume.

When viewing a cell image, the nucleus is one of the most visible parts of the cell. The nucleus is located in the center of the cell and contains all of the cell's chromosomes, which encode the genetic material.

It contains the cell's genetic information and regulates its growth and reproduction.

The nucleus has been defined as a membrane-bound structure that contains a cell's genetic material.

The structure of nucleus includes:

Thus, above mentioned is the structure of the nucleus along with the function of each part.

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Answer:

A. energy obtained from coal --------------> Non Renewable

B. energy obtained from burning plant waste. --------------> Non Renewable

C. energy obtained from water springs inside the Earth. ---------Renewable

D. energy obtained from natural gas.------------Non Renewable

Explanation:

Renewable energy resources are those which can be used again and again. This reuse is possible because either they are present in ample amount or they are produced in a very short span of time.  

While a non-renewable energy resource cannot be used again and again. Also if they are recreated,  they take millions of years which in other way round lead to their depletion.  

Based on the above explanation, the classification is as follows -

A. energy obtained from coal --------------> Non Renewable

B. energy obtained from burning plant waste. --------------> Non Renewable

C. energy obtained from water springs inside the Earth. ---------Renewable

D. energy obtained from natural gas.------------Non Renewable

The classification of the energy sources is as follows:

A. energy obtained from coal: Non renewable

B. energy obtained from burning plant waste: Non renewable

C. energy obtained from water springs inside the Earth: Renewable

D. energy obtained from natural gas:Non renewable

Renewable energy resources are those energy sources that are gotten from natural materials which can be used and reused again. Examples include water, soil and plants.

Non renewable energy resources are those energy sources that are artificially gotten and they can't be renewed. Examples include coal, oil,steel aluminium.

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ah! All thanks to the cell membrane!

The cell membrane contains phospholipids that are amphiphilic (polar - water attracting and non-polar - water repelling) in nature. That's why the cell membrane allows non-polar materials to pass through but not polar materials. (if you're learning junior science you really don't need to know this!) The polar materials require proteins found on the cell membrane called protein channels or carrier proteins to pass through. (their names are pretty self-explanatory!)      

All the best!

Both Eras and Periods measure time after the start of the Cambrian Period, which means that your answer is:

C.

Hope it helped,

BioTeacher101

The correct answer is option C, that is, eras and periods both appear at the start of the Cambrian period.  

The first geological time period of the Paleozoic Era is known as the Cambrian period. This period ended for approximately 53 million years and signifies a dramatic burst of evolutionary modifications in life on Earth also called Cambrian Explosion.  

The Cambrian period signifies an essential phase in the history of life on Earth. It is the phase when the majority of the prime animal groups initially appeared in the fossil record. An era refers to a particular time period, while a period may be used to signify towards the events, which do not exhibit any particular era or precise dates.  

Thyroxine is an important hormone released into the bloodstream by the thyroid gland in the body. When tyroxine is released into the blood stream, it moves through certain organs such as the kidney and liver, where most of it is changed to an active form known as triiodothyronine. Thyroxine perform important roles in brain development, heart and digestive functions, bone maintenance, controlling muscle and metabolic rate of the body.

A. I need to make this 20 characters long so yeah

Plants absorb water from the soil through their roots. Some of this water is used for photosynthesis; Most of this water evaporates into the air through transpiration. Therefore, option (A) is correct.

Plants absorb water from the soil through their roots, and some of this water is used for photosynthesis, while most of this water evaporates into the air through transpiration. Transpiration is the process of water movement through a plant and its evaporation from aerial parts, especially from the leaves and stems.

It helps plants to absorb nutrients from the soil and transport them to the rest of the plant. The process of photosynthesis occurs in the leaves, and water is one of the essential components needed for this process. Therefore, only some of the absorbed water is used for photosynthesis, and the remaining water is released into the atmosphere through transpiration.

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Answer;

The above statement is true

Explanation;

-Circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation.

When an object moves in a circle at a constant speed its velocity (which is a vector) is constantly changing. Its velocity is changing not because the magnitude of the velocity is changing but because its direction is.

Answer:

true

Explanation:

If the marine plant is placed in a freshwater environment, then the cells will undergo plasmolysis.  

The plants found in the freshwater surroundings are adjusted for osmoregulation in hypotonic environments. If one place this type of plant in a marine environment, that is, one with a greater concentration of dissolved salts, then the environment is considered as hypertonic environment. The cells of the plant will lose water and will go through the process of plasmolysis.  

The Cell will burst or swell due to the large amount of water enters in plan call.

The DNA in eukaryotic cells is enclosed in the nucleus, while the DNA in prokaryotic cells is not separated from the rest of the cell's contents.

Answer:

The correct answer will be option D.

Explanation:

Hominids are the species of a large group of primates genus called Homo. The history of this genus dates back about 2.5 million years ago based on the fossils found.  

In the given question to assign the species taxon to the new fossils, the study of fossils has to be done more deeply to check whether they belong to the same species or not. This could be done by studying their anatomical features in detail that is studying their bones in detail and comparing them.

Thus, option D is the correct answer.

The correct answer is DNA helicase.  

DNA helicases help in the unwinding of DNA. They play an essential function at the time of DNA replication as they distinct the double-stranded DNA into single strands, and permit each strand to undergo copying or duplication.  

It works by melting the hydrogen bonds, which holds the DNA into the double helical composition. The region of the DNA where the DNA helicase has unzipped the DNA is called replication fork.  

2 to counteract the protons

Answer:

c. increased waste production

Explanation:

Scientific advances are a boon to mankind because they really make our life easy, fast and worth living. But increased waste production is the greatest disadvantage of scientific advances. In recent years, various industries have been established to meet the ever increasing demands of scientific equipments, various chemicals, goods required for use in day to day life etc. After manufacturing goods these industries are left with a lot of toxic and hazardous waste products which they either dump in nearby water bodies or open land which leads to soil pollution, water pollution and air pollution.

A food chain describes how energy and nutrients move through an ecosystem. At the basic level there are plants that produce the energy, then it moves up to higher-level organisms like herbivores. After that when carnivores eat the herbivores, energy is transferred from one to the other.