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The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. The absorbed energy warms the atmosphere and the surface of the Earth.
______________________Un nucleótido del ADN está formado por: * a.-un azúcar desoxirribosa, un grupo fosfato y dos bases nitrogenada b.-una ribosa, un grupo fosfato y una base nitrogenada c.-una ribosa, un grupo fosfato y cuatro bases nitrogenadas d.-un grupo fosfato, una base nitrogenada y una desoxirribosa e.-ninguna de las anteriores
Answer:
d.-un grupo fosfato, una base nitrogenada y una desoxirribosa
Explicación:
Un nucleótido de ADN está formado por tres componentes, es decir, un grupo fosfato, una base nitrogenada y una desoxirribosa. La adenina, la citosina, la guanina y la timina son las cuatro bases nitrogenadas presentes en el ADN. Los nucleótidos son el bloque de construcción de la molécula de ADN, lo que significa que cada molécula de ADN está formada por varias moléculas que se conocen como nucleótidos. Estos tres componentes son necesarios para la formación de nucleótidos.
PLS HELP ASAP
What percentage of the human body is made up of water?
A) 10%
B) 30%
C) 50%
D) 70%
E) 90%
Answer:
According to question,Option D is the correct
Explanation:
Up to 60% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.
Which statement best predicts why a cell's progression through the cell cycle might be halted by the G1/S checkpoint?
Answer:
The missing options are:
A. Spindle fibers have not correctly attached to chromosomes.
B. Damage occurred to DNA when it was being copied in G1.
C. There are not enough nucleotides available to construct new DNA.
D. Proteins necessary for M phase of the cell cycle have not been produced.
The correct option is C.There are not enough nucleotides available to construct new DNA.
Explanation:
During the G1 phase, the cell grows in size since it prepares its organelles and molecule combinations for the next phase of the cell cycle, the S phase. Before the cell transitions to the S phase, it has to pass through a checkpoint that makes sure that there are no mutations, it has grown enough, and has the necessary molecules for the next phase, which is the synthesis of DNA. If there are not enough nucleotides, the cell will not be able to synthesize new DNA in the S phase, so the checkpoint stops the cells from moving to this phase till it has all the necessary things to do it.
what's the most common mineral in a cell phone ?
Explanation:
Tantalum, found in the mineral columbite-tantalite, is used in the wires and connectors of mobile phones....
the___
controls reflexes.
a. medulla
b. cerebellum
c. cerebrum
Based on the living things in the pyramid, please tell me what examples would fit into these categories
Primacy Producers, primary consumers, secondary consumers, and tertiary consumers.
Answer:
Primacy Producers----- Oak tree , primary consumers------ Caterpillars , secondary consumers ------- blue jays, and tertiary consumers ----- hawk.
Explanation:
Oak tree refers to the primacy Producers in this pyramid because it produces food by using the solar energy. Caterpillars are primary consumers that feeds on the producers and also known as herbivores, blue jays are the secondary consumers that feeds on the primary consumer which is the caterpillar, and tertiary consumers are the hawk that feeds on the secondary consumer i.e. blue jays. In this way, energy flows in the food chain of an ecosystem. During this flow of energy, only 10% of energy is transferred from one trophic level to another while the remaining releases in the environment in the form of heat energy.
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Answer:
D an organism killing another organism for food.
Answer:
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while the largest member is about 30 centimeters long. Which of these lists best describes this order?
Which of the following activities emits greenhouse gases into the atmosphere, contributing to a rise in global temperatures?
Answer:
C
Explanation:
Answer:
C the volcano
Explanation:
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Answer: D
Explanation: D
Which is the answer?
In the nucleus of a cell, the dna is usually visible as
A- a dense region called the nucleolus
b- the nuclear envelope
C - granular material called chromatin
D. Condensed bodies called chloroplasts
Answer:
C. Granular material called chromatin
Which product of photolysis is needed for the continuation of the light reactions?
Answer:
Here, NADP+ is the final electron acceptor, which becomes reduced to NADPH. Meanwhile, ATP is also formed. Therefore, these light reactions release oxygen as a waste product of photosynthesis, while ATP and NADPH are essential to the next step in photosynthesis, the dark reactions.
The manure pit has been emptied and Ted now has to enter the manure pit to perform some maintenance work. He is hooked up to a lifeline and his colleague Sam is outside the pit ready to assist should a rescue become necessary. Do you notice any issues in this scenario?
The pit if empty so there is no need for additional precautions
Ted is wearing a lifeline so there is no need for additional precautions
Sam should be wearing a self-contained breathing apparatus
Ted should be wearing a self-contained breathing apparatus
Answer:
D. Ted should be wearing a self-contained breathing apparatus
Explanation:
According to this question, Ted has entered into an empty pit in order to do some maintenance work and his colleague, Sam, is outside the pit ready to assist him in case of emergency.
It is necessary to take additional precautions even if Ted is tied to a lifeline or the pit is empty. However, the additional precaution should be that Ted should be wearing a self-contained breathing apparatus (SCBA) in case of breathing or respiratory problems down the pit.
Why was the evolution of a vascular system important for land plants?
Photosynthesis takes place in the _______________ and releases __________________.
A. mitochondria, oxygen
B. chloroplast, oxygen
C. mitochondria, carbon dioxide
D. chloroplast, carbon dioxide
Answer:
B. chloroplast, oxygen
Explanation:
This is because plants take in the carbon, water, air,and it transforms the water into oxygen and carbon into glucose. So it absorbs light, and the chloroplasts are special structures that are responsible for that absorption of light, They are green, because of chlorophyll, which gives the green pigment to leafs
photosynthesis takes place inside them, so they can absorb light to start the process.
20 POINTS
learned behaviors that frogs have?!!! i need 5 but any that you know is ok and i’ll give brainliesttt
Ếch đồng (Hoplobatrachus rugulosus) là một loài ếch trong họ Dicroglossidae. Nó được tìm thấy ở Campuchia, Trung Quốc, Hồng Kông, Lào, Ma Cao, Malaysia, Myanmar, Philippines, Đài Loan, Thái Lan và Việt Nam. Môi trường sống tự nhiên của nó là đầm lầy nước ngọt, đầm lầy nước ngọt ngắt quãng, đất nông nghiệp, đất đồng cỏ, vườn nông thôn, vùng đô thị, ao, đầm nuôi trồng thủy sản, đào lộ thiên, đất tưới tiêu, đất nông nghiệp bị ngập lụt theo mùa, kênh và mương. Chúng sinh sản vào mùa xuân đến đầu mùa hè.
Answer:
Common frogs are most active at night
hibernate during the winter in pond mud or under piles of rotting leaves, logs or stones.
They can breathe through their skin as well as their lungs.
They can emerge to forage during warm spells in the south west of the country.
In spring males croak to attract females.
Explanation:
Como interactúan Los animales con el suelo El suelo con el agua Los animales con el agua Las plantas con el aire
Answer:
Todas estas cosas interactúan entre sí.
Explicación:
Los animales interactúan con el suelo porque el suelo proporciona hábitat, agua, aire y alimento para los animales que son necesarios para la supervivencia. El suelo interactúa con el agua absorbiendo agua que puede ser retenida por las partículas del suelo que necesitan las plantas y otros animales en el suelo. Los animales interactúan con el agua porque hay muchos animales que viven en el agua y también necesitan agua para sobrevivir. Las plantas interactúan con el aire mediante el intercambio de gases. La planta absorbe gas de dióxido de carbono del aire que se necesita para la fotosíntesis.
7. In an abandoned field, the gradual replacement of grasses by shrubs and then by trees is known as A) predation B) saprophytism C) ecological succession D) transfer of energy
Answer:
C. Ecological Succession.
Explanation:
A is incorrect because predation is the act of an animal preying on another animal for food which has nothing to do with grass and trees. B is incorrect because saprophytism is the ability of certain plants to live in dead or decaying organic matter. For example, imagine mushrooms growing on decaying trees. That still doesn't explain what the REPLACEMENT of grasses, bushes, and trees are called. D is incorrect because that is energy transferring to another, that answer wouldn't make sense. From what I know, ecological succession is the process of change in the species structure of an ecological community over time. So, if there is an abandoned field but grasses and trees are slowly popping up there over time (There's a lot more to it) then C, ecological succession is your answer.
Hope this helps! :3
Two samples of radioactive material from the same rock is prepared for testing. Sample A is cut into a 2 inch cube. Sample B is crushed into a fine powder. Compared to the half-life of the material in Sample A, the half-life of the material in the powdered Sample B is:
Answer:
The same
Explanation:
Half life is the time taken for the number of atoms in a radioactive sample to decrease to half of the initial number of atoms. It is also the time taken for the activity of a radioactive sample to decrease to half of its original value.
If samples A and B were obtained from the same rock, then they contain the same number of atoms having the same initial activity even though the samples were not prepared in the same way for analysis.
Hence, samples A and B have the same half life.
Which occurs just before a volcanic eruption?
Most of the time a earthquake happens
their was no choices so hope this is what you were looking for
have a great rest of your day :)
Explanation:
To expand on the other persons answer, before an eruption the area around the volcano will most likely start experiencing earthquakes or tremors, this is because magma and chunks of rock are pushing through the earths crust. Other things are also common, such as hot springs near the soon to erupt volcano may change in temperature or new hot springs may form.
question in pic! will give brainliest
Answer:
denitrification
Explanation:
Denitrification occurs when N is lost through the conversion of nitrate to gaseous forms of N, such as nitric oxide, nitrous oxide and dinitrogen gas. This occurs when the soil is saturated and the bacteria use nitrate as an oxygen source. De-nitrification is common in poorly drained soils.
What are two of the products of the Krebs cycle?
Cual son las consecuencias y el tratamiento del crecimiento lento en niños? Plis me pueden decir con explicación
Answer:
Efecto adverso sobre la salud.
Explicación:
El crecimiento lento de los niños afecta la salud de los niños, haciéndolos más susceptibles a enfermedades e infecciones, pero también afecta su desarrollo mental y físico. Las inyecciones de hormona del crecimiento y los medicamentos de reemplazo de la hormona tiroidea son tratamientos que se usan para tratar el crecimiento lento en los niños. La deficiencia de la hormona del crecimiento se puede tratar mediante inyecciones de hormona del crecimiento. Los medicamentos de reemplazo de la hormona tiroidea se utilizan para compensar la hipoactividad de la glándula tiroides del niño.
Students filled two beakers with 500 mL of water each. They placed three drops of live algae culture into each of the beakers, then used a dissolved oxygen sensor to measure the oxygen content of the water in each beaker. The students then stirred 5 mL of nitrogen-rich fertilizer into one of the beakers, and labeled the beaker A. Nothing was added to the second beaker, which the students labeled B. Both beakers were placed under a high-intensity light over a weekend. On Monday, the students measured the amount of oxygen in the water of each of the beakers. Which aspect of the watershed were these students trying to model?
A. The effect of fertilizer-contaminated surface water flowing as runoff into a waterway
B. How stagnant or non-flowing water can result in providing a habitat for living organisms such as algae
C. The inverse relationship between water, light, oxygen, and photosynthesis
D. How light and oxygen levels in water affect the growth of algae within a system over time
D. How light and oxygen levels in water affect the growth of algae within a system over time
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What causes oxygen debt
Answer:
The amount of oxygen required to remove the lactic acid, and replace the body's reserves of oxygen, is called the oxygen debt. When someone who has been exercising pays back an oxygen debt, it can take from a few hours for normal exercise, to several days after a marathon.
Explanation:
Answer:
The amount of oxygen required to remove the lactic acid, and replace the body's reserves of oxygen
Explanation:
A cattail is an example of which of the following flower types?
O Filler
O Mass
O Greenery
O Line
The upright perennial plants emerging from creeping rhizomes are cattail. They have smooth margins with long tapering leaves and are spongy. It is an example of line flower types, option D.
What are the characteristics of cattail?Cattails are longstanding plants that are aquatic and grow tall in rice fields, drainage ditches, and irrigation canals.
They have fleshy creeping stems that are quite long (rhizomes). Leaf blades are stiff, rounded on the back, spiral in the top half, and sheathed together at the base, giving the appearance of being "flattened."
These are included under line flowers category.
Thus, the correct option is D.
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How many atoms of hydrogen are in NH3? *
1
2
3
4
Which structure provides a link between the nervous and endocrine systems?
A. pituitary gland
B. hypothalamus
C. adrenal gland
D. thyroid gland
Answer:
B
Explanation:
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