Answer:
Nutrient pollution is the process where too many nutrients, mainly nitrogen and phosphorus, are added to bodies of water and can act like fertilizer, causing excessive growth of algae. Nutrients can run off of land in urban areas where lawn and garden fertilizers are used
Explanation:
Excessive nutrients from fertilizer in runoff often cause excessive growth of which can lead to the creation of dead zones in aquatic ecosystems is known as eutrophication.
This nutrient overload give rise to dense growth of algae, water hyacinth. and Cyanobacteria. When the algae die out, their decomposition by aerobic bacteria (oxygen presence) depletes dissolved oxygen in the surface layer of water near the shore and in the bottom layer.
What is biochemical oxygen demand (BOD)?
The biochemical oxygen demand (BOD) is defined as the amount of dissolved oxygen consumed by biological organisms when they decompose organic matter in water.
This oxygen depletion may kill fish and other aquatic animals. If excess nutrients continue to enters into lake, then anaerobic bacteria take over and produce gaseous decomposition products such as smelly, highly toxic hydrogen sulfide and other flammable methane gases.
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Helppppppppppppppoo meeeeeeee
The cell membrane of a retinal photoreceptor contains sodium channels that at rest (in the dark) are normally ________ and have a resting potential that is ________ compared to other neurons.
Answer:
open; depolarized
Explanation:
The photoreceptors, i.e., rods and cones, are specialized neurons located in the retina. These cells convert sunlight into electrochemical signals which are interpreted by the central nervous system. The cGMP-gated channels that are expressed in photoreceptor plasma membranes have a major role in this process by regulating the flow of sodium (Na+) and calcium (Ca2+) ions in the outer side of the membrane via changes to cyclic guanosine monophosphate (cGMP) levels which are induced by light. In the dark, high cGMP levels maintain channels in an open state, thereby allowing the passage of Na+ and Ca2+ ions to flow into the outer segment of photoreceptors in order to maintain them in a depolarized state.
Which does not describe the relationship because nucleus and the electron cloud of an atom?
Complete Question:
Which does not describe the relationship between nucleus and the electron cloud of an atom?
Group of answer choices.
A. the electrons move faster than the particles in the nucleus
B. the masses of the nucleus and electron cloud are balanced
C.the charges of the nucleus and electron cloud are balanced
D.the electron cloud takes up much more space than the nucleus
Answer:
B. the masses of the nucleus and electron cloud are balanced
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such determines or defines the structure of a chemical element.
Generally, atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.
In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
An electronic cloud can be defined as a group of negatively charged electrons circulating around an atomic nucleus. It is typically referred to as valence electrons.
Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others.
Both the protons and neutrons of an atom of a chemical element have a mass of 1 atomic mass unit (amu) while an electron have an approximate mass of 0 atomic mass unit (amu).
Hence, the masses of the nucleus and electron cloud of an atom cloud are not balanced.
¿que contamina mas?
las fabricas
los automoviles
las taquerias
la quema de basusa
An inherited trait is
A. a characteristic determined by and organism's genes
B. a skill developed through practice
C. an organism's place in the food web
an organism's relationship to its parents
Answer:
pretty sure the correct answer is C
Which one is the correct answer?
Answer:
The answer is B
Explanation:
Apoptosis is the process of programmed cell death. It is used during early development to eliminate unwanted cells; for example, those between the fingers of a developing hand. In adults, apoptosis is used to rid the body of cells that have been damaged beyond repair.
What is one reason that carbon dioxide is increasing in the atmosphere
today? *
Answer:
Concentrations of carbon dioxides are rising mainly due to energy-burning fossil fuels. Fossil fuels such as carbon or oil include carbon plants which, over the years, are photosynthesized in the atmosphere; in a few hundred years we have returned this carbon to the air
Explanation:
Even fundamental human functions — eating inhalation and digestion — generate CO2. In the life cycles of the earth, it is an essential chemical. Active plants and trees are absorbing CO2 and turning it into food with sunlight and water. There are problems when more CO2 is emitted than is absorbed by our vegetation. Activities to produce high carbon dioxide include:
Consuming electricity: Fossil fuels emit CO2, with coal emitting twice as much gas as oil. Worldwide, 85% of energy is generated by fossil fuels. As China and India continue to industrialize, the number of coal-burning plants will rise. Today, power generation represents 41 percent of CO2 emissions in the United States.Transportation: Locomotive is the second greatest source for U.S. CO2 emissions for business or pleasure. Travel is also a factor internationally. A cruise ship study indicated that holidays at sea produce 12 times more CO2 than on land. 41,000 tonnes of CO2 was generated at Denmark's 11-day worldwide Copenhagen Conference on Climate Change. U.S. representatives alone produced sufficient CO2 to fill 10,000 Olympic pools.Building: Manufacturing produces large amounts of CO2, yet only represents 2% of US emissions. The most serious offenders are the manufacture of iron and steel and cement. These businesses use huge amounts of thermal energy to turn commodities into building products.Deforestation: Trees are powerful organisms that absorb CO2 from the air and remove it. It stops the process by cutting them down. While deforestation is a tiny source of increasing CO2 in the U.S., 20 percent of global CO2 emissions are due to forest loss. Fuel-burning trees and natural forest material breakdown also generate CO2.How Many Years Ago Was Parachute Invented?????
If YOU WANT BRAINLEST THEN ASAP
Answer: 4,000 years ago
The parachute was invented 4,000 years ago, when Chinese observers noticed that air resistance slowed free-falls. Legend states that a safe jump was made from a granary using two bamboo hats. In the 800s, Abbas Ibn "Armen" Firnas jumped off a tower in Cordova (Iberian peninsula) using a large cloak like a wing.
During the Cardiovascular Function Labster simulation, cardiac output did not increase as much as oxygen consumption rate (which increased 8x), what is the most likely mechanism that could allow increased oxygen delivery by the cardiovascular system
Answer:
An increase in the rate of oxygen that has been removed from hemoglobin could increase the supply of oxygen by the cardiovascular system.
Explanation:
Hemoglobin is a protein, present in the cardiovascular system, whose main function is to remove oxygen from the lungs and take it to the tissues of the human body. Therefore, the more oxygen is removed from the hemoglobin, the greater the oxygen supply. This applies even in the situation presented in the question above, where cardiac output did not increase in the same way as oxygen consumption. In this case, if oxygen consumption is high, the removal of oxygen from the hemoglobin must be increased to supply this consumption.
PLS HELP BIG GRADE 5. Water stored in a reservoir is used to generate electricity as it flows down and into a river. The river flows to the ocean, where it evaporates to form clouds. Rain falls from the clouds into streams that flow into the reservoir.
Which location of the water has most potential energy? Assume the amount of water in each place is the same. These are the locations: 1. where it enters the river from the reservoir, 2. when it is in the ocean, 3. when it is in the reservoir, and 4. when it is in the clouds.
1. Where it enters the river from the reservoir.
2. When it is in the ocean.
3. When it is in the reservoir.
4. When it is in the clouds.
Explain your answer.
Answer: Water falls from a reservoir through a channel to a turbine. The water turns the turbines, which allows the generator to make electricity.
Explanation: Hydroelectricity can be defined as the generation of electricity by utilizing the speed of water stream in a reservoir of water. The high speed water current is used to move the water turbine the energy produced in the turbine can be used to generate electricity by the generator.
When deciding on new environmental policies
and laws, which term is used to describe the
comparison between benefits and costs of
human activities?
Answer:trade-off
Explanation:trust me bro i just got it right
Describing Periods on the Periodic Table
Which statement accurately compares the trends in atomic number and atomic mass in the periodic table?
The atomic number increases from left to right, while the atomic mass increases from right to left.
O The atomic mass increases from left to right, while the atomic number increases from right to left.
O Both the atonic mass and the atomic number increase from left to right.
O Both the atomic mass and the atomic number increase from right to left.
What are the early signs of osteoarthritis?
With 600 islands, the largest freshwater lake in Europe is Lake _________
Answer:
Lake Ladoga is the answer
I need help with all the questions and filling out the punnet square
Answer:
Umm are you supposed to be in summer break
Explanation:
Because I am in summer break
Why does a buzzer starts to buzz as soon as the circuit is complete?
Answer:
The circuit is complete again and the the electric charges start to flow. ... Depending on the distance between the electromagnet and the nail, the rigidity of the rubber band and the strength of the electromagnet, the circuit can be broken and completed several times a second. Hence you hear a buzzing sound
Answer:
Depending on the distance between the electromagnet and the nail, the rigidity of the rubber band and the strength of the electromagnet, the circuit can be broken and completed several times a second. Hence you hear a buzzing sound.
100 points
what is 1 times 1 in Biological perspective
Answer:
1
Explanation:
Answer:
is answer 3
Explanation:
never even heard of Biological perspective
What is the process of mitosis?
Answer:
duplication of 2 dioploid identical sister cells
Explanation:
inter-phase, pro-phase, meta-phase, ana-phase, telo-phase, cytokinesis
What results will the scientist most likely obtain when placing drops of the indicator on the leaves?
Answer:
The scientist will be most likely obtain when placing drops of the indicator on the leaves by resulting dark purple.Explanation:
dark purple is the answer.
Considering that the indicator is Phenolphthalein, then it will remain colourless. If it is methyl orange, then it will become red. If it is universal indicator, then it will become blue to dark blue. Because leaves are slightly acidic.
The best place to find an oligodendrocyte?
Each oligodendrocyte forms one segment of myelin for several adjacent axons.Oligodendrocytes are found only in the central nervous system, which comprises the brain and spinal cord.
What is another name for spongy bone?
Answer:
Cancellous bone or trabecular bone
Explanation:
Another name for spongy bone is the Cancellous bone or trabecular bone.
Answer:
trabecular bone
Explanation:
which is considered a chemical mutagen
What is the name of three bases on mRNA called?
A.gene
B. codon
C. triplet
D. anticodon
Answer:
B
Explanation:
Each group of the three bases in mRNA constitutes a codon, and each codon specifies a particular amino acid
▪️Chapter - The fundamental unit of life
▪️Quality answer needed
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Answer:
The difference between Prokaryotic cell and Eukaryotic cell are;
[tex]\begin{array}{lll}&\underline {\text {Prokaryotic}}& \underline {\text {Eukaryotic}}\\ \\ \text {Nuclear \ membrane \ and \ nucleus} & \text {No \ true \ nucleus \ or} & \text {Has \ a \ true \ nucleus} \\& \text {nuclear \ membrane} & \text {nucleoli \ and \ nuclear \ membrane}\\\\ \text {Membrane \ bound \ cell \ organelle} & \text {None &Present} \\\\ \text {Chromosome \ number \ and \ shape} & \text {One} & \text {Several, more \ than \ one} \end{array}[/tex]
Explanation:
Prokaryotic cells
The plasma membranes surround prokaryotic cells, however, within their cytoplasm, there are no organelles bound to the membrane and there is no nucleus in the prokaryotic cell which differentiates it from the eukaryotic cells
Eukaryotic cells
Eukaryotic cells also have plasma membranes, ribosomes and cytoplasm. Eukaryotic cells also have membrane-bound nucleus, membrane bound organelles, such as chloroplast, mitochondria, endoplasmic reticulum, and Golgi apparatus which together differentiates it from a prokaryotic cell
Consider two children with the same two parents. Would you expect them to have the same sets of chromosomes? Explain why or why not.
Answer:
Some of the same
Explanation:
Well, if one is a boy and one is a girl they might look similar but they will have a lot more different chromosomes than if they were both the same genders, but they still wouldn't be exactly the same because everyone, even identical twins have chromosomes differences, even if you cant see them. My final reason is that one sibling might get more genes from one parent than the other.
Besides the interaction between animals and plants, what other factors may be involved in the carbon and oxygen cycles?
Answer: .co2
Explanation: co2
The other factors which are involved in the carbon and oxygen cycles are air, ground, respiration, and photosynthesis.
Which factor contributes to the carbon cycle?
Explanation: Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere.
How do plants and animals interact with the carbon cycle differently from one another?Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too. Carbon moves from plants and animals to soils. When plants and animals die, their bodies, wood, and leaves decay bringing the carbon into the ground.
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The student comes up with the following hypothesis: Hypothesis: If I increase the
temperature of the water, then the rate of cellular respiration will increase because the
yeast will be more active. For the lab report, what should the student state as their
problem/question they are trying to answer
Answer:
what happens to the rate of cellular respiration when the temperature of the water increases.
Explanation:
I'm not 100% sure but i think that, that is at least close to what you are looking for.
The discovery that the brain contains specific receptors for manufactured opiate drugs such as morphine implies that the body must make an ___ substance that interacts with those same receptors.
Answer: ENDOGENOUS
Explanation: Receptors readily binds with biochemical messangers (called ligand) in the body system.
A particular receptor will only bind with a specific ligand, which translates that a specific receptors which readily binds with opiate drugs (such as morphine and oxycodone) for reducing body response to pain, must have been in the past, had an interaction with an endogenous biomolecule similar in molecular composition with that of opioid pain relievers .
Which part of the brain is indicated by the arrow below?
Pons
Cerebellum
Cerebrum
Medulla oblongata
Answer:
Pons
Explanation:
The Pons of the brain is indicated by the arrow below.
Pons is located in front of cerebellum, composed up nerve fibers make a bridge between he two hemispheres of the cerebellum of brain. Thus option A is correct.
What are the different parts of brainstem ?
The brain stem have different parts such as midbrain, pons, medulla oblongata.
The midbrain present between the cerebrum and pons.
The nuclei and cerebral tracts are present, where nuclei act as a relay stations for both ascending and descending nerve fibers, mainly involve in auditory and visual reflexes.
Pons is present in front of cerebellum, the nerve fibers make a bridge between the two hemispheres of the cerebellum.
Medulla oblongata is the most interior part of the brain stem, continuous with the spinal cord, the outer portion is called white matter and the central portion have grey matter.
Thus option A is correct.
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Animal life changed greatly during the Cambrian explosion, with some groups expanding in diversity and others declining. What are the current hypotheses that explain these trends?
A. Global climate changes.
B. Atmospheric changes.
C. Predator prey relationships.
D. Appearance of the marine top predator.
E. Changes in the regulations of develop.
F. Radiation of numerous terrestrial groups.
Answer: Options A,B,C, and F
A. Global climate changes.
B. Atmospheric changes.
C. Predator-prey relationships.
F. Radiation of numerous terrestrial groups.
Explanation:
Due to increasing natural disasters (such as volcanic eruption) and arthropological activities (such as mining) that led to the emission of harmful gases, changes in the atmosphere and overall climatic conditions is established.
They saturate the atmosphere and due to limited carbon sinks to absorb them, they alter the climatic parameters like temperature, rainfall, and relative humidity.
The effects of change in climatic parameters are flooding, habitat destruction, increased predation, and among others. Thus, leading to dispersal of some animal species and decline of many others.
Predator-prey relationship also plays an important role in the expansion (likely through migrating from danger) and in most cases decline of some animal species, especially when there's limited prey species to go round for the predators.
