According to the research, the correct answer is Option C. Loss of a keystone species is a situation that could cause an ecosystem to lose its equilibrium.
What are keystone species?It is a species whose role in the trophic chain is essential for the ecosystem and the conservation of biodiversity.
In this sense, their extinction from a certain region would generally negatively affect the dynamics of that ecosystem, most likely the environment would lose its ability to support life and remain desert.
Therefore, we can conclude that according to the research, the keystone species are those that, before their disappearance, the ecosystem would be seriously unbalanced.
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Answer:
Huh?? what did you say?
Explanation:
tRNA is involved in?
A. carrying amino acids
B. carrying glucose molecules
C. carrying ribosomes
D. carrying nucleotides
Answer:
carrying aminio acid
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What are the products of photosynthesis?
O A. C2H4O2 and H20
O B. C2H4O2 and 02
O C. C6H1206 and H20
O D. C6H1206 and 02
:)
Answer:
c
Explanation:
am not really sure but the c6h12o6 actually stands for glucose
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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The government of a flood prone region wants to implement some measure to reduce risk of floods. Which method is likely to reduce the risk of floods in that region
Answer:
The correct answer is "preservation of wetlands".
Explanation:
Wetland are areas of lands that are saturated with water, usually comprised by marshes or swamps. Preservation of wetlands help to reduce the risk of floods because wetlands temporarily store and slow the release of stormwater. It has been reported that areas where wetland have been lost, the chances of flood increases by as much as 80 percent. The government of a flood-prone region would likely reduce the risk of floods by preserving its wetlands.
Select all that apply.
Which of the following are not properties of lipids?
derived from fish, beans, milk, and eggs
held together by peptide bonds
made up of steroids and phospholipids
deep, long-term storage of energy
Answer:
b
Explanation:
because they are held together by ester bonds not peptide bond :)
Plants such as Venus fly trap and the Sindhu attract and consume in six these plants are able to produce substance which breakdowns in six into compounds that are usable by plants one element obtain from these compounds is nitrogen the chemical compounds that break down the insects are most likely
Answer:stomach acids i presume such as Gastric acid, or what most people call stomach acid, is vital in the proper breaking down of your food. It's composed of multiple compounds and enzymes, which form the fiery cocktail of hydrochloric acid (HCI), potassium chloride and sodium chloride.
Explanation:
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.
que es el arte rupestre
Answer:
Explanation:
El arte rupestre es todo aquel dibujo o expresión artística prehistóricas que se hallan impresas en rocas y cavernas, ya que el hombre de este tiempo plasmaba allí su arte y desarrollaba gran parte de su vida en estas cuevas para refugiarse de depredadores y de las inclemencias climáticas.
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
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.
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.Drag the tiles to the correct boxes to complete the pairs.
Match the terms with their definitions.
Dominant gene.
Phenotype.
Gene.
Genotype.
A sequence of DNA responsible for coding a protein ___.
The complete range of alleles an organism carries for a specific trait ___.
An allele that determines the outward trait of a heterozygous organism ___.
The observable characteristics of an organism ___.
Answer:
1. phenotype
2. dominant gene
3. genotype
4. gene
▪️Chapter - The fundamental unit of life
▪️Quality answer needed
▪️No Copied answer ( This type of answer will be reported at spot)
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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
Which best describes what solar systems are comprised of? stars, planets, moons, asteroids, and comets galaxies universes planets, moons, comets, and asteroids
Answer:
The correct answer is star,moon,planets,moons, astroid and comets galaxy universes planets,moon, comets and astroids.
Explanation:
The above answer is correct
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Match the information given with the correct stage of labor: 1st (dilation), 2nd (expulsion), or 3rd (placental).
1. Stage that has the onset of regular uterine contractions and dilation of the cervix___.
2. Stage in which the cervix dilates to a diameter of about 10 cm____.
3. The stage which commonly lasts 8-24 hours____.
4. The stage in which the amniotic sac ruptures____.
5. The stage in which the baby exits the vagina_____.
6. The stage which commonly lasts from a few minutes to an hour____.
7. The stage in which contraction of the woman's abdominal muscles assists the uterine contractions_____.
8. The stage in which the placenta is expelled from the uterus_____.
Answer:
The correct answer is -
1) 1st stage
2) 1st stage
3) 1st stage
4) 1st stage
5) 2nd stage
6) 2nd stage
7) 2nd stage
8) 3rd stage.
Explanation:
Labor has three different stages 1st (dilation), 2nd (expulsion), or 3rd (placental).
Stage 1st: It is the stage that starts with dilation of the opening of the cervix to 10 cm and contraction of the uterus.
Stage 2: in this stage fetus head moves to the cervix and gets into the birth canal of the mother.
stage 3. The placenta and umbilical cord expel from the mother and this is cut after the delivery.
With 600 islands, the largest freshwater lake in Europe is Lake _________
Answer:
Lake Ladoga is the answer
Where are neutrons located?
O A. Outside the nucleus of an atom
O B. Inside the cell membrane
O C. Inside the nucleus of a cell
O D. Inside the nucleus of an atom.
Answer:
D. Inside the nucleus of an atom.
Explanation:
The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).
Answer:
D
Explanation:
Since this is a biology/chemistry question, you have to be careful that you use the right term. You must be talking about atoms. So B and C are both incorrect because the word cell is used as the main location.
What about A and D? The atom is used and those two are the ones you need to consider. A neutron gives its home address as the nucleus. It is part of the nucleus. So A is incorrect. A neutron is inside the nucleus.
That leaves with D and that's the answer.
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.
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
I need help with the filling in the Punnett square.
Answer:
Both of the squares are filled out correctly
which of the following observations led mandel to conclude that some traits were recessive?
Answer:
D
Explanation:
Which factor causes the shape of a fatty acid to be straight?
Explanation:
Saturated Fatty Acids
The primary components of fatty acids are carbon, hydrogen, and oxygen. When carbon atoms bond together, they form a single bond and can exhibit a zig-zag shape. When the overall molecule is seen, the entire fatty acid appears as a fairly straight line.
Name the gas. 1. Used in respiration 2. Produced in respiration 3. Used in photosynthesis 4. Produced in photosynthesis
Answer: Oxygen
Explanation:
Explanation:
The fixation or reduction of carbon dioxide is a process in which carbon dioxide combines with a five-carbon sugar, ribulose 1,5-bisphosphate, to yield two molecules of a three-carbon compound, glycerate 3-phosphate, also known as 3-phosphoglycerate.
MAY IT HELPS U MATE
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
Explain why spring tides are higher than all other tides.
Answer:
In both cases, the gravitational pull of the sun is 'added' to the gravitational pull of the moon on Earth, causing the oceans to bulge a bit more than usual. This means that high tides are higher and low tides are lower than average. These are called 'spring tides.
Explanation:
Fun facts:
Why are the spring tides the highest tides each month? Twice each month, the moon, sun, and Earth are aligned, so the pulling forces are combined to produce the highest and lowest tides, called spring tides.
Forest fires can cause a secondary disturbance in an ecosystem what is a secondary disturbance
Answer:
A progressive series of changes that take place in an area where a
community is living.
Explanation:
Answer:
important to remember that the so called “secondary” disturbance is secondary only because it occurs second sequentially.
Explanation:
hope it helps
La imagen muestra a dos hermanos con sus abuelos.
¿Qué explica mejor por qué los hermanos se parecen más entre sí y menos a sus abuelos?
Los hermanos están más relacionados entre sí que con sus abuelos.
Cada hermano está más relacionado con los abuelos que con el otro hermano.
Los abuelos no tienen características compartidas en común con los hermanos.
Los abuelos no comparten características entre ellos.
What is the purpose of meiosis I and II ?
A) To convert one type of cell into another
B) To produce new body cells
C) To produce games, or sex cells
D) To make offspring
