Answer:
B. A population explosion of nitrogen-fixing bacteria would cause dissolved nitrogen
levels in the water to increase.
A population explosion of nitrogen-fixing bacteria would cause dissolved nitrogen levels in the water to increase. The correct option is B.
What are nitrogen-fixing bacteria?Prokaryotic microorganisms called nitrogen-fixing bacteria are able to convert atmospheric nitrogen gas into "fixed nitrogen" molecules like ammonia that plants may use.
The purpose of nitrogen-fixing bacteria is to provide plants with a crucial nutrient that they are unable to receive naturally from the air.
Microorganisms that fix nitrogen can obtain assimilative N for plants in a way that crops cannot. It is absorbed by bacteria from the atmosphere as a gas and released to the soil, mostly as ammonia.
If nitrogen-fixing bacteria suddenly went through a population explosion, the nitrogen cycle would be interrupted since this would result in higher levels of dissolved nitrogen in the water.
Thus, the correct option is B.
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Ecosystems must recuperate after catastrophes such as fires or hurricanes. A forest experiences a fire due to warm climate. Months after the fire, some nonnative
plants began to grow in the area. Why were these plants able to grow?
Answer:
The plants were able to thrive in the newly formed niche.
Explanation:
I took the test + thats what i think
The growth of the non-native plants must have been triggered by the fact the new plants finds the ecosystem favorable.
When Ecosystems experience ecosystem such as fire, drought or other catastrophe which causes damage to the plants and fruits in the area, it causes immeasurable destruction.
Usually in such ecosystem, plants would usually find it difficult to sprout due to the damage caused to the soil nutrients as a result of the disaster.
However, over time, new plants may begin to sprout as they become more used to newly found environment or niche.
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An experiment was designed to test the effect of ultraviolet light on the growth of mold spores. A sample of mold spores was divided into two groups. The groups were grown under the same conditions, except that group A was exposed only to ultraviolet light and group B was grown in total darkness. What is the purpose of group B being grown in total darkness?
To limit bias
It is the dependent variable
It is the control group
To add an alternative variable
Answer:
C
Explanation:
Which is true about eukaryotes?
Their cells do not have any DNA.
Their cells are generally smaller than those of prokaryotes.
Their cells have membrane-bound organelles.
Their cells have plasmids.
Answer:
C
Explanation:
Which of the following cells should have the most mitochondria?
O skin cells
O muscle cells
O blood cells
O nerve cells
‼️‼️‼️please help!!!
Answer:
fossil fuel use in automobiles
Explanation:
Nitrogen oxides come from car exhaust, coal power plants, and factory emissions. VOCs are released from gasoline, paints, and many cleaning solvents. When sunlight hits these chemicals, they form airborne particles and ground-level ozone—or smog.
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PLS FOLLOW ME
Which part of the digestive system food nutrients move into the blood by diffusion
Answer:
Small Intestine
Explanation:
1. Genes always follow Mendel’s rules of inheritance (true/false)
2. Predators kill prey,but are not harmful to the prey population(true/false)
3.Food webs are better at showing relationships in an ecosystem than food chains(true/false)
4. There are other producers besides plants (true/false)
5. Changes in the frequency of different alleles can happen because of mutation,gene flow, and genetic drift(true/false)
6. All mutations are beneficial because they bring about genetic variations and differences (true/false)
7. Natural selection makes sure that an individual can adapt and evolve.(true/false)
8. An animal cells only method of creating energy is through cellular respiration while a plant is only able to create energy through photosynthesis (true/false)
9. Bone cells, skin cells, red blood cells, and nerve cells all have the exact same DNA within your body(true/false)
10. Evolution has made our bodies perfectly fit for our current environments (true/false)
Answer:
Explanation:
1 false
2 true
3 true
4 false
5 false
6 true
7 false
8 true
9 true
10 false
As wave crash into the coastline with great force, what is the correct order of formation
Answer:
Explanation:
mnk
ALL mutations have an effect on the protein.
A. True
B. False
Answer:
B. False
Explanation:
No; only a small percentage of variants cause genetic disorders—most have no impact on health or development. For example, some variants alter a gene's DNA sequence but do not change the function of the protein made from the gene.
Answer:
False
Explanation:
Only a small percentage cause genetic disorders.
La energía eléctrica de Uruguay ¿proviene principalmente de fuentes de energías renovables o no renovables?
Answer:
Actualmente el país obtiene un 94,5% de la electricidad que necesita de energías renovables, como la eólica, la solar o la hidroeléctrica.
Explanation:
espero que te sirva
Please help does someone know anything about this
Acids are identified by hydrogen or hydroxide?
Answer:
An acid is a substance that donates hydrogen ions. Because of this, when an acid is dissolved in water, the balance between hydrogen ions and hydroxide ions is shifted. Now there are more hydrogen ions than hydroxide ions in the solution. This kind of solution is acidic.
Explanation:
what does a tortoise covering body do for it?
Answer:
Protection
Explanation:
Tortoises, especially babies, can become easy prey. Because of how small they are when they are young and how slow they are when trying to escape it makes them an easy meal. Their shells protect them from anything trying to crush or eat it.
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Have a great day!
define sublimation
Answer:
Explanation:
its where u turn a object in it's solid state directly to gas, without it entering the liquid state
In horses, the allele for a bay coat (brown with black mane, tail, and legs) and the allele for a cream coat can combine to make a
buckskin coat. The allele c is used for bay: CC is used for cream. Buckskin horses have one bay and one cream allele. The
genotype cc makes a buckskin coat, as neither allele is dominant. Cross a bay stallion (father) with a buckskin mare (mother).
How many offspring will have the same phenotypes as the mother.
Please help me
Answer:
100%
Explanation:
By crossing a bay stallion with a buckskin mare, 100% of offspring will have the same phenotypes as the mother (i.e., buckskin mare).
An allele is a gene variant, diploid organisms (like horses) inherit two alleles for a given gene locus, one allele from the mother and another from the father.In complete dominance, the dominant allele completely masks the expression of the recessive allele in heterozygous individuals.In codominance, both alleles are expressed in order to produce a given phenotype.In conclusion, by crossing a bay stallion with a buckskin mare, 100% of offspring will have the same phenotypes as the mother (i.e., buckskin mare).
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the life is very beautiful thing to gift by God. a some are happy. b. some are sad c. some are smile. choose any one
Answer:
i pick C
Explanation:
Because in any situation both good or bad we should smile
Well A and C works hand in hand though
Conservationists help to restore ecosystems. Which activity will positively affect the abiotic conditions of an ecosystem?
A.
Keeping lakes and rivers free of pollution.
B.
Planting new trees to provide food for animals.
C.
Monitoring the ecosystem for bacterial pathogens that can cause illness.
D.
Mating endangered animals in captivity and restoring them to their natural habitat.
To which category does galaxy #2 belong? Why does it belong in this category?
Answer:
mildly category .... if am not wrong
Answer:
Explanation:
Galaxy #2 belongs to spiral. This is because it has a bulge at the centre, a disk as well as the curved arms. Contains both Young and Old stars - contains gas and dust - contains more red giants and red supergiant's than disk - some regular rotation about centre.
What Is Dark Matter?
Dark matter is a form of matter thought to account for approximately 85% of the matter in the world. Dark matter consists of particles that do not absorb, reflect or emit light, so they cannot be detected by observing electromagnetic radiation. Dark matter is material that cannot be directly seen. We know dark matter exists because it affects objects we can directly observe.
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help me !! …………… …….
Origin: lateral third of clavicle, acromion, and spine of scapula. Action: abduction, flexion and extension, medial and lateral rotation of arm * Deltoid Infraspinatus Supraspinatus Subscapularis
Answer:
The correct answer is - Deltoid
Explanation:
Deltoid muscles are thick triangular muscles that help in raising and rotating arm covers shoulder joints. It originates lateral third of the clavicle, inferiorly along the spine of the scapula to the acromion.
Deltoid muscles provide actions that include flexion and medial rotation, abduction, and extension, and lateral rotation at the shoulder joint. Deltoid means triangle or that has three sides as it has three originating sides.
13 POINTS MY DUDES! AND NO LINKS OBVIOUSLY!!!
In a moth population, 47 are brown, 15 are yellow, and 34 are black. What is the approximate probability of a moth being black?
A. 2%
B. 49%
C. 16%
D. 35%
Answer:
D
Explanation:
34/96= 35%
The mathematical rule of three can be used to take probabilities. In the exposed example, the approximate probability of a moth being black is 35% (Option D).
------------------------
Available data:
47 moths are brown15 moths are yellow34 moths are blackThe total number of individuals in this population equals the addition of brown, yellow, and black individuals.
This total number of individuals equals 100% of the population.
So to get the probability of a moth being black, we can just perform a rule of three.
To do it, we need to get the percentage of black individuals in the current population.
96 moths ------------------------- 100% population
34 black moths ----------------- X= (34 x 100) / 96
=35.41 ≅ 35% of the population
The approximate probability of a moth being black is 35%.
----------------------------------
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I really need help, can someone answer for me?
Answer:
there would be more food for the foxes so their population would increase
So it's the first one
Sound waves are mechanical waves in which particles in the meduim vibrate in a direction
parrel to the direction of energy transport
Answer:
the vibration would be south
Explanation:
etc
PLEASE HELP ITS EASY WILL GIVE BRAINLESS CURRENTLY FAILING
Answer:
It should be A and B because Genes are made of DNA.
Explanation:
Which organisms store some of the molecules from food in their bodies 15 points
to use later as a source of chemical energy and building materials?
animals
plants
both plants and animals
none of the above is correct
Not sure but i think its plants
Both plants and animals store some of the molecules from food in their bodies to use later as a source of chemical energy and building materials.
One of the important characteristics of living organisms is metabolism. Living organisms are able to obtain food which is stored as various chemical substances in the body.
This food materials that are stored as chemical substances are later broken down to produce the energy required by the organism to carry out its activities. Both plants and animals store some of the molecules from food in their bodies to use later as a source of chemical energy and building materials.
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which of the following measures to reduce air pollution by automobiles has been implemented in some countries, including the United States?
a) truck transport
b) diesel fuel
c) carpool laws
d) emission testing
Answer:
option d
Explanation:
Hope it helps :)
To reduce Air Pollution by automobiles, Emission Testing has been implemented.
How Air Pollution is caused by Automobiles?
The pollutants produced from vehicle carries toxic gases like Carbon Monoxide, Nitrogen Oxides, Volatile Organic Compounds and Sulphur Dioxide.
Research has shown that an average car can create almost 6 tonnes of pollutants each year.
These effluents released from the vehicles are the main ingredient of smog that causes respiratory problem, skin irritation and in extreme causes cancer.
What is Emission Testing?The Emission testing procedure helps in gauging the car's emission and ability to track the pollutants it releases.
A test can potentially review the levels of pollutants such as CO2, Hydrocarbons, CO, NOx and other such emissions releasing from car.
Different Emission Testing procedures are:
- On-Board Diagnostic inspection
- Acceleration Simulation Mode (ASM) test
- Two Speed Idle test
Once all the test is cleared, the car can be legally registered and is safe for driving.
The driver should maintain the requisite paperwork and if required have to undergo another test in near future.
If the Vehicle could not pass the test:
- The car would be emitting excessive HC or CO above the mentioned standards.
- Unable to collect valid exhaust sample due to leak in the exhaust system or poor engine adjustment.
- OBD emission control components or the Dashboard MIL are malfunctioning.
- The gas cap is not creating a tight seal and could be leaking vapors.
These above issues can be remedied with regular maintenance by undergoing diagnostic test.
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I NEED HELP PLEASE!
Answer:
The phenotypic ratio of this crossing is 9:3:3:1 whereas the genotypic ratio is 1:2:1:2:4:2:1:2:1.
Explanation:
If we cross red color organism with the yellow color organism, the phenotypic ratio of this crossing is 9:3:3:1 whereas the genotypic ratio is 1:2:1:2:4:2:1:2:1. In the F1 generation, all offspring are identical to each other means that all offspring resembles to male parent due to the presence of dominant allele while on the other hand, in the F2 generation, the ratio is 9:3:3:1 in which 9 ratio represents male parent, 1 represents female parent and the middle 3 represents hybrid which is different from their parents.
You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives regular water. After a two-week period, the height is measured.
Which statement correctly describes the difference between cellular respiration and photosynthesis?
A.
Photosynthesis involves chemiosmosis, and cellular respiration doesn’t involve chemiosmosis.
B.
Photosynthesis doesn’t produce any ATP, and cellular respiration produces ATP.
C.
Photosynthesis occurs during the day, and cellular respiration occurs at night.
D.
Photosynthesis creates energy that the plant stores, and cellular respiration utilizes the energy.
E.
Photosynthesis is an anabolic reaction, and cellular respiration is a catabolic reaction.
Answer:
The answer is E.
Explanation:
An anabolic reaction is one that involves the building of complex substances from simple ones and it uses up energy. Photosynthesis is an anabolic reaction because It requires energy.
A catabolic reaction is one that involves the breakdown of complex substances into simpler ones and in the process energy is released. Cellular respiration is catabolic because energy is released during this process.
Answer:
The person is correct
Explanation:
I got it right
Which type of growth can occur only when a population has unlimited resources?
limited
logistic
exponential
negative
Answer:
c. on edge
Explanation:
When resources are unlimited, populations exhibit exponential growth, resulting in a J-shaped curve. The correct answer is c) exponential.
What is the exponential growth curve?Exponential growth curves and logarithmic growth curves are the two different forms of growth curves. In an exponential growth curve, the slope increases steadily over time. A logarithmic growth curve has a steeply increasing slope that gradually flattens out over time.
The exponential growth curve, which has a J-shape, shows a period of time where the results develop rapidly and steadily. It is the reverse of gradual progress. This curve initially climbs gradually before accelerating, which represents multiplied growth.
With exponential growth, a population's growth rate per capita (per person) remains constant regardless of population size, causing the population to expand exponentially as it grows larger. In nature, populations may expand exponentially for a while, but ultimately, their growth will be constrained by the availability of resources.
Exponential expansion happens when resources are unrestricted. Due to the favorable conditions, there are a lot more births as a result of the food excess.
Therefore, the correct answer is c).
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why are plants the start of the food web