Answer:
Phosphorus contained in agricultural runoff
Explanation:
The term eutrophication refers to the enrichment of surface water with nutrients. This process is related to human pollution activities.
Eutrophication is the biological process that generates in water by an oversupply of nutrients or organic matter. This matter, mainly compounded with nitrogen or phosphorous, favors the phytoplankton multiplication (microscopic plants growing on the water surface) and other aquatic plants. This overgrowth leads to an enhance in primary productivity. Nitrogenated compounds might come from human and animal wastes, while phosphorated compounds might come from fertilizers and other chemicals used in agriculture, that penetrates the soil and reaches water bodies.
Little by little begin sedimentation is caused by the death of some vegetable organisms that sink in the bottom. These sediments rich in organic matter suffer decomposition in the presence of oxygen.
When oxygen disappears, anaerobic bacteria act and produce fermentation.
On the surface, plants and phytoplankton keep growing, creating a mantle that impedes the light reach deeper areas. The phytoplankton overgrowth on the water surface and the fermentation processes in the bottom originate toxic compounds that damage the animals. Animals die, creating more sediments in the bottom where there are anaerobic conditions.
Decomposition and fermentation processes increase, producing a bad smell.
The result of eutrophication is the stratification of the water mass:
• First superficial layer, the overgrowth of blue-green algae, produces toxins and interrupts the pass of light to deeper areas. The surface then becomes warmer.
• The second layer might have oxygen available for the animals.
• In the third layer, there is no oxygen, so life is impossible for animals or plants.
• In the fourth layer, there are animals and plant remains in the process of sedimentation.
• At the bottom, there are organic matter and anaerobic bacteria in charge of decomposition and fermentation, through which they produce toxic gases and smell.
Field mustard is an annual plant that grows wild in many regions of the world. It has small yellow flowers and is pollinated by insects. Field mustard has to flower and produce seeds to give rise to the next generation. Southern California experienced a severe drought between 2000 and 2004. Plants that flowered earlier reproduced. Those that flowered later died without producing seeds. This led to more early-flowering field mustard plants. This change in population characteristics took only a few generations.
How do you think scientists discovered that the flowering time of the field mustard had changed?
Answer:
Due to early flowering in the mustard plant.
Explanation:
The scientists discovered that the flowering time of the field mustard had changed by observing more mustard plants which produces earlier flowers. The behaviour of the mustard plant change due to the change that occur in the environmental conditions that leads to early flowering in mustard plant. If this early flowering occurs for more generation, then the mustard plant will adopt this type of behaviour in normal environmental conditions that experience by the mustard plant.
PLS HELP. CORRECT ANSWER GETS BRAINLIEST
1. While Deena is watching the news on TV, She hears that there going to be a solar eclipse the next day. The news announcer gives advice on how to view a solar eclipse safely, and describes what is happening when a solar eclipse occurs. What causes a solar eclipse to occur?
The Moon passes between the Sun and Earth.
The Sun, the Moon, and the Earth form a right angle.
Earth and the Moon are on opposite sides of the Sun.
Earth and the Moon are at their farthest distance from the Sun.
Answer:
a)The Moon passes between the Sun and Earth.
Explanation:
Sometimes when the moon orbits Earth, it moves between the sun and Earth. When this happens, the moon blocks the light of the sun from reaching Earth. This causes an eclipse of the sun.
Answer:
The answer is A good luck!
Explanation:
where do all of the cells in the human body come from
Answer:
Every cell in the body originates from a single fertilized egg called a zygote. The zygote divides repeatedly to produce an embryo. These embryonic cells continue to divide, differentiating into all the cell types present in the body of all humans (and other mammals), from a new-born baby to an elderly adult
Answer:
The zygote
Explanation:
I'm not exactly sure what you're talking about, but this is what I found: "Every cell in the body originates from a single fertilized egg called a zygote. The zygote divides repeatedly to produce an embryo. These embryonic cells continue to divide, differentiating into all the cell types present in the body of all humans (and other mammals), from a new-born baby to an elderly adult."
What part of the digestive system first causes chemical changes to food?
A. teeth in the mouth
B. saliva in the mouth
C. enzymes in the stomach
D. enzymes in the small intestine
Answer:
b. saliva in the mouth
Explanation:
saliva contains enzymes that help break down food
Saliva in the mouth causes the first chemical changes in the food. So the correct option is B.
What is saliva?Saliva is a continuously present, viscous, colorless, opalescent fluid in the mouths of humans and other animals. It is made up of amylase, water, mucus, proteins, and mineral salts.
Saliva takes up food particles, bacterial cells, and white blood cells as it moves about in the oral cavity. Every day, a person's mouth excretes one to two liters of fluid.
The total amount of saliva is produced by three primary pairs of salivary glands as well as numerous smaller glands that are dispersed across the has included of the cheeks, lips, tongue, and palate.
The mouth naturally produces small amounts of saliva on a regular basis, but the introduction of food, or even just the scent or idea of it, will significantly enhance saliva production.
Salivation serves a variety of purposes. In order to aid in speaking and transform foodstuffs into a liquid or semisolid material that can be tasted and taken more readily, it primarily lubricates and moistens the interior of the mouth.
Therefore the correct option is B.
Read more about saliva, here
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what might happen to the finch populations after millions of years?
Answer:
please give me brainlist and follow
Explanation:
The finches of the differing islands would evolve to match their habitat so much that the two may noteven be alike.
Answer:
Finch populations will start to dwindle.
Explanation:
Finch's like all animals will start the process of evolution themselves becoming new types of subspecies.
How many of each nitrogenous base is in your template?
Answer:
four nitrogenous bases
Explanation:
Helped by none other than the #QUEEN herself #DRIPPQUEENMO
Answer:
it kinda hard to answer so use
G
O
O
G
L
E
Explanation:
what is the relationship between a protein the cell and DNA?
a. DNA is produced by protein which is produced in the cell
b. dna controls the production of protein in the cell
c. protein is composed of DNA which is produced in the cell
d. a cell is composed of DNA and protein
Answer:
Cells contain DNA that controls the production of proteins. (2) DNA is composed of proteins that carry coded information for how cells function. (3) Proteins are used to produce cells that link amino acids together into DNA. (4) Cells are linked together by proteins to make different kinds of DNA molecules.
Explanation: Hope this helps!! :)
Select the correct answer.
A construction company wants to trap pollutants in runoff at
its sites. What should the company do?
© A. Practice conservation tillage at the sites.
B.
Release beneficial insects, such as spiders and ladybugs, at the sites.
C.
Plant grass and lay straw at the sites.
D.
Plant trees at the sites.
Answer:
A
Explanation:
I believe the answer is A because conservation tillage reduces erosion & runoff but I'm not 100% sure.
How has the human population changed over time?
A. It has slowly decreased
B. It has slowly increased
C. In recent years it has exponentially increased
D. It has remained the same for thousands of years
Answer:
the answer is letter B..
which of the following correctly pairs the reproduction with cell the process or processes that are directly involved
1. A. asexual reproduction; mitosis and meiosis
2. B. asexual reproduction; meiosis
3. C. sexual reproduction; mitosis and budding
4. D. sexual reproduction; meiosis
Answer:
d
Explanation:
List 3 main types of weather
ering
True or False: Births, deaths and migration do not factor into changing the size of a population...
Answer:
False I believe
Explanation:
The quantity of matter in an object is a measure of its:
matter
inertia
mass
atoms
Answer:
the answer is C or mass
Explanation:
Answer:
MAss
Explanation:
Translation practice
Answer:
mRNA (remaining blank boxes): AAU GUC CAU UAC GUA AUU GGC UGA
Amino Acid: Asn Val His Tyr Val Ile Gly STOP
Explanation:
Translation turns the mRNA code from transcription into amino acids that form proteins that help with functions/qualities of one's body.
Here is a model of Earth's yearly orbit around the Sun. In this model, the names of the seasons apply only to the northern hemisphere, Seasons in the Northern Hemisphere Equinox March 20 or 21 Solstice June 20,21, Spring Winter Summer Autumn Solstice December 21 or 22 Equinox s September 22 or 23 Examine the model, and think about how it would be different for the southern hemisphere. What causes the southern hemisphere to experience summer? A. Earth's north pole is tilted toward the Sun. B. Earth's axis and its equator are at different angles. C. Earth's axis and its orbit plane are at different angles. D. Earth's south pole is tilted toward the Sun.
Answer:
D
Explanation:
Answer:D
Explanation:
Please help me if you know the answer please
What is the full function of the inner ear.
Answer:
The inner ear is primarily responsible for balance, equilibrium and orientation in three-dimensional space. The inner ear can detect both static and dynamic equilibrium. Three semicircular ducts and two chambers, which contain the saccule and utricle, enable the body to detect any deviation from equilibrium. The inner ear (also called the labyrinth) contains 2 main structures — the cochlea, which is involved in hearing, and the vestibular system (consisting of the 3 semicircular canals, saccule and utricle), which is responsible for maintaining balance.
hope this answer helps you......
The external openings of the airway include which of the following features? (multiple answers)
mouth
lungs
alveoli
nose
diaphragm
Answer: mouth, nose
Explanation:
I need help with this question
Answer:
more complex cell
Explanation:
hope this will help
What is the meaning of inland?
Not on the oustide/coast. Inside a country.
how is support attained in herbaceous plant
Answer:
HERBACEOUS PLANTS• Support is provided by the turgidity of parenchyma & collenchyma cells & xylem tissues. Parenchyma cells are filled with water turgid• Collenchyma cells have unevenly thickened cellulose walls which provide support in stem & the midrib of the leaves.
hope this answer helps you.....
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Which of the following describes the location of the polar climate zone?
1. Between the tropical and the temperate zones
2. Farthest from the equator
3. From away from the north pole and south pole
4. Closest to the equator
Answer:
closest to the equator because the equator divides our planet into the northern and southern hemisphere and is located at 0° latitude but halfway line between the North and South Pole which would be near the more arctic areas
Answer:
a
Explanation:
Cancer cells are developed through a malfunction within the cell cycle. Which
point of the cell cycle would have the highest risk of cancer if it malfunctioned or
did not work properly? *
O
Interphase
Mitosis
Meiosis
Cytokinesis
Answer: Interphase
Explanation:
amino acids come from which type of organic molecule?
Answer:
QUESTION:
amino acids come from which type of organic molecule?
ANSWER:
Proteins
Proteins are polymers made up of nitrogen-containing monomers called amino acids. An amino acid is a molecule composed of an amino group and a carboxyl group, together with a variable side chain.
Explanation:
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Answer:
PROTIENS............... i think.
Explanation:
What amazing adaptation does the snowshoes hares have?
How does this adaptation help it to survive or reproduce?
Answer:
Snowshoe hares have an interesting adaptation that helps protect them against predators. Depending on the season, their fur can be a different color. During the winter, snowshoe hares are white, which helps them blend in with the snow.
Explanation:
hey, you ok?
Scientists have observed that new crust, such as mid-ocean ridges, is formed where two plates are moving away from each other. Based on this observation and the data on the maps, where do you suspect that old crust is destroyed and recycled? Provide three specific locations on the map where you think this process is occurring
Answer:
Old crust is destroyed at boundaries where two plates are moving toward each other, or converging. Specific examples include the Australian and Pacific plates, the Caribbean and Cocos plates, and the southwest corner of the North American plate and the Pacific plate.
Explanation:
Explain what would occur if the population of an animal such as a beaver, changes the environment and can increase the number of individuals in that area. In other words, explain how a change to an environment can cause an increase in an animal population.
Your answer:
1.)Low tide is the best feeding time for land predators such as sea gulls.
True
False
2.)Plants are not part of food chains.
True
False
3.)
Both currents and tides are predictable patterns of movement in water.
True
False
4.)
The main benefit of an upwelling is that it
creates strong tides in coastal regions
increases the salinity of the water in an area
brings new nutrients into an underwater region
wipes out entire ecosystems, allowing for secondary succession
5.)Which of the following is true of brackish water?
The salinity of the water can vary with the tides.
There is usually more fresh water than salt water.
Very few organisms can survive in brackish waters.
It is most common in the deepest region of the ocean.
6.)A high tide will occur
usually only once in a 24-hour period
only in bodies of water close to the moon
on both sides of the earth at the same time
when proximity to the sun makes the days longer
7. Brackish water is most commonly found in
seas
rivers
oceans
estuaries
8.)All of the following are characteristics of the blue crab EXCEPT
it has no natural predators
blue crabs often feed on each other
it can adapt to varying levels of salinity
it migrates to cooler temperatures as it ages
9.)Unusual weather can change the tides.
True
False
10.)Black sand can be found when
tides are particularly high
sediment contains volcanic ash
local residents prefer it to light sand
all the sand is washed away from the beach
11.)Which of the following is a benefit of inhabiting an estuary?
The water levels are consistent.
The salinity levels are usually stable.
There are fewer strong ocean currents.
Very few predators can survive in brackish water.
12.)All of the following can influence tides EXCEPT
winds
hurricanes
heavy rains
the shoreline
13.)All of the following influence tides EXCEPT
the sun
the moon
the air temperature
the rotation of the earth
14.)The organisms that can tolerate the most time out of water would live in the
spray zone
high-tide zone
middle-tide zone
low-tide zone
15.)When the pull of the moon is strongest, tides will be lowest.
True
False
Answer:
1) False 2)True 3)True 4)brings new nutrients into an underwater region 5)There is usually more fresh water than salt water 6)on both sides of the earth at the same time 7)oceans 8)it can adapt to varying levels of salinity 9)True 10)local residents prefer it to light sand 11)The water levels are consistent. 12)winds 13)the moon 14)middle-tide zone 15False
What is the relationship between DNA mutations and the disorders? Disorders:Hemophila,Beta thalassemia, and Sickle Cell Disease
Answer:
disorders are caused by mutations of these genes
Explanation:
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PLEASE WRITE A SUMMARY ABOUT THE LAW OF UNIVERSAL GRAVITATION
Answer:
When NASA sends rockets into space, they have to contend with a lot more than just astronaut training, fuel loads, and an overall mission objective. The astrophysicists who plan space travel must also contend with fundamental laws of physics. Chief among these is Sir Isaac Newton’s law of universal gravitation.
Explanation:
