Answer:A) Phytoplankton populations will increase as nitrogen availability increases at the surface.
Phytoplankton populations will increase as nitrogen availability increases at the surface. So, the correct option is (A).
What is Nitrogen cycle?The nitrogen cycle is defined as the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates in atmospheric, terrestrial and marine ecosystems where nitrogen is transformed through both biological and physical processes.
The steps which are involved in this process:
Nitrogen fixation.Assimilation.Ammonification.Nitrification.Denitrification.Dissimilatory nitrate reduction to ammonium.Anaerobic ammonia oxidation.It is a repeating cycle of processes during which nitrogen moves through both living and non-living things such as the atmosphere, soil, water, plants, animals and bacteria. In order to move to different parts of the cycle, nitrogen must change form. In this cycle , the phytoplankton increases the nitrogen availability.
Thus, Phytoplankton populations will increase as nitrogen availability increases at the surface. So, the correct option is (A).
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Which of the following will not reduce water scarcity?
A.Install low-flow shower heads.
B.Use car washes that recycle water.
C.Take more baths instead of showers.
D.Wash dishes in a fully loaded dishwasher.
The following will not reduce water scarcity "Take more baths instead of showers." Option C. This is further explained below.
What is water scarcity?Generally, Water scarcity can refer to scarcity in availability owing to the physical scarcity of water due to institutions' inability to assure a consistent supply.
In conclusion, taking showers does not consume more water than baths.
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After receiving a stimulus, the _____ send(s) signals to the appropriate areas of the body.
A. sensory receptors
B. integrating center
C. effectors
Answer:
B. integrating center
Explanation:Answer:
The integrating center, generally a region of the brain called the hypothalamus, signals an effector (e.g. muscles or an organ ) to respond to the stimuli. Positive feedback enhances or accelerates output created by an activated stimulus.
Answer: Sensory receptors
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Explanation:
If all of the trees in the area were cut down, the energy supply of which population would be most directly affected
How many millimetres (equivalent depth) of water are
contained in a soil profile 1 metre deep if the mass water
content of the upper 400 mm depth is 15% and that of the
lower 600 mm is 20%. The bulk density in the upper layer is
1300 kg m- and in the lower layer is 1500 kg m-?. Assume Pw
= 1000 kg m’How much water does the soil contain (in
cubic
metres) per 1.5 hectares of land?
ri
The equivalent depth of water in the soil is 180 mm of water and the volumetric water content of soil is 3870 cubic meter/ 1.5 hectare of soil.
What is the formula to calculate the equivalent depth of water in a soil?The equivalent depth of water in a soil is calculated using the formula below:
equivalent depth of water = water content × depth of soilThe depth of soil profile 1 = 400 mm
The depth of soil profile 2 = 600 mm
Equivalent depth of water in the soil = 15% × 400 mm + 20% × 600 mm
Equivalent depth of water in the soil = 60 mm + 120 mm = 180 mm
Therefore, the equivalent depth of water in the soil is 1800 mm of water.
The volumetric water content of the soil is calculated using the formula below:
Volumetric water content = water content × bulk density of soil/density of water × height of soilHeight of soil profile 1 = 0.4 m
Height of soil profile 2 = 0.6 m
Volumetric water content of soil profile 1 = 15% × 1300/1000 × 0.4 m = 0.078 cubic meter/square metre of soil
Volumetric water content of soil profile 2 = 20% × 1500/1000 × 0.6 m = 0.18 cubic meter/square metre of soil
Sum of volumetric water content of soil = 0.078 + 0.18 = 0.258 cubic meter/square metre of soil.
1 hectare = 10000 square metre
Thus, 1.5 hectares = 15000 square metre
Volumetric water content of soil = 0.258 × 15000 cubic meter/ 1.5 hectare of soil
Volumetric water content of soil = 3870 cubic meter/ 1.5 hectare of soil
Thus, the equivalent depth of water in the soil is 180 mm of water and the volumetric water content of soil is 3870 cubic meter/ 1.5 hectare of soil.
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PLS HELP!!! Why are many ecologists concerned that polar bears may not be able to adapt to global warming?
Because climate change is happening too rapidly for bears to adapt fast enough.
Their fur is too white to camouflage themselves from land prey.
Because polar bears cannot change their eating habits. There is too much
competition from grizzly bears for them to compete for food sources.
Answer:
A. because climate change is happening too rapidly for the bears to adapt fast enough
Explanation:
How can an invasive species be a
danger to an ecosystem?
A. They can out compete native species for
resources.
B. They have a significantly large effect on the
ecosystem.
C. They are not as attractive as native species.
Answer:
a
Explanation:
Invasive species can change the food web in an ecosystem by destroying or replacing native food sources. The invasive species may provide little to no food value for wildlife. Invasive species can also alter the abundance or diversity of species that are important habitat for native wildlife.
Answer: A. They can out compete native species for resources.
What is mRNA?
A. a snippet of the nuclear envelope
B. a transcript of information from the ER C. a piece of DNA that has broken off
D. a transcript of information from DNA
Answer:
D
Explanation:
mRNA is gotten from the transcription of DNA molecules that form the Euchromatin.
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1. Suppose the frequency of the dominant allele in a population is 75%. What is the frequency of the recessive allele?
25%
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___ energy uses steam from large underground reservoirs of heated water
Answer:
GEOTHERMAL POWER PLANTS use steam to produce electricity. The steam comes from reservoirs of hot water found a few miles or more below the earth's surface.The steam rotates a turbine that activates a generator, which produces electricity.
Explanation:
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Reducing "Heat Lost"
1. Apply Concepts The adult seal has a layer of blubber, while her pup has dense fur. How do these adaptations reduce heat loss? Which specific variable(s) are
involved?
neglected tropical diseases and the causative agent
Someone who actually knows please.
Question:9. What type of weather front would be responsible for the following forecast: “A period of heavy rain within the next 24 hours followed by warmer temperatures. Thunderstorms and possibly thundersnow from the period of 24 to 30 hours from now with temperatures dropping by 20-25˚ F and barometric pressure dropping by 15-20 mb. Snow beginning 30-36 hours from now, accumulation of 10-13 inches possible. Cooler temperatures and clear skies in 2 days.”
The type of climate front would be responsible for the forecast is a warm front followed by a cold front.
Hot frontA warm front has warm, moist air behind it. This warm air rises above the cold air because it is less dense and forms clouds along the front. As the warm front approaches, there is a greater drop in pressure and cloudiness, the temperature remains constant or rises slowly, unless it drops a little because of the rain.
Cold frontIn a cold front, warm air is pushed out and replaced by cold air. As in the case of the warm front, the vertical structure of the hot air will determine the reactions with reference to cloudiness and precipitation. As a common cold front approaches there is heavy rain and there may be strong gusts of wind or violent storms. With the passage of the front, there is an increase in pressure, a sudden and large drop in temperature, an increase in the strength of the wind and a variation in its direction.
Whit this information ,we can conclude that the type of climate front would be responsible for the forecast is a warm front followed by a cold front.
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Describe the relationship between immunity (Passive and Active immunity) and vaccines. // (Please answer with full sentences!!)
Answer:
Active immunity occurs when our own immune system is responsible for protecting us from a pathogen. Passive immunity occurs when we are protected from a pathogen by immunity gained from someone else.
Explanation:
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which of the following statement is true of signal molecules
Removing pathogens and other substances from tools or surfaces is
a. Fumigation
b. Decontamination
c. Extermination
d. Promoting growth of bacteria
Answer:
B is the answer
Explanation:
answer on top
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Part F
How could you increase the total energy of the spring-and-weight system?
Why do birds fly to live?
Answer:
in order to escape from predators or to catch prey
Answer:
They fly because they need food
Explanation:
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Today, the vast majority of plants species belong to which
the angiosperms
the seedless vascular plants
the non-vascular plants
the gymnosperms
the gametophytes
Answer:
The angiosperms
Explanation:
Angiosperms are flowering plants. This is by far the most diverse group of plant species currently on Earth. Seedless vascular plants are things like ferns. Non-vascular plants are short and live in damp areas, like mosses. Gymnosperms are pine trees and related species, and gemetophytes isn't a group of plants, but part of the reproductive cycle of plants.
Answer: th gymosperms.
Explanation: I took a quiz on this yesterday !
Describe the role of roots in plant support.
Answer:
Support the plant.
Explanation:
Long answer:
Holds the plant in the ground/ soil.
Provides nutrients and water from the dirt, to the stem.
Which basic function of life is demonstrated by a single-celled organism using cilia, flagella, or pseudopodia?
O A growth
OB. movement
O C. homeostasis
D. response to stimuli
Answer:
C. Homeostasis
Explanation:
Every organism needs to regulate it's internal environment.
What is the function of spines on cacti
The spines of the cactus have several functions, which are the following:
To defend them from possible predators: inside the body of the plants there is a great deal of water; if herbivores could access it, these plants would not survive.
To provide them with shade: it is true that not much, but it is enough so that the loss of water by evaporation is minimal.
Reflect sunlight: many species have white spines.
The sequence of the mRNA that would result from transcribing a DNA template strand with the bases TACGCTAAT would be
The sequence of the mRNA that would result from transcribing a DNA template strand with the bases TACGCTAAT would be AUGCGAUUA.
What is transcription?Transcription is the first stage of gene expression in which mRNA sequence is produced from a DNA template.
During transcription, the following applies to the DNA molecule being transcribed:
Adenine base (A) is transcribed into Uracil (U)Guanine base (G) is transcribed into Cytosine (C) and vice versa. Thymine base (T) is transcribed into Adenine (A)Therefore, the sequence of the mRNA that would result from transcribing a DNA template strand with the bases TACGCTAAT would be AUGCGAUUA.
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Which of the following statements is true?
Blood glucose levels are controlled by the digestive system.
Damage to the kidneys will cause a buildup of waste in the body.
Oxygen is dropped off and picked up by blood vessels in the heart.
Digestion and breathing is controlled by the cerebrum.
Answer:
A for sure
Explanation:
Do researchers agree that sugar is linked to numerous diseases like cancer and diabetes? Why or why not?
Answer:
Sustained high levels of sugars, as is found in diabetics, damages our cells and now is shown that can also increase our chance to get cancer: The dose makes the poison as Paracelsus said. It is well known that obesity is a leading cause of diabetes, a disease where the body fails to control blood sugar levels.
Explanation:
what describes the genetic orders such as alkaptonuria and albinism.
Alkaptonuria (AKU) is a rare disorder of autosomal recessive inheritance. It is caused by a mutation in a gene that results in the accumulation of homogentisic acid (HGA). Characteristically, the excess HGA means sufferers pass dark urine, which upon standing turns black. This is a feature present from birth.
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Water has many of its properties and can act as a major liquid in our bodies due to its high specific heat. However, if water had a LOW heat capacity, its ability to serve as a liquid to maintain homeostasis would be altered. A student makes several claims about the impact the altered heat capacity would have on its properties. Which of these claims would NOT be supported by the change in specific heat capacity of water?
The claim which would not be supported by the change in specific heat capacity of water include reduction in body temperature and dehydration.
What is Specific heat capacity?This is defined as the quantity of heat needed to raise a substance's temperature by 1 degree Celsius.
If water has a low specific heat capacity then the body temperature will increase which will lead to an increase in dehydration.
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13. The diagram at right shows one position of the earth as it makes its way around the sun.
Which locations are experiencing winter?
A)
B)
C)
D)
E)
14. At which location would a person experience the longest number of daylight hours?
A)
B)
C)
D)
E)
Answer:
B
Explanation:
during winter earth become the nearest of center
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Name:-Subham
Gender:-Male
Age:-19
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How's life & what's ur favourite x song, if you have one?
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Inside the refrigerator, Trey finds 17 spoiled and expired food items. Four items are condiments or sauces, two are baked goods, and five are vegetables. The rest of the items are dairy. What percentage of the food waste were lost dairy items?
35%
24%
11%
6%
The percentage of the food waste were lost in dairy items is 35%. The correct option is A.
What are dairy items?Foods derived from milk are referred to as dairy or milk products, or lacticinia. The cow, water buffalo, nanny goat, and ewe are the most popular dairy animals.
Dairy products include staples from Western grocery stores including yoghurt, cheese, and butter.
Milk and any dish manufactured from milk, such as butter, cheese, ice cream, yoghurt, condensed and dried milk, are both considered dairy products.
The product losses = 17 - (4 + 2 + 5) = 6
So, the percentage = 6/17= ~35%
Thus, the correct option is A.
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In order for some molecules to move in and out of the cell, channels are embedded in the cell membrane. What compound forms these channels? A. protein B. fats C. lipid
Answer:
A protein
Explanation:
Proteins make up the second major chemical component of plasma membranes. Integral proteins are embedded in the plasma membrane and may span all or part of the membrane. Integral proteins may serve as channels or pumps to move materials into or out of the cell.
Answer: A protein
Explanation: