Answer:
D) A thermostat switching on an air conditioner when the temperature gets too hot
Explanation:
All other answers choices are negative feedback.
hope this helped!
A thermostat switching on an air conditioner when the temperature gets too hot is an example of positive feedback. Option D is correct.
Positive feedback is a process in which a change in a system causes further changes in the same direction, leading to an ever-increasing effect. In the case of a thermostat, the increase in temperature causes the thermostat to switch on the air conditioner, which cools down the room. This cooling down causes the thermostat to switch off the air conditioner, which then allows the temperature to rise again. This cycle continues until the temperature reaches a desired level.
In negative feedback, a change in a system causes other changes in the opposite direction, leading to a return to the original state. For example, when a herd of buffalo runs away after one of them spots a lion, the other buffalo will also run away, which will reduce the number of buffalo in the herd that are in danger. This will eventually lead to the herd returning to its original state. Option D is correct.
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How is reproduction different than the other five characteristics of living cells?
Answer:
because reproduction is nature gifted and it is the way to increase population but living cells are the cells which keeps us alive
Reproduction differs from the other five characteristics of living cells because of the ability to replicate for continued existence.
The characteristics of living things include -MR NIGER D(acronym to remember)
Movement RespirationNutritionIrritabilityGrowthExcretionReproductionDeathNow Reproduction differs from all the others because while others are processes that organisms need for existence or survival,Reproduction on the other hand is the reason for the continuation of existence of species(creation of a copy).
Without reproduction, Living organisms would go extinct and would not be able to replicate themselves .
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Photosynthesis requires which kind of energy ?
Answer:
Solar energy (light energy)
Explanation:
Plants absorb the energy from the sun along with water,carbon dioxide to photosynthesize and produce their own food (starch,glucose) and oxygen.
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The image shows a vulture soaring over a rocky cliff. The arrows model the different ways energy moves between the sun, atmosphere, and geosphere.
Match each type of energy transfer to the arrows shown in the image. Describe how energy transfer helps the vulture soar above this rocky cliff.
Given what we know about the way energy moves through the Earth, we can confirm that the vulture uses the hot air currents that result from this movement of energy to soar above the cliff.
The energy from the sun travels through the atmosphere, then into the soil where it is absorbed. The soil then radiates the heat back out into the atmosphere.
Given that hot air rises, this radiated heat causes the formation of hot air currents that the vulture then uses to glide upwards in a circular motion.
The vulture planes over the hot air currents with its wings at an angle to climb, it goes higher the further it wishes to travel given that once at the desired height, it glides downward towards its destination.
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Which of the following is not a functional group that can bond with carbon?
а
carbonyl
b
hydroxyl
C
sodium
d
phosphate
Sodium is not a functional group that can bond with carbon (Option C)
A functional group is a combination of atoms in a molecule that is capable of conferring particular chemical and physical properties.The most common functional groups include the carboxylic acids groups (CO2H), carbonyl groups (C=O), alcohol groups (-OH), ester groups (CO2R), and amine groups (NH2).Functional groups are observed along the carbon backbone of the biomolecules.This carbon backbone is made up of chains/rings of carbon atoms with the occasional substitution of an element (e.g., N or O).Learn more in:
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why velocity is regarded as a vector quantity?
Answer:
Because velocity has magnitude and direction, speed is not a vector quantity since it only has magnitude
For example, if a car is moving backwards with a speed of 40m/s
Your velocity is - 40m/s
Speed is 40m/s
Which of the following cells would be found in xylem tissue?
sieve tube members
companion cells
b. tracheids
d. guard cells
a.
C.
Please select the best answer from the choices provided
Α
В
C
D
Answer:
D. guard cells.. this is answer i think..
i need help asap....
what process would allow plant cells to take water into their cells for use in photosynthesis ?
a. Osmosis
b. Diffusion
c. Active Transport
d. Exocytosis
Answer:
B osmosis
Explanation:
please five brainliest if you can, have a great day<3 :)
Answer:
a. Osmosis
Explanation:
Osmosis is the net movement of solvent molecules ,usually water from region of lower solvent concentration to a region of higher solvent concentration through a partially permeable membrane.
Describe the different types of corrections in a scatterplot
is a biosphere is smaller than anecosystem.
Answer:
Yes!
Explanation:
From largest to smallest: biosphere, biome, ecosystem, community, population, and organism. Hope I helped :)
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Pepsin and Trypsin are enzymes. At what pH do they have the highest rate of reaction?
Answer:
It has an optimum pH of about 1.5. Trypsin's optimum pH is about 8.
Explanation:
This active trypsin acts with the other two principal digestive proteinases — pepsin and chymotrypsin — to break down dietary protein into peptides and amino acids. These amino acids are essential for muscle growth, hormone production and other important bodily functions.
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I need help with modeling a carbon cycle, do you mind helping me? :)
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Explanation:
The Carbon Cycle
The element carbon is a part of seawater, the atmosphere, rocks such as limestone and coal, soils, as well as all living things. On our dynamic planet, carbon is able to move from one of these realms to another as a part of the carbon cycle.
Carbon moves from the atmosphere to plants. In the atmosphere, carbon is attached to oxygen in a gas called carbon dioxide (CO2). Through the process of photosynthesis, carbon dioxide is pulled from the air to produce food made from carbon for plant growth.
Carbon moves from plants to animals. 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 decays bringing the carbon into the ground. Some is buried and will become fossil fuels in millions and millions of years.
Carbon moves from living things to the atmosphere. Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants need to get rid of carbon dioxide gas through a process called respiration.
Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas. Each year, five and a half billion tons of carbon is released by burning fossil fuels. Of this massive amount, 3.3 billion tons stays in the atmosphere. Most of the remainder becomes dissolved in seawater.
Carbon moves from the atmosphere to the oceans. The oceans, and other bodies of water, absorb some carbon from the atmosphere. The carbon is dissolved into the water.
Carbon dioxide is a greenhouse gas and traps heat in the atmosphere. Without it and other greenhouse gases, Earth would be a frozen world. But since the start of the Industrial Revolution about 150 years ago humans have burned so much fuel and released so much carbon dioxide into the air that global climate has risen over one degree Fahrenheit. The atmosphere has not held this much carbon for at least 420,000 years according to data from ice cores. The recent increase in amounts of greenhouse gases such as carbon dioxide is having a significant impact on the warming of our planet.
Carbon moves through our planet over longer time scales as well. For example, over millions of years weathering of rocks on land can add carbon to surface water which eventually runs off to the ocean. Over long time scales, carbon is removed from seawater when the shells and bones of marine animals and plankton collect on the sea floor. These shells and bones are made of limestone, which contains carbon. When they are deposited on the sea floor, carbon is stored from the rest of the carbon cycle for some amount of time. The amount of limestone deposited in the ocean depends somewhat on the amount of warm, tropical, shallow oceans on the planet because this is where prolific limestone-producing organisms such as corals live. The carbon can be released back to the atmosphere if the limestone melts or is metamorphosed in a subduction zone.
Which best describes the sex chromosomes in humans?
• A. Males have two different chromosomes.
• B. X Females have one X and one Y chromosome.
• C. Males have two X chromosomes.
• D. Males have two Y chromosomes.
Which answer below is in correct order from smallest (-) to largest (+)
Answer:
the 2nd answer
Explanation:
how do fish obtain oxygen?
a.
from water flowing over their gills.
b.
from water flowing over their fins.
c.
from water flowing over their lungs.
d.
none of the above.
Fish take water into their mouth, passing the gills just behind its head on each side.
I need one paragraph about Cell Energy
Select the correct images
Select the two locations that are best suited for the development of a wind farm.
Third one
Explanation:
Which is located at Left down..
Which of the statements below correctly compares features of plant and animal cells?
Plant cells have a cell membrane, while animal cells have both a cell wall and a cell membrane.
Plant cells have ribosomes only on the rough ER, while animal cells have ribosomes in the cytoplasm.
Plant cells have a large central vacuole, while animal cells have many smaller vacuoles.
Plant cells have chloroplasts but no mitochondria, while animal cells have mitochondria.
Plant cells have a large central vacuole, while animal cells have many smaller vacuoles. Hence option c is correct.
What are vacuole?Vacuole is defined as a region of cytoplasm-free, membrane-lined, and liquid-filled space inside a cell. A membrane-bound cell organelle known as a vacuole. The plant cell's equilibrium depends heavily on the vacuole. It participates in the regulation of cytoplasmic ions, pH, and the control of cell volume and turgor.
Animal cells lack a cell wall, whereas plant cells do. Animal cells lack chloroplasts while those of plants do. Animal cells have many little vacuoles, but plant cells only have one giant vacuole. Animal cells only have a cell membrane, but plant cells have both a cell wall and a cell membrane. Cell walls are used by plants to give the plant structure. Animal cells lack the organelles known as chloroplasts that are present in plant cells.
Thus, plant cells have a large central vacuole, while animal cells have many smaller vacuoles. Hence option c is correct.
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what method did jesus use to lead the rabbis to a clearer understanding of God's plan?
Jesus used the parables to lead the rabbis to a clearer understanding of God's plan.
In christian religion, Jesus used a method of teaching called parables to expatiate a most topics he handled. This was for the better understanding of God's plans.
The parables are defined as the short stories that demonstrates a moral lesson.
A typical example of a parable used by Jesus is the parable of the lost coin.
Here Jesus told a story of a woman that had ten coins and lost one of them. He said that the woman searched carefully until she finds it. she went ahead to call her neighbors to rejoice with her as she has found the lost coin.
In this parable, Jesus passed a clearer understanding of God's plan for a repented sinner. HE said that there is rejoicing in the presence of God over one sinner who repents.
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Environmentalists claim that climate change could lead to major biological change on Earth. Which of the following statements supports the biological predictions related to climate change?
A) Sea levels will fall, causing migration of 50% of the world's human population.
B) Carbon dioxide levels and temperature changes are direct related in the studies.
C) Studies show that atmospheric carbon dioxide has increased over the past 150 years.
D) The distribution of many organisms has already shifted as a result of warming.
Answer: D: The distribution of many organisms has already shifted as a result of warming.
Explanation: I just took the quiz on FLVS
The statement that supports the biological predictions as it relates to change in climate is : ( D ) The distribution of many organisms has already shifted as a result of warming
What is climate change ?Climate change is the long term change in the Average weather conditions of a region, province or territory. Climate change is associated to global warming caused by the activities of man which affects the weather conditions of a given region in the long term.
As the climate continues to change, many organisms begin to redistribute themselves to regions with favourable weather conditions, and this is the biological prediction/effect of climate change on the environment.
Hence we can conclude that The distribution of many organisms has already shifted as a result of warming is the correct statement.
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the middle men get – times more money than he catch fishes
Answer:
the middle men half of times more money than he catch fishes
Explanation:
How do bacteria and archea reproduce most of the time?
A. asexually
B. sexually
C. chemical combustion
D. all 3 equally
Most of the time bacteria and archea reproduce by asexually .
Answer:
Most bacteria and archea reproduce asexually.
Explanation:
In which of these forms does acid precipitation reach the surfaces of Earth?
1. What is likely to be caused by a diet low in both fat and fibre?
A. Constipation and obesity
B. Constipation only
C. Neither constipation nor obesity
D. Obesity only
Answer:
A. Constipation and obesity I think
What happens to particles in matter
when energy or heat increases?
A. they disappear
C. their motion decreases
B. they stay the same
D. their motion increases
Answer: it is D : their motion increases
Explanation: because as heat is increased it causes the particles to gain more kinetic energy making them move faster thus increasing their motion and leading to more successful particle collision .
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what is photosynthesis ??
Answer:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Answer:
The process of making food by plants through the help of sunlight is called photosynthesis
A kilometer is a longer distance than a meter
Answer:
That's true a kilometer is a longer distance than a meter (1,000 times longer)
Explanation:
name grains containing male cell?
Answer:
literally any grain that is pollinator friendly has male and female cells
plants that produce nuts are the biggest example
Dalton’s theory was identified using
light microscope images of atoms.
the experimental results of other scientists.
water vapor and air experiments.
Answer:
Explanation:
Actually it was the experimental results of other scientists. The main stems of the theory was the indivisibility of small spheres (his image) that represented the elements he knew which reacted with other elements.
They seemed to give the same ratios in reactions (definite proportions) and multiple whole number ratios. Look up Lavoisier.
Which describes a difference between solar wind and a geomagnetic storm? Select the three correct answers.
Answer:
Hope it may help you.
Explanation:
The intensity of solar wether changes frequently
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