Answer:
B
Explanation:
Ms,Biswas made me do this mate (PAIN)
Answer:
B - Carbon normally has four covalent bonds.
Explanation:
Which part of the cell control the cell activities
Answer: The answer would be nucleus.
Explanation:
The nucleus is well known for the command center. That’s how you get the answer.
Answer:
the nucleus
Explanation:
How to prevent tuberculosis?
Answer:
1.Take all of your medicines as they're prescribed, until your doctor takes you off them.
2.Keep all your doctor appointments.
3.Always cover your mouth with a tissue when you cough or sneeze. ...
4.Wash your hands after coughing or sneezing.
5.Don't visit other people and don't invite them to visit you.
U should have vitamins a c and e every day
Cover ur mouth when u sneeze
What is the evidence for evolution?
Answer:
foills
Explanation:
provide solid evidence that organism from the past are not the same as found
Question 5
is to the Calvin cycle.
Chlorophyll is to the light reactions as
O NADP+
O carbon dioxide
O ATP
O ATP synthase
O RuBP
Which level of organization is best represented by the liver?
Answer:
Organ level– an organ is a structure composed of at least two different tissue types that perform a specific function within the body. Examples include the brain, stomach, and liver. Complex functions begin to emerge at this level.
Explanation:
HELP 50 POINTSSSSSSSSSS
Which graph best represents the relationship between sustainability and biodiversity?
Answer:
c
Explanation:
hope this helped
Which is an example of matter cycling through the bodies of living things?
A. Whales swimming in the ocean
B. Whales eating plankton
C. People visiting the aquarium
D. Plankton moving with the tide
Answer: B whales eating plankton
Answer: I would say B. whales eating plankton
Explanation: Whales eating plankton causes the plankton to travel through the digestive tract and be converted to energy, so that answer would probably be your best bet.
Answer:
b
Explanation:
. What type of
biomolecule contains the code for making helicase?
Answer:
DNA helicase
Explanation:
DNA helicase belongs to the class of biological molecules known as enzymes, which are biological catalysts. hope that helps love!
What happens to the energy in detritus?
Answer:
detritus, in ecology, matter composed of leaves and other plant parts, animal remains, waste products, and other organic debris that falls onto the soil or into bodies of water from surrounding terrestrial communities. microorganisms (such as bacteria or fungi) break down detritus, and this microorganism-rich material is eaten by invertebrates, which are in turn eaten by vertebrates. many freshwater streams have detritus rather than living plants as their energy base.
Explanation:
What is a reasonable action that provides safer water for communities?
Answer:
1.Improve sanitation facilities by providing toilets and latrines that flush into a sewer or safe enclosure.
2.Promote good hygiene habits through education. ...
3.Implement rainwater harvesting systems to collect and store rainwater for drinking or recharging underground aquifers.
Why are plants unable to grow at the bottom of lakes ?
Answer:
I think its because of the water pressure
Explanation:
Answer:
I'm guessing that it's because there isn't enough sunlight at the bottom of a lake. The water reflects light, and plants need enough sunlight since they use photosynthesis to get their energy.
how has paraquat stopped the algae from making atp nadph and sugars
Answer:
This is by disrupting the mechanisms of photosynthesis.Paraquat is an herbicide. A photosynthesis inhibiting herbicides. In the light dependent reaction, It acts as oxidizing agent by accepting electrons from Photo system I. and lose these electrons to oxygen molecules which becomes oxidized.
Therefore, disrupting the electron transport chain.With the electron transport chain disrupted, PMF is inhibited, electrochemical gradients for generating energy for ATPs synthesis, by ATPase synthase enzyme is blocked.
Therefore, ATPs synthesis is prevented. With this, Calvin Cycle is blocked, so no CHO id formed. With lack of electron transport chain, NADPH will not be formed. .
Explanation:
Explain the unique bonding properties of carbon.
Carbon , hence overcomes this difficulty by sharing its four valance electrons with other atoms of carbon or with atoms of other elements.
What do you mean by valence electrons?A valence electron is an electron in the outer shell associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed.
Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.
For neutral atoms, the number of valence electrons is equal to the atom's main group number. The main group number for an element can be found from its column on the periodic table.
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Please help! 100 points! Only answer if you know :)
What are some ways that the nitrogen cycle overlaps with or influences the oxygen and carbon cycles?
Are any of these interactions between the cycles positive?
Are any negative?
What about when the nitrogen cycle is thrown off balance by the Haber-Bosch process and others like it?
How can that influence the oxygen and carbon cycles?
Are there other cycles involved that have not been mentioned in this question?
What does this discussion suggest about the nature of the Earth as one large system?
Answer:
1. Nitrification occurs when soil microbes convert ammonium into nitrate. Much of the overlap between the carbon cycle and the nitrogen cycle occurs in the soil, in processes conducted by soil microbes. Microbes break down nutrients, build new compounds for their own growth, and eventually die.
The second question im not sure sorry- the positive and negative one ;(
3. Many human activities have a significant impact on the nitrogen cycle. Burning fossil fuels, application of nitrogen-based fertilizers, and other activities can dramatically increase the amount of biologically available nitrogen in an ecosystem. As nitrogen makes up 78% of the atmosphere, there is no shortage of it – it just isn't in a form plants and animals can use.
4. Carbon makes its way through living things as carbon-based compounds, like energy molecules, fats and proteins, eventually cycling its way back into the atmosphere. Nitrogen is mainly found in the atmosphere as well and enters the ecosystems as nutrients for plants. Water, nitrogen and carbon cycles. Carbon moves from the atmosphere and back via animals and plants. Nitrogen moves from the atmosphere and back via organisms. Water moves on, above, or below the surface of the Earth.
5. Carbon cycle, Nitrogen cycle, Nutrient cycle, Oxygen cycle, Phosphorus cycle, Sulfur cycle, Rock cycle, Water cycle.
6. Wind, water, and ice erode and shape the land. Volcanic activity and earthquakes alter the landscape in a dramatic and often violent manner. And on a much longer timescale, the movement of earth's plates slowly reconfigures oceans and continents. Each one of these processes plays a role in the Arctic and Antarctica.
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. Earth's surface is the only habitat available to the human race. Understanding the processes by which that habitat has been created and continually altered is important to determine the causes of environmental degradation.
What are alien species?
Can someone please help me out here? Thanks in advance!
Answer:
Oxygen and carbon dioxide
Explanation:
Those are the two gases that are needed for us to live and are mostly present in the atmosphere and our bodies
Answer:
c !
Explanation:
F. Answer the following questions in brief.
1. Why should we use fossil fuels judicially?
3. Define the term 'fossil fuel. Give two examples.
4. How can we conserve fossil fuels?
5. What is calorific value of a fuel?
6. What are conditions required for the formation of fossil fuels?
2. Give full form of CNG. Why is it preferred over other fossil fuels?
1. fossil fuels should be used judiciously as they can be exhausted if used excessively and will take time to replenish
2. fossil fuels are fuel formed by natural processes such as decomposition of dead organisms .
3. They can be easily exhausted
4.The calorific value of a fuel is the quantity of heat produced by its combustion i.e at constant pressure and under “normal” (standard) conditions (i.e. to 0 degree C and under a pressure of 1,013 mbar).
5. COMPRESSED NATURAL GAS . CNG preferred than fossil fuel because it produce greenhouse gases upon combustion, it is a more environmentally clean alternative to other fossil fuels
Answer:
1. fossil fuels should be used judiciously as they can be exhausted if used excessively and will take time to replenish
2. fossil fuels are fuel formed by natural processes such as decomposition of dead organisms .
3. They can be easily exhausted
4.The calorific value of a fuel is the quantity of heat produced by its combustion i.e at constant pressure and under “normal” (standard) conditions (i.e. to 0 degree C and under a pressure of 1,013 mbar).
5. COMPRESSED NATURAL GAS . CNG preferred than fossil fuel because it produce greenhouse gases upon combustion, it is a more environmentally clean alternative to other fossil fuels
Explanation:
SOMEONE PLEASE HELP ME :(
Neurotransmitters can be blocked which
disrupts the ____ impulse from traveling
through the target neuron.
A. synthetic
B. electrical
C. somatic
D. chemical
what is the meaning of humidity
Answer:
Explanation:
The concentration of the water vapour present in the air
what is 20 degrees Celsius in Fahrenheit
Answer:
68 degrees Fahrenheit
Explanation:
divide by 5 (20/5=4)
multiply by 9 (4 x 9= 36)
add 32 (36+32=68)
Answer:
68 degrees F
Explanation:
20 x 1.8 + 32
20= C
(multiply C by 1.8 then add 32!!)
Study the structure of the plant growing on the rock in the image. Based on its structure, to which group does the plant belong?
A.
bryophyte
B.
gymnosperm
C.
pteridophyte
D.
angiosperm
How are the reproductive cycles of a fungus and a pteridophyte similar?
Answer:
a
Explanation:
An important example of a "positive feedback loop" in the polar climate system is:
a.Scientists in remote places check on each others instruments.
b.Warming ocean water opens new areas for marine species.
c.Warmer winters cause more plant growth, providing more food.
d.Sea ice melt opens more ocean to sunlight, causing more melt.
Answer: D
Explanation:
A positive feedback loop occurs in nature when the product of a reaction leads to an increase in that reaction.
In choice D melting of sea ice opens more ocean to sunlight which causes more ice to melt which demonstrated a positive feedback loop.
The significant example of a positive feedback loop in the climate system i.e. polar should be at the time when the ice of the sea should be melt that there should be more ocean that results in more melting.
The following information related to the positive feedback loop is:
If the direction varies so it should result in an extra change in a similar direction.Like if we take an example that if there is an increase in the substance concentration so it results in the feedback that generated the continued increase in the concentration.Therefore we can conclude that option d is correct.
All other options seem incorrect.
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The soft and green stems found in flowers are called:
Answer:
sepals aka calyx
Explanation:
sapelis lowest part on flowers which covers the flower and from which pedicel is produced.
Which is a leading theory for the formation of fossil fuels?
Answer:
The most generally accepted explanation for fossil fuel production is that, over time, fossil fuel was formed from declining organic matter. Organisms died and were buried in the earth millions of years ago. The carbonaceous substances within the humans, subjected to the high temperature and pressure below the earth's surface, were converted into types of fossil fuel such as coal and oil.
how to ecosystem services affect human sustainability
Answer:
Ecosystem services play important role in human sustainability. Ecosystem services include provisioning,regulating, supporting, and cultural.
Provisioning include production of food and water which is one of the essential requirement for human survival and provided by ecosystem in the form of plants or other animals. No food means no human life.
Regulating may include the control of disease and climate.Humans at different regions are susceptible to particular temperature and diversity in Climate provide required atmospheric condition for human survival. Climatic changes causes global warming which bring many diseases and temperature fluctuations that affect human sustainability. Diseases decreases human population and affect human susceptibility so ecosystem controls the diseases that increases chance of human survival. More diseases with no medicine may result into high mortality rate.
Supporting, such as oxygen production and nutrient cycles are important factors that support human sustainability because nutrients provide energy to humans to do work and oxygen is must for their living.
Cultural involve recreational and spiritual benefits. Recreational and spiritual benefits include regulation of physical and mental health and social interaction with other people that keeps a human healthy and happy for living a good life.
Hence, ecosystem services promote and affect human sustainability.
What is a DNA probe?
Answer:
In molecular biology, a hybridization probe is a fragment of DNA or RNA of variable length which can be radioactively or fluorescently labeled. It can then be used in DNA or RNA samples to detect the presence of nucleotide substances that are complementary to the sequence in the probe.DNA probes are stretches of single-stranded DNA used to detect the presence of complementary nucleic acid sequences (target sequences) by hybridization. DNA probes are usually labelled, for example with radioisotopes, epitopes, biotin or fluorophores to enable their detection.
spanish
En biología molecular, una sonda de hibridación es un fragmento de ADN o ARN de longitud variable que puede marcarse de forma radiactiva o fluorescente. Luego puede usarse en muestras de ADN o ARN para detectar la presencia de sustancias nucleotídicas que son complementarias a la secuencia en la sonda. Las sondas de ADN son tramos de ADN monocatenario utilizados para detectar la presencia de secuencias complementarias de ácido nucleico (secuencias diana) por hibridación Las sondas de ADN generalmente están marcadas, por ejemplo, con radioisótopos, epítopos, biotina o fluoróforos para permitir su detección.
Explanation:
Answer:
Explanation:
DNA probes are stretches of single-stranded DNA used to detect the presence of complementary nucleic acid sequences (target sequences) by hybridization. DNA probes are usually labelled, for example with radioisotopes, epitopes, biotin or fluorophores to enable their detection.
Are bats blind?Non scientific or scientific question?
Answer:
No, bats are not blind. Bats have small eyes with very sensitive vision, which helps them see in conditions we might consider pitch black. They don't have the sharp and colorful vision humans have, but they don't need that.
Explanation:
Assignment 2
1. In a tabular form, outline the functions of the following parts of the human respiratory
system
a. Nasal passages
b. Nasal hair
C. Mucus membrane
d. Pharynx
e. Epiglottis
f. Glottis
g. trachea
h. Rings of cartilages
i Larynx
j. Alveoli
please help
Answer:
a. The function of the nasal cavity is to warm, moisturize, and filter air entering the body before it reaches the lungs. Hairs and mucus lining the nasal cavity help to trap dust, before it reached the inner portions of the body.
b. It filtered the air to protect you from illness irritation of the respiratory tract
c. It traps smaller particles like pollen or smoke.
d. It regulate the passage of air to the lungs and food to the esophagus. The throat, is the passageway leading from the mouth and nose to the esophagus and larynx.
e. It seal off the windpipe during eating, so that food is not accidentally inhaled.
f. Glottis opens into the windpipe and is responsible for the production of sound
g. It serves as passage for air and warms it while it passes into the lungs, and protects the respiratory surface from an accumulation of foreign particles.
h. It helps support the trachea while still allowing it to move and flex during breathing.
i. It produces vocal sounds and prevents the passage of food and other foreign particles into the lower respiratory tracts.
j. It takes up the oxygen you breathe in and keep your body going.
Explanation:
ATP molecules, which are used for energy by cells, are built during all three stages of cellular respiration. Which stage of cellular respiration generates the most ATP molecules? (1 point) The Krebs cycle Glycolysis The electron transport chain Fermentation
Answer:
Electron transport chain.
Explanation:
the term evolution is best described as
Answer:
The term evolution is best described as. a process of change in a population through time.
Evolution is defined as the process of growth and development or the theory that organisms have grown and developed from past organisms. An example of evolution is how cell phones have changed over time.
HOPE IT HELPS : D
Explanation:
Evolution is a very important phenomenon, which is the change in the characteristics of species of organisms over the course of life for the purpose of better survival.
What is evolution?The term “evolution” is best described as the process of gradual and continuous change in the inherited characteristics of a species over many generations.
This change is driven by mechanisms such as natural selection, mutation, and genetic drift, which lead to variation in traits within a population over time.
The theory of evolution by natural selection is widely accepted among scientists as the best explanation for the diversity of life on Earth. In addition to its importance in understanding the development of life on Earth, the concept of evolution has far-reaching implications for many areas of study, including medicine, agriculture, and conservation biology.
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