Answer:
It is a system for conducting a scientific investigation
Explanation:
When wondering why something happens it first starts out with a question and then it becomes a scientific investigation so that's why it is a system or way of conducting a scientific investigation. Continue reading furthur for more info.
It is also a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
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can someone help me please
Definitions:
Atomic Mass- mass of an atom. The atomic mass is approximately equal to total number of protons and neutrons.
Atomic number- Number of protons in the nucleus of an atom.
Element- a pure substance that can't be broken down by chemical means.
Table:
Hydrogen/1.008/1/1
Strontium/87.62/38/38
Palladium/106.42/46/46
Fluorine/18.998403163/9/9
meaning of cytoplasm protoplasm and neucleoplasm and what's their relation with one another? explain.
Answer:
Explanation:
the relations of these three
Protoplasm refers to the living contents of cell and consists of cytoplasm and a nucleus. Cytoplasm refer to the matrix present outside the nucleus in which all the cell organelles are found embedded. The nucleoplasm/karyoplasm refer to the matrix present inside the nucleus only.
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Answer:https://brainly.com/question/16020352
Explanation: hope this helps!
Why should scientists classify organisms
Answer:
Explanation:
Scientists classify living things in order to organize and make sense of the incredible diversity of life. Modern scientists base their classifications mainly on molecular similarities. They group together organisms that have similar proteins and DNA.
Can you please help me
Answer:
The answer would be A. The claims are based on empirical evidence and are likely to be pseudoscientific. They are not particularly useful
Explanation:
hope this helps
The claims are based on empirical evidence and are likely to be pseudoscientific. They are not particularly useful. Therefore, option A is correct.
What is pseudoscience?A statement, discovery or explanatory system that is presented as pseudoscience lacks the objectivity required by the scientific process. Research that is based on dubious ideas, a defective experimental design, or unreliable data can also lead to pseudoscience.
Pseudoscience may be presented in good faith due to incomplete or inaccurate data analysis. However, it is also possible to deliberately apply scientific methods incorrectly in order to instill unjustified confidence in conclusions that would not be supported by a more rigorous approach.
These claims are pseudoscientific. Hence, option A is correct.
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Which of the following is a characteristic of phloem cells?
(A) contain cytoplasm at maturity and used to transport water from the roots to
the rest of the plant
(B) contain cytoplasm at maturity and used to transport sugars throughout the
plant
(C) lack cytoplasm at maturity and used to transport water from the roots to the
rest of the plant
(D) lack cytoplasm at maturity and used to transport sugars throughout the plant
Answer:
Phloem is the vascular tissue responsible for the transport of sugars from source tissues
Soil is found on the ______________ layer of Earth’s surface.
Answer:
Crust
Explanation:
Soil is found on the outermost layer of the Earth, or the crust. The crust is made up of dead plant and animal matter, clay, rocks, sand, water, and other nitrogen and carbon rich compounds that help aid the microorganisms which thrive with in it. The matter found within the soil differs depending on it's location, but all of it can be found on the crust.
______ is the process of removing salt from ocean water.
A) Desalination
B) Evaporation
C) Osmosis
D )Flash technology
Explanation:
Desalination is a process that takes away mineral components from saline water. More generally, desalination refers to the removal of salts and minerals from a target substance
Describe characteristics of fauvist style in madame matisse the green line by henri matisse
Characteristics such as the use of contrasting colors are part of the fauvist style in Madame Matisse's portrait.
What is the fauvist style?Fauvism was an artistic movement that focused on the use of contrasting strong colors rather than realistic representations.
Why is the portrait of Madame Matisse part of this style?This portrait shows a black-haired woman. In this portrait, the painter Henri Matisse used contrasting colors in the face and background, which is part of this style.
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Which is an example of the beneficial application of plants in human society?
Answer: They provide oxigen to the human society
Explanation:Once they have water and carbon dioxide, they can use energy from sunlight to make their food. The leftovers from making the plant food is another gas called oxygen. This oxygen is released from the leaves into the air.
what is. a tetrad?!?!?!?!
The four spores generated following meiosis in a yeast or other Ascomycota, Chlamydomonas or another alga, or a plant are known as the tetrad. Diploids are produced when parent haploids mate. Diploids sporulate and go through meiosis when the conditions are right.
what causes a continent to grow?
Answer:
Architecture and the overall ability to be good as a community. That's how I see continents positively growing today.
Architecture means designing and building things.
Pronounce:
Arc-e-tex-ture
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Why are natural bee populations inadequate at pollinating our crops
Accidents can occur in meiosis wherein members of a chromosome pair fail to separate at anaphase. This is called _____.
Answer:
Accidents can occur in meiosis wherein members of a chromosome pair fail to separate at anaphase. This is called nondisjunction.
Explanation:
Answer:
Nondisjunction
Explanation:
Nondisjunction occurs when homologous chromosomes or sister chromatids fail to separate during mitosis or meiosis. This leads to daughter cells with unequal amounts of DNA. In fetuses in particular, this type of accident can have extreme consequences, such as the birth of a child with Down's Syndrome or a premature death.
To decrease the likelihood of cultural eutrophication from the effluent released from a water treatment facility, sewage plants may include a
a. secondary treatment, removing nitrogen and phosphorous.
b. secondary treatment, using bacteria to breakdown algae.
c. tertiary treatment, using bacteria to break down algae.
d. tertiary treatment, removing nitrogen and phosphorous.
Secondary treatment removing nitrogen and phosphorous will best prevent likelihood of eutrophication.
What is Eutrophication?This is defined as a gradual increase in the concentration of phosphorus, nitrogen, and other plant nutrients in an aging aquatic ecosystem.
These nutrients are organic which is what Secondary treatment deals with which was why option A was chosen as the most appropriate choice.
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In 3 to 5 sentences, analyze potential impacts of oceans on human populations as the result of climate change in the current century
Answer:
Due to continuous global warming, the oceans tend to gain more heat, and hence the temperature rises. In the current century, the heated conditions of the oceans can be threatful for the human population. Also, the increase in the sea levels will have serious consequences on the health of mankind and their quality of life.
Explanation:
As the overabundance heat and energy warms the ocean, the temperature change causes unprecedented cascading effects such as ice melting, sea-level rise, marine increased temperatures, and ocean acidification.
What is ocean acidification?The massive quantity of carbon dioxide absorbed by the ocean dissolves as carbonic acid in seawater.
This is known as ocean acidification, and it is literally causing a sea change that is threatening the basic chemical balance of ocean and coastal waters from pole to pole.
Changing ocean chemistry, according to laboratory studies, will
Harm life forms that rely on carbonate-based shells and skeletons, Harm organisms which are usually sensitive to acidity.Harm organisms in higher tropic levels of the food chain that feed on these sensitive organisms.As the ocean warms due to an abundance of heat and energy, the temperature change causes unprecedented cascading effects such as ice melting, sea-level rise, increased marine temperatures, and ocean acidification.
Thus, the human population can be widely affected as a result of impacts of climate changes.
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how do power plants generate electricity? this is an integrated science question
Coal fired plants produce electricity by burning coal in a boiler to produce steam. The steam produced, under tremendous pressure, flows into a turbine, which spins a generator to create electricity. The steam is then cooled, condensed back into water and returned to the boiler to start the process over.
Hydrofluorocarbons (HFCs) were used to phase out chlorofluorocarbons (CFCs), which were used as aerosol propellants, refrigerants, and coolants. Members from 197 nations meeting at the summit of the United Nations Environment Programme in Kigali, Rwanda reached a legally-binding accord to phase out HFCs in an amendment to the Montreal Protocol due to HFCs potential for A) global warming. B) increased cancer incidence. C) toxicity and biomagnification in aquatic ecosystems. D) contributing to habitat destruction of endangered animals.
Answer:
Members from 197 nations meeting at the summit of the United Nations Environment Programme in Kigali, Rwanda reached a legally-binding accord to phase out HFCs in an amendment to the Montreal Protocol due to HFCs potential for global warming.
Explanation:
The Phase-out Management Plan (HPMP) for Hydrochlorofluorocarbons (HCFCs)
Under the Montreal Protocol on Substances Depleting the Ozone Layer, in particular the Executive Committee (ExCom) 53/37 and ExCom 54/39, the Parties to this Protocol agreed to set 2013 as the time for developing countries to freeze consumption and development of HCFCs. For developing countries, the decline in consumption and production of HCFCs started in 2004 and 2010, respectively, with a decline of 100% set for 2020. Developing countries have agreed to start reducing their HCFC consumption and output by 2015, with a reduction of 100% set for 2030.
Hydrochlorofluorocarbons are a category of man-made compounds containing hydrogen, chlorine , fluorine and carbon, generally referred to as HCFCs. In nature, they are not found anywhere. After countries decided to phase out the use of CFCs in the 1980s, which were found to be damaging the ozone layer, HCFC production began to take off. HCFCs are used for refrigeration, aerosol propellants, foam processing and air conditioning, much like CFCs. However, unlike CFCs, most HCFCs in the lowest part of the atmosphere are broken down and pose a much smaller danger to the ozone layer. Nonetheless, considering their very low atmospheric concentrations, HCFCs are very potent greenhouse gases, measured in parts per trillion. Compared to CFCs with ODP 0.6-1.0, these HCFCs have lower ODPs (0.01-0.5) in terms of ozone depletion potential (ODP). Compared to CFCs with a GWP of 4,680-10,720, HCFCs have lower GWPs (76-2,270) in terms of global warming potential ( GWP).
Hydrofluorocarbons (HFCs), manufactured mostly in developing countries, have replaced CFCs and HCFCs. HFCs do not cause damage to the ozone layer because they do not contain chlorine, unlike CFCs and HCFCs. However, they are greenhouse gases, similar to that of CFCs and HCFCs, with a strong global warming potential ( GWP).
In the other three options ,there is no role of the members from 197 nations meeting at the summit of the United Nations Environment Programme in Kigali.
Hence, the correct option is A.
do you think you can help?
Answer:
D. Mass
Explanation:
Mass is not a state of matter, unlike the other items listed. Mass is a body of matter or how much matter is in an object.
why is the composition of oxygen in the alveoli lower than the composition of oxygen in the atmosphere?
Answer/ Explanation:
The respiratory system works to humidify incoming air, thereby causing the air present in the alveoli to have a greater amount of water vapor than atmospheric air. Alveolar air contains a greater amount of carbon dioxide and less oxygen than atmospheric air.
A few other reasons are....Alveolar air is partially replaced by atmospheric air during each breath
Oxygen is constantly absorbed into the blood from alveoli
Carbon dioxide is diffused into alveoli from blood
As air enters respiratory passages it becomes humidified diluting the inspired gases' partial pressures
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Which of the following best explains the role of deep sea coral reefs in the environment? a. They are responsible for fouling fishing lines. B. They are a quick-growing food source for deep water predators. C. They provide a critical habitat for many other organisms. D. They are a record of past climate conditions. Please select the best answer from the choices provided A B C D.
The role of deep-sea coral reefs in the environment is to provide critical habitat for many other organisms. So, the correct option is C.
What do you understand about Coral reefs?A coral reef is an underwater ecosystem characterized by reef-building corals.
Coral reefs provide critical habitat for many invertebrates and fishes. These organisms are also known as cold-water corals, as they are found in the deeper and darker part of the ocean where the temperature is extremely low.
Therefore, the role of deep-sea coral reefs in the environment is to provide critical habitat for many other organisms.
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Fossil evidence cannot reveal which of the following important information about animals
that have lived in the past?
• Exact year of death.
• Environment.
• Diet.
• Size.
Answer:
Fossils are the remains of plants, animals, fungi, bacteria, and single- celled living things that have been replaced by rock ... Some fossils show how an organism lived.
Gene investigated the effect of moisture on the rate of growth of mold on bread. He put two identical slices of bread on separate plates. He made one slice moist and kept the other slice dry. He left the uncovered plates on a table for 2 hours. Then, he sealed them in plastic bags and put them in a dark, warm place. He looked at them each day for five days. After five days, he observed that 50 percent of the moist slice was moldy, and none of the dry slice was moldy. If Gene observed the slices for three more days, what would he most likely observe?
There would be less mold on the moist slice. There would be more mold on the moist slice. There would be the same amount of mold on each slice. There would be no change in the amount of mold on either slice
Answer:
More mold on the moist slice
Explanation:
Assuming that the trend continues, then after another 3 days, a higher percentage (more than the original 50%) of mold will be found on the moist slice, while the dry slice may either be unaffected or may develop very little mold.
What would you do to preserve the resources?
Answer:
Explanation: Choosing food from farmers that aim to conserve the natural resources and have as little impact on the land as possible. But even buying as much as you can from local farmers makes a different. Eating more whole grains, vegetables, fruits and nuts, and less red meats and processed foods does too. Grow your own fruits and vegetables.
5 point
9) Which property of elements is described? Can be hammered into
sheets -
lustrous
brittle
malleable
O ductile
Answer:
I'll answer your question if you answer mine
Explanation:
How much time will be required for a sample of H-3 to get to 6.25 grams from an original sample of 50.0 grams? The half-life of tritium is 12.26 years.
Answer it then I'll answer yours
what is the best adam
Answer:
dont you mean atom? and i have ur answer :)
Explanation:
Bohr’s atomic model
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Which organism is an autotroph?
fox
squirrel
tree
fungus
Answer:
The tree is the autotroph.
Explanation:
First, let's define what autotrophs are.
Autotrophs are organisms that make their own food, not relying on other organisms to eat.
Now let's explain why trees are the answer.
Trees use photosynthesis to make their own foods in the form of glucose (or sugar). The plant then uses these to sustain themselves. This process makes them an autotroph.
Answer:
Pretty sure its a tree, an autotroph is an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide. which would be a tree
identify the organelles labeled
Answer:
F is mitochondria, A is nucleus
Explanation:
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Which characteristic best explains why lotic ecosystems tend to have more dissolved oxygen than lentic ecosystems?
Lotic ecosystems tend to be warmer, which increases dissolved oxygen levels.
Lentic ecosystems contain still water, which decreases the solubility of oxygen.
Lentic ecosystems tend to have a larger variety of species using up the oxygen.
Photosynthetic organisms use most of the dissolved oxygen in lentic ecosystems.
Which characteristic best explains why lotic ecosystems tend to have more dissolved oxygen than lentic ecosystems?
⋆Lotic ecosystems tend to be warmer, which increases dissolved oxygen levels.
⋆Lentic ecosystems contain still water, which decreases the solubility of oxygen. ✓
Lentic ecosystem ,due to having still water bodies which are comparatively smaller than the waterbodies in lotic ecosystem, evaporates faster so does cools down , resulting in more dissolved oxygen than that in a lentic ecosystems.⋆Lentic ecosystems tend to have a larger variety of species using up the oxygen.
⋆Photosynthetic organisms use most of the dissolved oxygen in lentic ecosystems.
The characteristic that best explains why lotic ecosystems tend to have more dissolved oxygen than lentic ecosystems is lentic ecosystems contain still water, which decreases the solubility of oxygen. The correct option is b.
What are lentic and lotic ecosystems?Lotic ecosystem refers to environments with flowing water, such as rivers and streams, lentic (from the Latin lentus, meaning sluggish or motionless), refers to standing waters such as lakes and ponds (lacustrine), or swamps and marshes (paludal).
Examples of Lentic ecosystems are ponds, marshes, etc. and examples of lotic ecosystems are streams and rivers. Rivers are always moving and ponds are still.
Therefore, the correct option is b. Still, water is a component of lentic ecosystems, which reduces oxygen solubility.
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Photosynthesis takes place in the chloroplasts of plant cells.
True
False
Answer:
True.
Explanation:
The chloroplasts' function is to take energy to perform photosynthesis. That is why there are no chloroplasts in animal cells.
Answer:
True
Explanation:
Photosynthesis is a process by which phototrophs convert light energy into chemical energy, which is later used to fuel cellular activities. The chemical energy is stored in the form of sugars, which are created from water and carbon dioxide.
In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.