Answer:
Dry air is a mechanical mixture of nitrogen, oxygen, argon and several other gases in minor amounts.
Explanation:
True or false A hypotheses has been tested many times by different independent researchers but a theory has not
Answer:
true
Explanation:
yea a theory has not tested hypothesis
Answer:
Testing a hypothesis can lead to one of two things: the hypothesis is confirmed or the hypothesis is rejected, meaning it either has to be changed or a new hypothesis has to be created. This must happen if the experiments repeatedly and clearly show that their hypothesis is wrong. It doesn’t matter how elegant or supported a theory is—if it can be disproven once, it can’t be considered a law of nature. Experimentation is the supreme rule in the scientific method, and if an experiment shows that the hypothesis isn’t true, it trumps all previous experiments that supported it. These experiments sometimes directly test the theory, while other times they test the theory indirectly via logic and math. The scientific method requires that all theories have to be testable in some way—those that can’t are not considered scientific theories.
Explanation:
so in short True , can u mark me brainlyest
how fungi get there food?
Answer:
hmmmmmmmmmmmnnmmmmmmmmmmm mmmmm
Biomolecules are essential to all living things. Which biomolecule is "C" from the above table?
Answer:
Biomolecules are essential to all living things. Which biomolecule is "C" from the above table?
Explanation:
A farmer uses triazine herbicide to control pigweed in his field. For the first few years, the triazine works well and almost all the pigweed dies; but after several years, the farmer sees more and more pigweed. Which of these statements explains why the pigweed re-appeared?A) Natural selection caused the pigweed to mutate, creating a new triazine-resistant species. B) The herbicide company lost its triazine formula and started selling poor-quality triazine. C) Triazine-resistant pigweed has less efficient photosynthesis metabolism. D) Only triazine-resistant weeds survived and reproduced, so each year more pigweed was triazine-resistant.
Answer:
A) Natural selection caused the pigweed to mutate, creating a new triazine-resistant species.
Explanation:
Due to constant use of triazine, the weed will build resistance to it over time unlocking the herbicides codes and making it ineffective.
Natural selection will play out allowing this weeds to bring about a sudden change in their genome that will become resistance, this resistance breed is what will then be produced over time because mutation is heritable and the herbicide then becomes ineffective and the weed continues to multiply and increase in volume.
you were asked to make a speech on how you would contribute to reduction in resource depletion which idea would you promote?
a.) water conservation at school
b.) uses of phones in the classroom to learn about resources
c.) improving eating habits
d.) involvement in sports
Answer:
Its (A) water conservation at school
Explanation:
Just took quiz on ED 2020
In a coal-burning power plant, the coal is an example of a system _____.
A. Product
B. Throughout
C. Output
D. Model
E. Input
In a coal-burning power plant, the coal is an example of an Input System. So, the correct option is (E).
What is Coal burning power plant?Coal-burning power plants are defined as those plants that produce electricity by burning coal in boilers to generate steam. The steam produced under extreme pressure flows into a turbine, which spins a generator to create electricity, then it cools, condenses back into water and returns to the boiler to start the process.
About 50% of coal is used as the primary fuel for power generation. The main function of a coal fired thermal power plant is to convert the energy available in the coal into electricity where as power plants work by using multiple stages to convert the stored energy coal for usable electricity which is an example of input system.
Thus, In a coal-burning power plant, the coal is an example of an Input System. So, the correct option is (E).
Learn more about Electricity, here:
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what is the most precise measurement of the volume of this liquid
Answer:
pipets
Explanation:
volumetric flask and granulated cylinders
Soo-Jung used the subtraction property of equality to solve an equation for y. Which equation could be the one that Soo-Jung solved? 4 y = 12 StartFraction y Over 4 EndFraction = 12 2 (4 y) = 12 y + 4 = 12
Explanation:
Option 1.
4y=12
Dividing 4 both sides
y=3
Division property should be used.
Option 2.
[tex]\dfrac{y}{4}=12[/tex]
Cross multiplying each other,
y=12(4)
y=48
Option 3.
2(4y)=12
Opening bracktet in LHS
8y=12
Dividing both sides by 8 i.e.
[tex]y=\dfrac{12}{8}\\\\y=\dfrac{3}{2}[/tex]
Division property is used.
Option 4.
y+4=12
Subtracting both sides by 4 i.e.
Y+4-4=12-4
y=8
Subtraction property is used.
It means that in option (4) Soo-Jung used the subtraction property of equality to solve an equation for y.
Answer:
D y + 4 = 12
Explanation:
I just took the quiz and got 100
How is a scientific theory developed
Answer:
Scientific theories are created through the process of the scientific method. Observation and research lead to a hypothesis, which is then tested. ... Over time, a hypothesis can become a scientific theory if it continues to be supported by additional research.
hope it helped :)
Tyler is admitted to the hospital after an accident. In the hospital, Tyler overhears the doctor telling his mom that although he has a fracture in the axial skeleton, he’s lucky because the bone doesn’t protect any vital organ that’s essential for survival. Which bone has Tyler fractured?
Answer:
The correct answer is mandible
Mandible is a lower jaw bone that does not protect any organ in our body.
It is located in the facial region and is the strongest and largest bone of the mouth.
Mandible contains a region for the lower teeth and forms a temporomandibular joint.
The structure of mandible is comprised of two regions:
- The horizontal body (anteriorly)
- Two vertical rami (posteriorly)
Explanation:
Which of the following is a correct definition for "interdependence"? A. no organism is allowed to go off on its Own B. no ecosystem is able to thrive off of another ecosystem C. no organism can survive without the help from another organism
Answer:
C
Explanation:
the definition of interdependence is the dependence of two or more people or things on each other.
what are 3 characteristics for evaporation
Answer:
The three characteristics for evaporation are heat, atmospheric pressure and air movement. Hopefully this helps.
Explanation:
Prokaryotic cells do not contain many of the organelles that eukaryotic cells have. Prokaryotic cells do have a primitive form of _____________.
Answer:
Figure 1. A typical prokaryotic cell contains a cell membrane, chromosomal DNA that is concentrated in a nucleoid, ribosomes, and a cell wall. Some prokaryotic cells may also possess flagella, pili, fimbriae, and capsules.
please give brainlist
hope this helped.....
Prokaryotic cells do not contain many of the organelles that eukaryotic cells have. Prokaryotic cells do have a primitive form of Ribosomes.
What are Prokaryotic cells?Prokaryotic cells may be defined as the types of cells that lack a well-defined nucleus and other membrane-bound cell organelles. The genetic material of a prokaryotic cell is a single chromosome made up of a single strand of DNA.
A Prokaryotic cell typically has a cell membrane or plasma membrane that functions or operates like a protective cover. Golgi apparatus, mitochondria, and chloroplasts are significantly absent in prokaryotic cells. This is because they are membrane-bound cell organelles.
The traces of ribosomes are required for the process of protein synthesis in order to accomplish metabolic activities required for the survival of prokaryotic organisms.
Therefore, the primitive form of ribosomes is generally present within the prokaryotic cells.
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what is the function of the mitochondria
Answer:
The mitochondria are organelles that generate the chemical energy needed to power the cell.
Explanation:
What type of rock (granitic or basaltic) would be more likely to contain the mineral quartz Why?
Answer:
I think granitic rock would contain more mineral quartz.
Explanation:
Because the magma cools slowly, crystals of different minerals have time to grow. Molecules in the lava do not have time to arrange themselves to form large crystals. Extrusive rocks have crystals that are too small to see without magnification. A common example of an extrusive igneous rock is basalt.
Lactase is an enzyme that breaks down a sugar found in dairy products known as lactose. Some people are lactose intolerant, and this can be due to not having enough lactase production.People who are lactose intolerant may not feel well after eating foods containing lactose. Identify the enzyme
Answer:
Lactose intolerance is the inability to digest a sugar called lactose that is found in milk and dairy products. Normally when a person eats something containing lactose, an enzyme in the small intestine called lactase breaks it down into simpler sugar forms called glucose and galactose.
Explanation:
Two species of pine tree are very similar to each other. The pine trees are very different from a species of palm tree. Which statement best describes the characteristics of these trees?
Answer:
This question lacks options; the options are:
A). All of the tree species have the same number of characteristics in common.
B). The two species of pine trees have fewer characteristics in common than the pine trees and the palm trees.
C). The two species of pine trees have more characteristics in common than the pine trees and the palm trees.
D). None of the tree species have any characteristics in common
The correct answer is C.
Explanation:
Living organisms are of numerous and different species. In the order of classification of living organisms, species is the most exclusive and also represents the smallest. However, an organism can have different species on the basis of shared or common characteristics.
Two species are said to be similar if they share or have more characteristics in common. Likewise, different species have less characteristics in common. Hence, in the case of two pine tree species, which are very similar to each other but very different from a species of palm tree. This implies that the two pine tree species have more characteristics in common than they do with the palm tree species.
Answer:
c the two species of pine trees have more characteristics in common than the pine trees and the palm trees.
Explanation:
I I got it right on edge 2021
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Appreciate your help :)
Answer:CH4, H2O2, N2O
Explanation:
A compound is something that has more than one element in it. You can tell because Hydrogen (H) and Oxygen (O) are separated by a 2, meaning two hydrogen and two oxygen are bonded together
Based on the second law of thermodynamics, how much biomass of phytoplankton would be needed to produce 1 kilogram (kg) of large fish in this food web?
Answer:
1000kg
Explanation:
The 10% rule states that 10% of the energy stored as biomass at one trophic level, ends up as biomass at the next trophic level. So, in a 4 levels food web, we need 1000 kg of the first level -phytoplankton- to produce 1 kg of the last level -large fishes-.
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From the energy that reaches the earth's surface, only 0.1 or 1% is absorbed by autotroph organisms or producers. This small percentage of this energy flows through all organisms in the ecosystem -from autotrophs to heterotrophs- until it dissipates in the environment.
Only 10% of energy is tranferred from one level to the next one. This assessment is called The 10% rule. It states that only about 10% of the energy stored as biomass at one trophic level, ends up as biomass at the next trophic level.
The progressive reduction of energy determines the number of trophic levels (4 or 5).
Let us analyze the given example.
Phytoplankton ⇒ Zooplankton ⇒ Small Fishes ⇒ Large Fishes
According to the 10% rule, to support 1 kg of large fish, 10 kg of the anterior level -small fish- is needed.
To get the biomass of each level needed to support 1 kg of large fish, we need to multiply each level biomass by 10. This is:
To get 1 kg of large fish: 1 kg x 10 = 10Kg of small fish To get 10 Kg of small fish: 10 kg x 10 = 100Kg of zooplanktonTo get 100 kg of zooplankton: 100Kg x 10 = 1000 kg of phytoplankton.So, in this example, to produce 1 Kg of large fishes, we need 10 kg of small fishes, 100 kg of zooplankton, and 1000Kg of phytoplankton.
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protons, neutrons, and electrons. The protons and the neutrons make up the center of the atom called the nucleus and the electrons fly around above the nucleus in a small cloud. how can i say this different
Answer:
the nucleus in a small cloud
Explanation:
Leslie is investigating which brand of cell phone has the longest lasting battery.
What is the dependent variable?
Answer:
The battery
Explanation:
The battery is the dependent variable because it can change based on which brand of phone.
Which best describes an idea that has scientific consensus?
All scientists must support the idea.
Few scientists think the idea is valid.
Most scientists disagree with the idea.
Most, but not necessarily all, scientists agree with an idea.
Answer:
the last option is the best
Explanation:
no idea that will ever pass without disagrement from other scientists who generate and defend the opposite ideas
All scientists must support the idea best describes an idea that has scientific consensus.
Scientific consensus is the collective judgment, position, and opinion of the community of scientists in a particular field of study. Consensus generally implies agreement of the supermajority, though not necessarily unanimity.Why is consensus important for scientist?It tells things that have already learned, and it let us know when things have stopped being debated in the sciences.Consensus is achieved through scholarly communication at conference, the publication process.To know more about scientific consensus here
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which term references the approach sociologists use as a road map for how to view the world? A. Determinant B. Mindset C. Theoretical framework D. Physical grant
Answer: Theoretrical framework
Explanation: got it right on apex
Which of the following is not a defining characteristic of water
Low specific heat capacity
Polarity
Cohesion
Surface tension
Answer:
low specific heat capacity
Explanation:
Maria’s father started a fire in the fireplace. He crumpled some paper, lit a match, and soon the logs in the fireplace were burning. In the case, the stored chemical energy in the logs was changed into
Answer:
The options are
A) electrical energy.
B) mechanical motion.
C) heat and light energy.
D) electrical and heat energy.
The answer is C) heat and light energy.
Explanation:
Chemical energy in the wood is lit up by fire and a burning process begins to occur. Burning involves a substance being consumed by fire and fire aids in the conversion of some forms of energy to mainly light energy as a result of the burning flames and also to heat energy as a result of the high temperature in the form of heat which the fire brings into play.
This validates the stored chemical energy in the logs being changed into light and heat energy.
What is bile juice,is it physical or chemical
Explanation:
Hey there!!!
It is a chemical.
Biles are the yellowish substances which are produced by liver to help in digestion process.
Hope it helps...
Answer:
Bile is a digestive juice that is secreted by the liver and stored in the gallbladder. And it is chemical
what is anyhrosphere (in your own words)?
Answer:
something that you invent?
Explanation:
Answer:
The anthroposphere encompasses
Explanation:
the total human presence throughout the Earth system including our culture, technology, built environment, and associated activities. ... In physical terms, the anthroposphere is comprised of the cities, villages, energy and transportation networks, farms, mines, and ports.
What can likely happen to uncommon alleles in small, isolated populations as a result of genetic drift?
Explanation:
they are likely to be lost.
Our muscles contain lots of protein. This protein enables the muscles to _____________.
The study of planets, the sun, comets, etc
Answer: the answer is astronomer
Explanation:
Answer:
Astronomy
Explanation:
Astronomy:
The study of planets, the sun, comets, universe and the whole celestial galaxies.
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