Answer:
The correct answer is - option D. rubbing hands in warm water.
Explanation:
The control group or the control is the variable or that is used in an experiment to check if the results are actually due to the experiment or to compare the result or effect of the experiment.
In this experiment, the independent variables are soap and the sanitizer and the dependent variable is the count of bacterial culture. To check the result or to compare the result that results are due to the experiment the control group is rubbing the hand vigorously in warm water.
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What is the relationship between air pressure and wind?
Answer:
Wind is air pressure converted into movement of air. When air slows down, its pressure increases. The kinetic energy or momentum of a moving air mass is converted in static atmospheric pressure as the air mass slows down. This means that higher wind speeds will show lower air pressure readings.
Answer: As the Sun unevenly heats the surface of the Earth, air rises and sinks, resulting in high and low regions of air pressure. As air rises, the pressure lowers and surrounding air moves in to replace it, causing wind. The more the pressure changes over a given distance, usually the faster the wind will be.
Explanation:
We're surrounded by living creatures that we can't see. What are some ways that tiny living things can affect your life, health or environment? Bacteria are tiny
Answer:
Microorganisms that are not visible are so called because their measurements are in micrometers and even nanometers.
We usually talk about viruses, bacteria, fungi and even parasites.
Explanation:
Microorganisms are mostly pathogens for humans, but others make up the commensal biota of the same living being.
Not all microorganisms need the same means to live and develop as large organisms such as those that are simple to the human eye.
Some microorganisms are seen by optical microooscopy and others smaller by electronically.
Show work
13.5mm = ?m
Answer:
0.0135
Explanation:
Move the decimal place three times to the left
Which point in the periodic table below represents a metalloid?
A. D
B. E
C. A
D. C
E. B
Answer: E: B
Explanation: this is because on the right side of the periodic table there is a set of stairs that indicate metalloids and B(boron) is on that staircase
The periodic table below represents a metalloids are E and B . Thus, option B and E are correct.
What is metalloid?The metalloid has been defined as the type of chemical element which has been preponderance of the properties just in between as well as the mixture of the metal and non metal.
A metal has been defined as a material that has to be prepared freshly and polished and fractured that shows that a lustrous look or appearance and it conducts the electricity as well as heat well relatively. The main nature of metal has that they are totally malleable and ductile and these are the properties of matter which has due to metallic bond which lies in the between the atoms or the molecules present in the metal.
There are several properties of metal and these properties are the metals have high point of melting, and the metals are good conductor of electricity, as well as they are good conductors of heat also. The metals consist high density and they are malleable and ductile in the nature.
Therefore, The periodic table below represents a metalloids are E and B .Thus, option B and E are correct.
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For all but which of the following reasons do old-Earth creationists think the Earth is about 4.6 billion years old?
Answer: Scientists tried to determine Earths age via our planets layers of rock, which must have been built over time.
Explanation: PLEASE GIVE BRAINLIEST IT HELPS ALOT
This is my question: Does brain save information?
Which of these best defines environmental ethics?
A. The moral relationship between human beings who have an ethical standard about the environment
B. The moral relationship between human beings and the environment, including non-human life forms
C. A movement where people think of better ways to deal with environmental issues
D. The way non-human life forms relate to their natural environment
Answer:
B..........................
A movement where people think of better ways to deal with environmental issues is best defines environmental ethics.
What are environmental ethics?Environmental ethics is an established field of practical philosophy "which reconstructs the essential types of argumentation that can be made for protecting natural entities and the sustainable use of natural resources."
Environmental ethics is a branch of applied philosophy that studies the conceptual foundations of environmental values as well as more concrete issues surrounding societal attitudes, actions, and policies to protect and sustain biodiversity and ecological systems.
Environmental ethics provides moral grounds for social policies aimed at protecting the earths environment and remedying environmental degradation.
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Why is it important to classify the millions of species on Earth?
Answer:
Because if not we wouldn't know anything about them like what we can eay and what we cant. We would be going to rabbits for wood.
Explanation:
Which adaptation is likely to increase the chances of survival of an organism in an arctic environment? (3 points)
White coat, as it protects from predators
Brown coat, as it protects from temperature
Thick coat, as it protects from predators
Thin coat, as it protects from temperature
Answer: White coat, as it protects from predators; is the answer. :)
Explanation: lmk if I’m right
Answer:
i think its white coat
Explanation:
pls tell me if im wrong, i hope this helps
what role did gravity play in the formation of the sun
Answer:
Gravity played a lot of roles in the formation of the sun and solar system. Gravity drew dust and gas together to create the young solar system. The sun formed first from the vast material, gravity caused the solar nebula to collapse toward the center. Which is what caused the hot core of the sun.
Simple terms, gravity helped push dust gases called the nebula which later formed the sun with a couple other things that played a role with the formation.
Explanation:
Hope this helps! <3
The gravity caused a push force on dust gases called the nebula which later formed the sun.
Role of gravity in the formation of the sunGravity played a crucial roles in the formation of the sun and solar system.
The young solar system was created from the gathering of dust and gas particles together by the sun.
The sun itself was formed from the vast material where gravity caused the solar nebula to collapse toward the center, creating the hot core of the sun.
Thus, the gravity caused a push force on dust gases called the nebula which later formed the sun.
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Joanna read that certain perfumes would cause bees to leave the hive and act in an agitated fashion. She decided to investigate the response of bees to five different perfumes- Ralph Lauren, Armani, Mark Jacobs, Vera Wang, and the last is an odorless liquid. She placed a saucer containing 20ml of perfume A 10 meters from a beehive. She then recorded the total number of bees that emerged from the hive during a 15 minute interval and made observations on their behavior. Using a 30 minute interval between tests to allow recovery time for the bees, she then repeated the procedure to test the remaining three samples. Each test was conducted on the same day with similar weather conditions. whats the independent variable
Answer:
PERFUME
Explanation:
In an experiment, the independent variable is the variable that is changed or manipulated by the experimenter in order to effect a measurable response in the dependent variable.
In this experiment, Johanna is trying to investigate the response of bees to five different perfumes- Ralph Lauren, Armani, Mark Jacobs, Vera Wang, and an odorless liquid, which is the control. Hence, the PERFUME is the independent variable because it is the manipulated variable.
In the image above, which is X?
Group of answer choices
1 year
1 light-year
1 AU
1 km
Answer: km
Explanation:
Answer:
1 AU
Explanation:
hope i helped :)
i have to write an Ocean Observation Method Paragraph can some one help me please?
Answer:
Changes in marine biodiversity—the variety and variability of life in the ocean—can be an early indicator of change, provided it's noticed. The U.S. Marine Biodiversity Observation Network (MBON) aims to ensure that scientists not only notice changes in biodiversity at locations around the nation, but also have the tools in place to better understand what these changes tell us about ocean health over time. But marine life doesn't know borders. That's why the U.S. network also supports international cooperation with other marine biodiversity networks, research institutions, governmental and non-governmental organizations and stakeholders around the world towards development of a truly
Explanation:
Which of the following types of cells is most likely a large number of Golgi bodies?
A. Muscle cells
B. Red blood cells
C. Gland cells
D. Heart cells
Answer:
option d cos the heart does more work than others
An ice storm kills many birds.
density-independent
density dependent.
Answer:
a
Explanation:
What is the CATALYST for photosynthesis?
Answer:
I'm pretty sure it's chlorophyll
Answer:
Credit: Brookhaven National Laboratory Chemists at the U.S. Department of Energy's Brookhaven National Laboratory have designed a new catalyst that speeds up the rate of a key step in "artificial photosynthesis"—an effort to mimic how plants, algae, and some bacteria harness sunlight to convert water and carbon dioxide into energy-rich fuels.
Explanation:
What is the difference between the DNA of a dog and the DNA of a fly?
A. The strength of covalent bonds.
B. The sequence of nucleotides.
C. The strength of hydrogen bonds.
D. The type of sugar building blocks.
Answer:
B. The sequence of nucleotides.
Explanation:
Different proteins build up.
The difference between the DNA of a dog and the DNA of a fly is the sequence of nucleotides (Option B). All organisms have DNA in their cells.
Desoxyribonucleic acid (DNA) is a molecule that contains the instructions (i.e., the genetic material) required to build and maintain the homeostasis, i.e., the internal equilibrium, of an organism.
Structurally, this molecule (DNA) is the same in all organisms.
DNA is composed of two long chains of nucleotides linked together by hydrogen bonds. The linear order of these nucleotides (i.e., Adenine, Guanine, Cytosine, and Thymine) determines the type and amount of proteins that are synthesized from a genome.
In conclusion, the difference between the DNA of a dog and the DNA of a fly is the sequence of nucleotides (Option B).
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Could someone help me on cause-and-effect
Answer: cause: meteor hits earth effect : global wasteland
Explanation: cause and effect are opposites and the stuff are easy i'll answer one
giant meteor hits earth :
Use the picture of an atom below to answer the question
Which statement best describes the part of the atom that is shown by the arrow?
0 It is an electron and it has a negative charge.
0 It is an electron and it has a positive charge
It is a proton and it has a negative charge.
It is a proton and it has a positive charge.
Answer:
It is an electron and it has a negative charge
The statement that best describes the part of the atom that is shown by the arrow is it is an electron, and it has a negative charge. The correct option is A.
What is an atom?Particles inside atoms are referred to as subatomic particles. These can be found throughout the atom in various places. The particles are charged.
A neutron is neutral, a proton is positively charged, and an electron is a negatively charged particle that revolves around the nucleus. The nucleus contains neutrons and protons.
Valence electrons are the electrons that are present in the outer shell of the atoms. These electrons are free electrons to form bonds with the electrons of other atoms.
Therefore, the correct option is A. It is an electron, and it has a negative charge.
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Are there ways that reef might provide benefits to people on land, not just marine life?
Answer:
Coral reefs protect coastlines from storms and erosion, provide jobs for local communities, and offer opportunities for recreation. They are also are a source of food and new medicines.
Over half a billion people depend on reefs for food, income, and protection. Fishing, diving, and snorkeling on and near reefs add hundreds of millions of dollars to local businesses. The net economic value of the world’s coral reefs is estimated to be nearly tens of billions off site link of U.S. dollars per year. These ecosystems are culturally important to indigenous people around the world.
Explanation:
Need help, please!!! (Very important!)
sixth mass extinction.
What evidence do we have that we are losing species at more than the normal rate?
Answer:
Most ecologists believe that we are in the midst of the sixth mass extinction. Humanity’s impact on nature, they say, is now comparable to the five previous catastrophic events over the past 600 million years, during which up to 95 percent of the planet’s species disappeared. We may very well be. But recent studies have cited extinction rates that are extremely fuzzy and vary wildly.
Explanation:
where are earths most diverse and productive biomes located?
Near the equator.
This is the answer on the environmental science quiz on A p E x
Which of these best describes a climax community? *
1 point
a growing forest with varied tree and shrub species after a wildfire
a balanced population of clownfish and sea anemones in a coral reef ecosystem
a booming population of plankton after farming that increased fertilizer runoff
a decreasing population of deer and oak after a hunting season and deforestation
When an ecosystem loses biodiver
Answer:the third one
Explanation:
Complete the statements to describe sporulation and vegetative propagation.
During sporulation, offspring develop from tiny structures called
.
During vegetative propagation, offspring grow from parts of the parent
Answer:
during sporulation, offspring develop from tiny structures called spores. During vegetative propagation, offspring grow from parts of the parent plant
Explanation:
Answer:
*spores
*plant
Explanation:
I am testing an unknow sample in the lab. This sample did NOT turn blue black in the presence of iodine. What can you conclude from this simple experiment?
A. The sample is a nucleic acid
B. The sample is made of a carbohydrate
C. The sample is made of starch
D. The sample is not made of starch
Answer:
the sample is not made of starch
In which direction does diffusion occur?
DNA is very small, one complete turn of a DNA helix is about______.
Answer:
10 base pairs
Explanation:
Describe the ways your proposed solutions decrease the negative effects of
habitat destruction and human activity on your selected ecosystem
Answer:
By stopping the practice of fishing in that river area, it can restrict the
abundance of species from reducing in population. If fishing stops, then it
allows the animals to restart their reproductive cycle to increase their own
species population.
A molecule has been isolated from a cell. The molecule's structure has a three dimensional shape and is made of folded chains of amino acids. The function of this molecule is enzymatic catalysis of glycolysis. An analysis of this molecule would show that it contains which of these elements that would NOT be found in carbohydrates? A) carbon B) nitrogen C) oxygen D) phosphorus E) sulfur
Answer:
B) nitrogen
Explanation:
According to this question, a molecule which has been isolated from a cell has a three dimensional shape made of folded chains of amino acids. The molecule functions in the enzymatic catalysis of glycolysis. Based on the description of this molecule, it can be determined that it is a PROTEIN.
This is because PROTEINS are the biomolecules that are composed of amino acids monomers. The three dimensional shape of the molecule represents the protein at the TERTIARY LEVEL. However, in the structure of the amino acids, which forms the protein molecule, a central carbon is attached to a carboxyl group (-COOH), an anime group (-NH2) and a R side chain.
The protein molecule, therefore, contains NITROGEN element, which cannot be found in carbohydrates (made up of only carbon, hydrogen and oxygen).
An analysis of this molecule (protein) would show that it contains this chemical element that would not be found in carbohydrates: B) nitrogen.
A molecule with a three (3) dimensional shape and comprises folded chains of amino acids describes a protein.
Also, one of the function of protein is the enzymatic catalysis of glycolysis.
Generally, protein is a macromolecule which is formed as a result of the union of many folded chains of amino acids.
The molecular structure of protein is made up of the following:
A carboxyl group (COOH).An anime group (NH2).A R-side chain.In conclusion, an analysis of protein would show that it contains nitrogen which would not be found in carbohydrates.
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A common test for liver function involves sprinkling sulfur powder onto a sample of urine (mostly water with dissolved bodily waste). Sulfur powder sprinkled on a sample from an Individual with impaired liver function will sink because the urine contains a high level of bile salts, while the sulfur powder sprinkled on normal urine samples will float.
Bile salts decrease the surface tension of the urine sample, that’s why the sulfur will sink in a sample from an individual with impaired liver function since it contains high levels of bile salts.
Bile salts caused the sulfur powder to sink because bile salts decrease the surface tension of the urine sample.
Liver function test are test procedures that are used to diagnose and monitor liver disease or damage.
When the liver is malfunctioning, such as in cases of hepatitis and cirrhosis, high level of bile salts are present in the urine. This is as a result of high serum bilirubin.
One of the fastest methods to carry out a test for liver function is sprinkling sulfur powder onto a sample of urine.
Surface tension is the quality displayed by water that enables substances of greater density float on it.
The bile salts is able to decrease the surface tension of the urine sample causing the sulfur powder to sink.
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