What type of molecules will create a solution when mixed with water?
Answer:
If you start to stir the liquid, the mixing process happens much faster. 2. The molecules of the solvent begin to move out of the way and they make room for the molecules of the solute. Example: The water has to make room for the sugar molecules to spread out.
Explanation:
All of the variables that are kept the same between the experimental
group and control group in an experiment are called
A. independent variables
B. dependent variables
C. experimental variables
D. controlled variables
Answer:
controlled :variables
An experimental design includes the independent, dependent, and controlled variables. The variables that are kept constant are called controlled variables. Thus, option D is correct.
What are controlled variables?Controlled variables are part of scientific experimentation that are kept constant and remain unchanged through the research and experiment. It is important to control some variables as they might limit and influence the other variables.
They are the same in the experimental group and control group to establish the relationship between the dependent and the independent variables. They are kept at the same rate throughout the groups. For example humidity, temperature, light, etc.
Therefore, in option D. the controlled variables are kept the same in the test and control groups.
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Please help me with 8th grade science
Answer:
the last one
Explanation:
molecule is defined as two or more atoms of the same element different element that are bound together. A molecule may be homonuclear, which means, it consists of atoms of one chemical element, as with oxygen (O2); or it may be heteronuclear, a chemical compound composed of more than one element, as with water (H2O).
What allowed for the Europeans to have a "Garden of Eden without humans"?
Answer:
The supply of foods and fruit allowed Europeans to have "Garden of Eden without humans"
A new sunscreen has been developed that is supposed to be more effective at preventing sunburn. 30 participants spray one arm with the new formula and spray the other arm with the leading formula. After 4 hours in the sun, their skin is evaluated for any redness.What is the Independent Variable?a. the 30 arms with the old formulab. the 30 arms with the new formulac. Amount of rednessd. Type of sunscreene. the 15 arms with the new formula
Answer:
The correct answer is : b. the 30 arms with the new formula
Explanation:
Independent variable is a variable that is present in the experiment and research experimenting about and do not depend on any other variable. In this experiment the researcher is experimenting about the new sunscreen and its effect on the people.
In this experiment the 30 arms with new formula is independent variable that would change or altered the dependent variable.
Thus, the correct answer is : b. the 30 arms with the new formula
Miss Brinbauer gave her students the following homework assignment: "This box contains several items. Examine the items carefully to determine their similarities and differences. Use your knowledge of rocks and minerals to place each item into one of three groups: 1) rock, 2) mineral, or 3) neither.” What skills is Miss Brinbauer asking her students to use to complete their homework assignment? Check all that apply. predicting classifying modeling analyzing interpreting
Answer:
Classifying and Analyzing.
So, B and D.
Science question !!!
Answer:
A. a decrease in air pollution
Explanation:
Because solar panels do not create any pollutants therefore it is A. a decrease in air pollution
What is lab safety important
HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEE PLZZZZ
The human genome is a diploid genome. However, when germ-line cells produce gametes, these specialized cells are haploid. What is the total number of chromosomes found in each of the gametes (egg or sperm) in your body
Answer:
23 chromosomes
Explanation:
The total number of chromosomes found in each of the gametes in the body of humans is 23.
The human genome is diploid (2n) with 46 chromosomes. The sex cells divide by meiosis - a reductional division that results in the halving of the chromosome number - during the formation of gametes. Hence, the gametes are haploid (n) with half the number of chromosomes (23) of the vegetative cells of the body.
Therefore, the eggs in females and the sperms in males each contain haploid (n=23) number of chromosomes.
Which was Charles Darwin's contribution to the study of biology?
O He was the first person to recognize that organisms change over time.
O He believed that organisms adapted through the inheritance of acquired traits.
He explained how traits are passed from parents to offspring.
O He proposed that natural selection is the primary mechanism of evolution.
Answer:
He proposed that natural selection is the primary mechanism of evolution.
Explanation:
Which of the following is an example of motion?
Jumping up and down
Sitting in a chair
Lying on a couch
Standing on a table
Why can water pass through the semipermeable membrane, but not salt or sugar?
There’s no answers it’s just space to write but I don’t know what to write can someone please help?
Answer:
no
Explanation:
because water doesn't need to flow through salt and water because it will mix with water
Answer:
due to large size of salt and sugar
Explanation:
Some molecules, such as hydrocarbons and oxygen can cross the membrane. Many large molecules (such as glucose and other sugars) cannot. First, imagine a semipermeable membrane, one that will allow water to pass through but keeps in dissolved molecules
During photosynthesis, ___________ energy is converted into ____________ energy.
solar; usable chemical
light; kinetic
usable chemical; potential
Answer:
solar ;usable chemical
Answer:
The correct answer is "A" solar; usable chemical
Explanation:
got it on Usatestprep :)
Is the atmosphere a open or closed system?
Answer:
The atmosphere is a closed system
Explanation:
Because inside the atmosphere open system
What sea is located at 17.06 Lat 64.34 Lng?
Answer:
The correct answer is - Arabian sea.
Explanation:
Longitude and latitude coordinates are the geographical position of a place present on the earth. Longitude coordinates tell the exact east west point on the earth surface while Latitude coordinates tells the exact north south location of a point on the surface of the earth.
The degree decimal in the question is 17.06 latitude and 64.34 longitude which is the position of the Arabian sea on the globe.
Thus, the correct answer is : Arabian sea.
What are the three elements that build carbohydrates?
Answer:
carbon, hydrogen, and oxygen
Explanation:
Paul Snelgrove: A census of the ocean Both in Unit 1 and in Snelgrove’s talk, emphasis is placed on the importance and massiveness of the world’s oceans. Identify some of the facts from both the unit and the video that support this claim. During his talk, Snelgrove comments that we know more about the Moon or Mars than we do about the deep-sea floor and marine habitat as a whole. Why is this surprising and even ironic? Snelgrove describes a fishing disaster that occurred where he grew up in Canada in an effort to explain how we are now experiencing “shifting baselines.” Explain what he means by this term. According to Snelgrove, if you were to suck all of the water out of the ocean, what would you be left with? Describe what Snelgrove discusses in terms of how the oceans play a part in global collaboration. Discuss the concerns Snelgrove has regarding the health and safety of our oceans and ocean life. As he concludes his talk, Snelgrove says, “And as the oceans go, so shall we.” Explain what he means by this statement.
Answer:
Snelgrove showed the value of the ocean and its wellbeing to humans. We rely on the sea, and as it fights and declines, we all start to work as well.
Explanation:
PLEASE HELP ME IF YOU CAN!! 9. Do you think it is possible for a biome to change due to human activities? Explain
a situation in which this might happen.
f(x) = x3 , then f(4) =
6. Which of the following types of organic compounds serve the function of
carrying genetic information? *
carbohydrates
lipids
proteins
nucleic acids
Answer:
nucleic acids
Explanation:
.......
Which two factors affect the strength of gravitational force? Distance and mass Distance and speed Speed and velocity Mass and weight
Answer:
mass and distance the force of gravity
Answer:
The mass of the the distance, the weight and force of gravity
Explanation:
Meat tenderizer contains an enzyme that breaks down meat quickly at room temperature. If meat is coated with tenderizer and then placed in a refrigerator, how would the enzyme be affected?
Answer:
The enzyme would be deactivated
Explanation:
If a meat coated with tenderizer is placed in a refrigerator, the cold environment of the refrigerator would deactivate the enzyme.
Enzymes are generally sensitive to temperature with high temperature capable of destroying the polypeptide bonds that hold the amino acids together thus denaturing their proteinous nature. At low temperatures, the molecules of the enzyme move less and less until the enzyme becomes deactivated.
anything that possesses all of characteristics of life is called an___?
What is the role of transfer dna
Answer:
The transfer DNA (abbreviated T-DNA) is the transferred DNA of the tumor-inducing (Ti) plasmid of some species of bacteria such as Agrobacterium tumefaciens and Agrobacterium rhizogenes(actually an Ri plasmid). The T-DNA is transferred from bacterium into the host plant's nuclear DNA genome.
Explanation:
hope you do well
Which of the following is the best definition of dehydration?
O A. Gain in water during a chemical reaction
O B. Loss of water during a chemical reaction
O C. The sharing of electrons between two atoms
O D. The transfer of electrons from one atom to another
Answer:
loss of water
Explanation:
cause 100
Answer:
B
Explanation:
AP3X
EMERGENCY Homework: On page xii, Claims, evidence and reasoning; Describe/define a claim, evidence and reasoning. Read the example of C-E-R, then using your model, construct your own argument by recording your claim, evidence and reasoning. You can use your etextbook too. Copy/Make the table of Claim-Evidence- Reasoning found on page xiii, in your digital notebook; Homework section. Then write down your answers.
Answer:
What exactly is CER, and how does it work?
CER all starts with a question asked by the teacher. This question is based on a phenomena or lab experience. The student’s explanation or answer, as you may have guessed, will consist of three parts: a claim, the evidence, and the student’s reasoning.
Claim
A claim is a statement that answers the question. It will usually only be one sentence in length. The claim does not include any explanation, reasoning, or evidence so it should not include any transition words such as “because.”
Evidence
The evidence is the data used to support the claim. It can be either quantitative or qualitive depending on the question and/or lab. The evidence could even be a data table the student creates. Students should only use data within their evidence that directly supports the claim.
Reasoning
The reasoning is the explanation of “why and how” the evidence supports the claim. It should include an explanation of the underlying science concept that produced the evidence or data.
Explanation:
what is the difference between abiotic and biotic
Answer:
Abiotic: Anything that is non-living or doesn't contain carbon. Biotic is any organism that contains carbon. Abiotic would be a rock, and Biotic would be bacteria or algae.
Answer:
The biotic factor or biotic component is the living organism that shapes an ecosystem. Abiotic factors or abiotic components of an ecosystem are the non-living physical and chemical composition of nature. Biotic factors depend on abiotic factors for their survival and growth
Why is the fossil record biased
Answer:
We don't have every organism that existed identified in the fossil record.
Explanation:
The fossil record is biased because we don't have a complete record of every organism that lived on Earth. It also favors organisms that had structures capable of being preserved.
From Penn Foster
Due to the fact that many early forms of life had soft bodies, the fossil record has gaps, soft creature components do not make good fossils.
What is the fossil record?This indicates that little is known about how these creatures appeared, any fossil remains that may have existed have likely been obliterated by geological processes.
One analysis of the fossil record, which revealed that a staggering 97% of palaeontological data originate from experts in high- and upper-middle-income nations, cautions that our knowledge of the history of life on Earth is biased towards the opinions of wealthier countries.
Therefore, due to geological, physical, chemical, and biological considerations, the fossil record is not only inaccurate, but it also has intrinsic biases.
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what has a greater impact on humans earth's ocean of earth's freshwater
Answer: earths ocean has more impact.
explanation:
the ocean provides a larger amount of oxygen than all the plants on earth including the amazon rainforest. freshwater isn’t as important because it doesn’t produce that much oxygen and the ocean provides more minerals and food.