Answer:
A controlled experiment is a test where the person conducting the test only changes one (or very few) variable at a time in order to isolate the results and determine the effect or influence of the variable. Such an experiment may be one where all subjects involved in the experiment are treated exactly the same except for one deviation.
Explanation: If garlic repels fleas, then a dog that is given garlic every day will not get fleas. If sugar causes cavities, then people who eat a lot of candy may be more prone to cavities. If ultraviolet light can damage the eyes, then maybe this light can cause blindness.
PLEASE HURRY fast and I mean fast and awnser the ones that haven't been awnsered
Answer:
i didn't understand can u explain?
Look at the Venn diagram comparing traits of the Sun, Earth, and the Moon. Which items could correctly go in section B? A) Reflects light B) Has rocky composition C) Has a thick atmosphere D) The largest object in the solar system E) Located in the center of the solar system
The Venn diagram comparing the characteristics of the Sun, Earth and Moon the item in section B would be that the moon and the earth reflect light and have a rocky composition.
The moonThe moon is a natural satellite of planet Earth. She is the only celestial body to receive human beings.
The SunThe Sun is large and contains a lot of hydrogen, being held by strong gravity. As a result, the pressure and temperature inside are very high, causing hydrogen atoms to collide with each other, in what we call nuclear fusion, and generate helium.
Planet EarthPlanet Earth is a group of millions of structures of living organisms that hold the power to preserve life. The Earth formed about 4.5 billion years ago, is located in the middle of the Milky Way, being the third-closest planet to the Sun and the fifth largest among all the planets that make up the Solar System.
The Sun, Earth and Moon have in common that the item in section B would be that the Moon and Earth reflect light and have rocky composition.
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Name the part of a seed which allows water and air in to seed
If the pores in the dialysis tubing were too small to allow iodine potassium to pass through, would the liquid in the tubing turn black?
Yes or no?
Based on selective permeability, if the pores in the dialysis tubing were too small to allow iodine potassium to pass through, the liquid in the tubing would not turn black.
What is Selective permeabilitySelective permeability refers to the ability of a membrane to allow some molecules to pass through it but no others.
In the dialysis tubing, selective permeability is used to remove some substances but not others.
The selective permeability of the dialysis tubing depends on the pore size.
When a dialysis tubing containing starch solution was dipped into a beaker containing iodine, the solution in the tubing turned black due to the ability of iodine molecules to pass through the membrane.
However, if the pores in the dialysis tubing were too small to allow iodine potassium to pass through, the liquid in the tubing would not turn black.
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Which statement is true about wood
The answer you have chosen is the correct one
13. Which of the following is the most challenging issue facing genome
sequencing or organism modification?
a. availability and stability of DNA
b. ethics of using information from genomes at the individual level
c. inability to develop fast and accurate sequencing or modifying
techniques.
d. all of the above
_______14. What carries a gene from one organism into a bacterial cell?
a. a plasmid c. electrophoresis gel
b. a restriction enzyme d. polymerase chain reaction
_______15. When was the Polymerase Chain Reaction discovered?
a. 1963 c. 1983
b. 1973 d. 1993
Answer:
13) B) Ethics of using information from genomes at the individual level
14) A) a plasmid
15) C) 1983
~
Hope this helps!
Some horses exhibit co-dominance for coat color with red and white coats. If a red horse (RR) mates with a white horse (WW), what percentage of the offspring will be RW, and what will the coat color of the offspring be?
Group of answer choices
100%, all red
50%, spotted red and white
100%, spotted red and white
100%, all white
15.Which of the following statements refers to weather?
a. “It rains a lot in the Spring in my city.”
b. “It’s very hot and sunny today. Let’s go to the beach.”
c. “There are many people who don’t believe there is a hole in the ozone layer’”
d. “We are going south to Florida in January because it will be warmer.”
16. The water cycle is the continuous movement of water on, in and above the Earth. Which of the following describes evaporation in the water cycle?
a. Water vapor meets cold air and changes back into a liquid
b. Plants take in water from the soil
c. Water gets heated and changes from liquid water to water vapor
d. Water freezes
17. Hurricanes form in tropical water between 8 and 20 degrees north and south of the equator. Hurricanes rarely form a higher latitudes because the water is too
a. warm
b. deep
c. shallow
d. cold
Answer:
16. The water cycle is the continuous movement of water on, in, and above the Earth. Which of the following describes evaporation in the water cycle?
a. Water vapor meets cold air and changes back into a liquid
b. Plants take in water from the soil
c. Water gets heated and changes from liquid water to water vapor
d. Water freezes
Explanation:
the question is on the attachment
Answer:
It controls activities
Explanation:
X is the nucleus of the cell which is sometimes know as the 'brain' of the cell because it controls activities. It contains DNA that is needed to conduct most of the cell's functions.
What is a complementary mRNA strand to the shown DNA sequence
Answer:
The tRNA anticodon sequence is a three nucleotide sequence in the tRNA that base-pairs with a codon.
The mRNA codon is the three nucleotide sequence in the mRNA that codes for an amino acid. T
The tRNA anticodon sequence is complementary and anti-parallel to the mRNA codon sequence.
It takes the Earth _______ to complete one revolution around the Sun.
Answer:
365 days
Explanation:
Earth to go around sun=365 days
Hope it helps.
As the demand for more paper grows, more forests are being cut down. How will this most likely affect forest environments?
A. It will cause more animals to immigrating into forests.
B. It will cause more animals to lose their habitats.
C. It will cause the nutrients in the soil to increase.
D. It will cause temperatures in the atmosphere to decrease.
Chloroplasts are the organelles in plant cells that convert solar energy to chemical energy (sugars) that can be used by the cell. Mitochondria are organelles in all eukaryotic cells that convert sugars to ATP Both organelles are have double membranes and contain their own set of DNA. What is the likely explanation for this?
The chloroplasts and mitochondria are known as the membrane bound organelles.
Membrane bound organellesThe cells of living organism contain membrane bound organelles which are surrounded by their lipid bilayer and they contain their own set of DNA.
Example of membrane bound organelles are:
Chloroplasts: This organelle contains chlorophyll which convert solar energy to chemical energy (sugars) that can be used by the cell during photosynthesis.This is found only in plants which are producers.
Mitochondria: This organelle is found in animal cells which are used to convert sugars to ATP.Therefore, the chloroplasts and mitochondria are known as the membrane bound organelles.
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What are marine algal blooms, red tides, and dead zones? How might biological magnification play be part in human illness?
Answer:
Cyanobacteria, a type of photosynthetic bacteria also known as blue-green algae, are often the cause of algal blooms in freshwater and occasionally in marine water. ... Cyanobacteria HABs produce multiple toxins, including liver, nerve, and skin toxins, which can affect human and animal health.
Many red tides produce toxic chemicals that can affect both marine organisms and humans. The Florida red tide organism, K. brevis, produces brevetoxins that can affect the central nervous system of fish and other vertebrates, causing these animals to die.
Explanation:
In desert areas covered with black rock from ancient lava flows, rock pocket mice with darker fur are common. In other areas of habitat with lighter-colored rock, the rock pocket mice tend to have lighter-colored fur. For rock pocket mice, fur color is an example of
For rock pocket mice, fur color is a phenotype
What are phenotypes?Phenotypes refer to the morphological characters of organisms.
In other words, phenotypes refer to the physical appearance of living organisms.
In this case, the appearance of the rock pocket mice varied from darker fur on the black rock to lighter-colored fur on the lighter-colored rock. This means that the phenotype varies with the environment.
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Decomposers are …….??.?.
Answer: Decomposers is an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
Explanation:
Why do we wear white or light coloured clothes in summer?
Why do we wear black or dark coloured clothes in winter?
Answer:
Why do we wear white or light coloured clothes in summer?
We wear white or light coloured clothes in summer because white coloured clothes reflect most of the sun's heat and absorb very little of the sun's heat and keeps our body cool.Why do we wear black or dark coloured clothes in winter?
We wear black or dark coloured clothes in winter because black coloured clothes absorb most of the sun's heat and keep our body warm.Explanation:
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Answer 1 :-In summer we generally prefer white or light coloured clothes because :-
Light or white coloured clothes are bad absorber or a good reflector of heat . So when light rays falls on any white or light coloured clothes. they reflect that rays and absorb negligible of it . Light or white coloured clothes also allow the heat to escape from your body which makes you feel cool for a long day . Light or white coloured clothes are also act as a good absorber of sweat so when people sweat .Then as a good absorber , they absorbs it and you will feel coolAnswer 2 :-In winter we generally prefer dark or black coloured clothes because :-
Black or dark coloured clothes are good absorber and bad reflector of heat. When light rays falls on any black or dark coloured clothes it absorbs all the heat especially black coloured clothes. This happens because different colours have different wavelength. On the other hand, black colour has the ability to absorb all different types of wavelength of visible colour that is why it act as good absorber. The black or dark coloured clothes absorb all the heat and allow negligible heat to escape and due to this our body feels warm It is also act as good soaker of sweat just like white coloured clothes.Help please, I will gibe brainly for the correct answer!
Chloe, age 5 is going to the store to buy her father a birthday present. She picks out a stuffed animal, a Barbie doll, and a whoopee cushion. Her choices are ___________ which is indicative of her being in the _________ stage.
conservation; preoperational
egocentric; preoperational
theory of mind; sensorimotor
When people use a biopsychosocial approach informed by a number of different psychological theories they are very likely to gain a…
high five
comprehensive understanding of a family's ethnic origin.
comprehensive understanding of an individual's development.
We can conclude that, Barbie's choices are egocentric which indicates her being in the preoperational stage of Piaget's theory of cognitive development.
People who use a biopsychosocial approach are most likely to gain a: comprehensive understanding of an individual's development.
What is the Preoperational Stage?
The preoperational stage is the second stage in Piaget's theory of cognitive development, which is characterized by:
EgocentrismSymbolic representationThe preoperational stage begins from 2 years of age up to 5 years of age. At this stage, children tend to use symbols to represent their own world.
According to Piaget, children tend to be egocentric during the preoperational stage, which explains why Chloe will get a gift like a Barbie doll for her dad. This shows Chloe, at this stage, cannot understand that her dad think in a different way she thinks.
Therefore, we can conclude that, Barbie's choices are egocentric which indicates her being in the preoperational stage of Piaget's theory of cognitive development.
What is the Biopsychosocial Approach?In psychology, the biopsychosocial approach is a wide approach that takes into consideration biological, social, and psychological factors, and how they interact to influence health care delivery, illness and health.
Therefore, people who use a biopsychosocial approach are most likely to gain a: comprehensive understanding of an individual's development.
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what is the meaning of satae
What was the first blood type to appear in the world?
What is the dominant generation in monocots?
The gametophyte is the dominant generation
How does carbon dioxide move from the atmosphere to ocean water?
Answer:no
Explanation:
no it dose not
If a mineral can scratch fluorite and it can be scratched by a knife what is the hardness of the mineral
Answer:
The hardness rating is 4.
Explanation:
Calcite sits at a hardness rating of 3 and is very easily scratched with a knife and/copper coin. This is where most Marbles, limestones, travertines, rate.
Meanwhile, Fluorite sits at hardness 4 and can be scratched by a knife.
Kim has a soil that is too acidic, Kim has oil which is too acidic. what should she do?
a Add CaCo3 to bring the soil to a pH of 7
B. Add CaCo3 to bring the soil to a pH of 13
C. Add H2504 to bring the soil to a pH of 13
D. Add H2504 to bring the soil to a pH of 7
There are 20 standard amino acids. Ninhydrin turns yellow when it interacts with proline. Ninhydrin turns purple in the presence of the other 19 amino acids. Can you determine the identity of each of these 19 amino acids using ninhydrin test only? why or why not
Because the ninhydrin test produces the same purple color for all amino acids except for proline, it cannot be used to identify all other 19 amino acids.
What are amino acids?Amino acids are the molecules from which proteins are made.
Amino acids contain an alpha amino and carboxyl group, with a side chain group attached.
The ninhydrin test is used to test for the presence of amino acids generally and for proline specifically.
Since the ninhydrin test produces the same purple color for all amino acids except for proline, it cannot be used to identify all other 19 amino acids.
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Can your gut bacteria make you fat? Explain?
Depends. Certain gut bacteria that may produce LPS which causes inflammation which can contribute to the process of weight gain and insulin resistance. There have been studies over the years to see what was actually the result of the guy bacteria and one test said that people who had lower gut bacteria diversity and are overweight all have levels of C-reactive protein in their bloodstream ( an inflammatory marker in the blood)
The two main types of weathering are
O mechanical and physical
Ophysical and kinetic
O chemical and physical
O chemical and acidic
chemical and physical
Explanation:
each involes a biological components at times
describe where the single cell gets the information to ultimately produce an adult human
True or false:Family members have similar genetic codes
Answer:
True
Explanation:
its just true how to explain but i know its true trust me
Help me please i need to pass
Earth and space
Answer:
I think Horizional is right ✅