Answer:
Test a leaf or two for the presence of starch in order to determine whether the plant is completely destarched. If a positive result is obtained - leaves turn blue-black, the plant should be left under in the cupboard or under the coverd bell jar for longer, until a negative result- no colour change - is obtained.
What are the types of physical quantites? pls answer in 1 minute
Answer:
Length.Mass.Time.Electric current temperature.Amount of substance.Luminous intensity.Explanation:
In physics, there are seven fundamental physical quantities that are measured in base or physical fundamental units: length, mass, time, electric current temperature, amount of substance, and luminous intensity.
Why do you think the winter layers are darker than the summer layers in the ice core?
Screen shot is included
Answer:
Why do you think the winter layers are darker than the summer layers in the ice core? The winter layers are darker than the summer layers because little snow falls in the winter. ... The summer layers are lighter because the snow that falls in the summer is cleaner; there are fewer particles caught in the snowfalls.
Explanation:
You can put it in your own words if you want. Hope this helps!
The winter layers are darker than the summer layers in the ice core because the summer snow is less tightly packed with particulate matter, therefore, it is brighter while the winter snow is more tightly packed due to the compaction and therefore it is darker.
What do you mean by Ice core?Ice core may be defined as a structure of ice in a cylindrical shape which are plugged from the ice sheets or glaciers.
In winter, the snow that falls on the earth's surface is mixed with the more particulate matter due to compaction and hence it looks more darker as compared to summer snow.
Therefore, it is well described above.
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pls ion have that much time
Which of the following statements best compares homologous and analogous structures? Homologous structures occur because of a common ancestor. Analogous structures show a common evolutionary path. Analogous structures occur because of a common ancestor. Homologous structures show a common evolutionary path. Both homologous and analogous structures occur because of a common evolutionary path. Both homologous and analogous structures occur because of a common ancestor.
Answer:
Hello, It should be "Homologous structures occur because of a common ancestor and Analogous structures show a common evolutionary path
Explanation:
Have a great day! If your like me, this is a question off of an exam on oddessyware so if it is good luck!
Answer:
"Homologous structures occur because of a common ancestor. Analogous structures show a common evolutionary path." is correct :)
The proper order for the classification of organisms is
Answer:
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
An easy way to remember this is Dear King Phillip Came Over For Good Spaghetti.
What particle travels in electromagnetic electromagnetic wave?
A. Proton
B. electron
C. neutron
D. Photon
Which statement identifies the body systems that are directly involved in the interaction
described and explains how they accomplish the interaction?
Answer:
Organ systems of the human body interact to maintain a balanced internal environment,As blood flows
Explanation:
through certain organs of the body, the composition of the blood changes because of interactions with those organs. state one change in the composition of the blood as it flows through the respiratory system.
Answer:
The reproductive system produces the ovum, and the muscular system causes the migration of the ovum by peristaltic contractions.
Explanation:
The atmosphere is a dynamic system, meaning it changes continuously. It is affected by
A) sunlight
B) carbon dioxide
C) Oxygen
D) human activities
E) all of the above
Answer:
All of the above
Explanation:
bicycle tyres become flat when the weather is cold.Why?
Answer:
The tires lose air pressure in the winter because it contracts. If you have 35 lbs in the summer, with 85 degrees, when it gets cold, down to -10, your air pressure can get down to about 25 lbs. So before it gets bitter cold, inflate your tires up a little. You don’t want to be putting air in your tires once it is freezing out. Sometimes the schrader valve doesn’t seat properly because of frost and the rubber seal is hard. I have had several tires go flat on me because of this.
Explanation:
In what ways can the
environment impact the traits of an organism?
Answer:
Heyaa!! My name is Pinky and i'm here to inform you that your answer is...
Explanation:
!!! an organism will adapt to survive an environment. For example if an environment is very cold the organism will develop a thicker coat to trap in heat. Another example is if it is an environment with many trees, an organism might develop claws to climb trees or a tail to assist with balance and climbing !!!
Have a nice dayy!!
~Pinky~
Answer: Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal's genes are expressed, which ultimately affects the animal's phenotype. Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions. include temperature, food, pollutants, population density, sound, light, and parasites. brainliest?
Explanation:
¿a que llamamos uniones quimicas ?
Which part of the atom carries a positive charge and determines the atomic number?
Electron
Neutron
Nucleus
Proton
16. In the context of the personality research methods, determining the effect of one or more variables on behaviour....
Answer:
an experiment
Explanation:
In the personality research methods, an experiment is the method determines the effect of one variable or more variables on the behavior. In personality research methods, we conclude that :
-- it can be stable as well as predictable
-- it is based on the behavior and the personality traits
-- it is resistant to the sudden changes
Question 4
In this Food Web Pyramid Which type of consumer gets only 10% of the energy stored in plants?
A. Herbivore
B. Carnivore
C. Omnivore
D. Secondary Consume
Answer:
Herbivore, of course, I'm really sure that we all know exactly what a herbivore is, but as a refresher, a herbivore is like a vegetarian, they have a diet strictly based on plants. Carnivore's eat meat, not vegies, and an omnivore eats both, most humans are labeled as omnivores, except vegetarians. So your answer is Secondary Consume. This is because they only receive 10% in vegies, Primary Consume get 90%, Herbivores are Primary Consume's.
which of the following is true about macromolecules
Answer:
i think A
Explanation:
A macromolecule is a very large molecule, such as a protein. They are composed of thousands of covalently bonded atoms. Many macromolecules are the polymerization of smaller molecules called monomers.
pa brainlies po pls
The statement that is true as regards macromolecule is Amino acid are bonded together to make a protein.
What are macromolecule?macromolecule can be regarded as the big molecules which are the composition of smaller molecules.
For instance, very large molecule, such as a protein or carbohydrates.
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Pls help!!!
Graph (see next page for graph paper grid)
Using the data from the Coal Production Table, create a graph of coal usage in each region over
the years. The x-exis should be years, and the y-axis should be coal production. Use a different
symbol or color to represent each region. Remember to include titles and labels.
Scan or take a picture of your graph and submit it with your assignment
.
Analysis
Changes over time are called trends. You can see on the graph a downward trend in the
Appalachian and Interior regions and an upward trend in the Western region.
Try predicting future coal production. Using a ruler, draw the lines for each region. Go beyond
2011. Draw the line with the same pattern it follows on the graph. The extension of the lines is
based on what you predict will happen with coal production.
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Questions
1. How much coal will be produced in the year 2020 for each region?
2. What trend would you predict for the next ten years for each region?
.
3. If people keep using coal in the same way, scientists say there may be enough coal reserves
to last 200 to 300 years. Does your graph show trends that match what scientists say? What
kinds of factors might cause them not to match?
4. Can you think of any problems that could come from using only 15 years of data to predict
trends for the next 100 years? Explain your answer. How could you prevent some of these
problems?
Answer:
Try this.
Explanation:
I'm not too sure because the teacher never gave me enough information (Need Bigger Graph). Get bigger graph paper as it says "The X-axis should be years and the Y-axis should be coal production." On the X-axis (Horizontal Line) write "Years" and on the Y-Axis (Vertical Line) write "Coal Production."
Now, your gonna start listing all the years on the X-Axis 1996 through 2011, And on the Y-Axis list all the coal productions 145 and all the numbers through 634. Make sure you have the regions, Appalachian, Interior and Western.
I'm sorry if this didn't help, this is what I did and it helped me, I thought it might help you too.
:3
A ray of light travelling in medium 1 strikes and travels into another transparent medium, medium 2. If the speed of light is greater in medium 1, the ray will
The question is incomplete, the complete question is;
A ray of light travelling in medium 1 strikes and travels into another transparent medium, medium 2. If the speed of light is greater in medium 1, the ray will ............ *
refract away from the normal.
undergo total internal reflection.
refract towards the normal.
have an angle of incidence smaller than the angle of refraction.
Answer:
refract towards the normal.
Explanation:
Refraction refers to the bending of light waves or change in the direction of light waves as a result of change in the speed of light at the boundary between two media.
Whether the rays bend towards or away from the normal depends on the density of the both media. When light travels from medium 1 to medium 2 and medium 1 is less dense than medium 2(shown by a greater speed of light in medium 1 than medium 2) then the ray of light refract towards the normal and vice versa.
as you move upward away from sea level.
In general, atmospheric pressure is greatest near Earth's surface and
decreases
stays the same
b. increases
d. doubles
a.
C.
Please select the best answer from the choices provided
A
B
C
С
D
Answer:
decreases
Explanation:
Order the events to describe ionic compound formation
Attraction of oppositely charged ions
Formation of ions
Transfer of electrons from metal to nonmetal
Answer:
Transfer of electrons from metal to nonmetal, Formation of ions, Attraction of oppositely charged ions.
I am very late, sorry ):
In the pictures above, someone is holding ice cubes; it feels cold and they begin to
melt. Which of the following describes what is occurring?
Answer:
As shown in the pictures above, the ice is absorbing heat energy from the hand and the surroundings, which results in the melting of the ice- a process of change of state from solid to liquid. The hand feels cold .
Note: The question is incomplete as it is lacking some details.
Explanation:
Melting is a change of state process which involves the change from solid to the liquid state. Solids when they absorb heat, change to liquids at a temperature known as the melting point. This change of state occurs because the molecule of the substance acquires enough energy which to be able to overcome the intermolecular forces holding the ice crystals together, as a result, the molecules begin to melt.
In the picture,the melting of the ice held by the hand is because the ice absorbs heat from the hand as well as from the surroundings . As a result of this loss of heat from the hand, the hand feels cold after. The process of this heat transfer is by conduction whereby heat is conducted away from the hand in order to melt the ice which is contact with the hand.
The root system of a grass plant interacts with the vascular system to increase the ability of the plant to Group of answer choices
a.absorb carbon dioxide for photosynthesis
b.manufacture pigments for protection
c.obtain nutrient molecules
d.carry on gas exchange and absorb inorganic substances
The root system of a grass plant interacts with the vascular system to increase the ability of the plant to obtain nutrient molecules. That is option C.
Importance of the root systemThe plant is made up of the root and the shoot systems which continually communicates for the growth and maintenance of the whole plant.
The root system is part of the plant that grows downwards. It has the following functions:
It holds the plant to the soil.It absorbs water and nutrients from the soil.It Conducts absorbed water and nutrients to stemTherefore, the root system of a grass plant interacts with the vascular system to increase the ability of the plant to obtain nutrient molecules.
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The layer is above stratosphere and below thermosphere, this is where meteors and rock fragments burn up and is
the coldest layer of the atmosphere. This is
A) troposphere
B) stratosphere
C) mesosphere
D) thermosphere
In feedback inhibition, does an enzyme’s substrate attaches to an allosteric site?
Answer:
They bind to an allosteric site which induces a conformational change that increases the affinity of the enzyme's active site for its substrate. This increases the reaction rate.
Which nonmetal is used as a food?
O rock gypsum
O rock salt
O quartz
O talc
Answer:
B. Rock salt
Explanation:
Answer:
B. Rock salt
Explanation:
The principle of natural selection states that the best adapted organisms are most likely to survive and reproduce. Was this demonstrated in your experiment? Explain.
Answer:
Yes
Explanation:
Natural selection was first postulated by Charles Darwin. It is the idea that organisms that are best adapted to their environment are able to survive and reproduce thereby transmitting their favorable characteristics to their offspring.
In our experiment, the insects that were able to survive were allowed to reproduce thereby transmitting their favorable characteristics to their offspring. This is a demonstration of natural selection.
Hypothesize what could happen if finches from one island of the
Galapagos were relocated to another island.
Someone help me please
All of the following are true except?
-Nucleotides are the building blocks of proteins.
-A gene is a segment of DNA that codes for proteins which make your traits.
-Splicing removes exons from pre-mRNA.
-During transcription, adenine pairs with uracil instead of thymine on mRNA.
What gland is essential to the menstrual and ovarian cycles
a.adrenal
b.thyroid
c.pituitary
plz help i need this asap!!! Which characteristics do all bony and jawless fish have in common? Check all that apply.
backbone
swim bladder
scales
gills
bony skeleton
Answer:
Gills, Scales, swim bladder, and backbone.
Give 4 ""combining evidence"" in favor of organic evolution.
Answer:
1. Fossil record
2. Comparative anatomy
3. Embryology
4. Biogeography
Explanation:
Evolution is descent with modification. The organic evolution theory states that present complex life forms have evolved from the earlier (simpler) forms of life over time. Some of the most important pieces of evidence in support of the theory of organic evolution are:
1. Fossil record: fossils are dead remains of past living organisms preserved in the rocks of the remote past. These fossils demonstrate the existence of past living organisms that are related to present-day organisms.
2. Comparative anatomy refers to the study of similarities in the anatomy of different species, which provides direct evidence for identifying common ancestry between related species.
3. Embryology: the more recent the ancestor is that two species share, the greatest similarities in embryo structures and the more closely related the species are. In this regard, it is important to highlight that often homologous organs/structures (i.e., organs/structures descended from a common ancestor) can be observed only in embryos.
4. Biogeography refers to the spatial distribution of organisms and species. Species distribution reflects the evolutionary process when it is combined with geological change. For example, taxa that had already appeared before the separation of the continents are often distributed worldwide.
How does the proportion of hydrogen and helium in the universe support the Big Bang theory?
A. It is the proportion predicted to be present in the early universe.
B. It demonstrates the rate of expansion predicted by the theory
C. lt proves that matter must be formed under high temperatures
D. It shows that only simple elements are present in the universe
Answer:The answer is A
Explanation:I have had the question before
Answer:
it is a
Explanation: