Answer:
amount of copper
Explanation:
The independent variable would be the amount of copper fed into the experimental rats.
An independent variable during an experiment is a variable whose value is not dependent on any other variable being measured in the experiment.
The value of an independent variable is not changed by any other variable in an experiment. In actual fact, the effect of the independent variable is being tested on other variables (dependent variables) in the experiment.
Hence, in an experimental study of the effect of copper deficiency on coat color in rats, the amount of copper fed into the system of the rats will be varied and the effects of this variation on the coat color of the rats would be observed by measuring relevant variables. Therefore, the amount of copper is the independent variable.
1 pc
If
you are given a quadrat of 1.5 square meters and you count the
dandelions in 10 quadrats and find an average of 2 dandelions per quadrat
area. Use this information to estimate the population density of dandelions
per square meter in a 4500 square meter open field. (make your answer
just the number, round to the nearest 2 decimal places) *
Your answer
In a stable population of rabbits and wolves a government agency enacts a 1 point
Answer:
1.33 dandelions per square meters
Explanation:
The correct answer would be 1.33 dandelions per square meter of land.
Size of quadrat = 1.5 square meters
Average number of dandelions per quadrat = 2
Total study area = 4500 square meter
Population density = number of organisms per unit area
There were 2 dandelions per 1.5 square meters
How many would be per square meter?
= 2 x 1/1.5 = 1.3333 dandelion per square meters
To 2 decimal places = 1.33 per square meters
Killing pathogens and then using them to provide the body with active immunity is called ______. This is often done in young children.
When the immune system treats otherwise harmless substances, such as pollen, as if they were invaders, a/n ______ can occur.
HIV is a virus that attacks ______ in the body, weakening the immune system.
Polio used to be fairly common and devastating. Thanks to widespread vaccination against polio, the disease is now considered _______, no longer infecting nearly as many people as it once did.
Arthritis is an example of a/n _______, where part of a person’s body is identified as foreign and attacked by the person’s immune system.
Respond to the following based on your reading.
Colonization is largely blamed for bringing smallpox to the Americas. Why was this disease so devastating to Native Americans? Why can we now travel to different parts of the world and avoid contracting analogous diseases?
Answer:
Killing pathogens and then using them to provide the body with active immunity is called IMMUNIZATION . This is often done in young children.
When the immune system treats otherwise harmless substances, such as pollen, as if they were invaders, a/n ALLERGY can occur.
HIV is a virus that attacks WHITE BLOOD CELLS in the body, weakening the immune system.
Polio used to be fairly common and devastating. Thanks to widespread vaccination against polio, the disease is now considered ABSENT, no longer infecting nearly as many people as it once did.
Arthritis is an example of a/n AUTOIMMUNE DISORDER where part of a person’s body is identified as foreign and attacked by the person’s immune system.
Immunization helps involves the injection of dead pathogens into the bloodstream. This helps in the release of antibodies which helps in protecting the body against further attacks in the future.
Allergy happens as a result of the body system treating and attacking harmless substances.
This is because the ships which brought immigrants into the country had someone who had small pox on board which spread and many got infected and killed due to lack of vaccine and treatment.
Immunization helps people to travel without having to worry about diseases.
Answer:
vaccination
allergic reaction
t-cells
eradicated
autoimmune disease
Europeans had been exposed to the virus that causes smallpox for many generations, allowing them to acquire immunity to the virus. Native Americans were not exposed to smallpox or similar viruses before, so they had no immunity to the virus. In modern times, before traveling abroad, a person often receives vaccinations or other medications to avoid contracting the diseases specific to that region of the world.
Explanation:
Which of these stopped operating in 2011? A. space shuttle program B. Kepler Space Telescope C. Hubble Space Telescope D. International Space Station
Answer:
space shuttle program
what is current pandemic disease spreading in the world
Answer:
Corona disease ( There is no specific treatment for disease caused by a novel coronavirus)
Explanation:)
The virus can cause a range of symptoms, ranging from mild illness to pneumonia. Symptoms of the disease are fever, cough, sore throat and headaches. In severe cases difficulty in breathing and deaths can occur.
.
HAVE A NICE DAY !
Answer:
Corona Virus.
Explanation:
Felipe believes that whenever the Moon is in the position that is shown from above (top view) in Diagram A, the Moon always looks completely bright in the view from Earth, as shown in Diagram B. Is Felipe correct? If he is correct, explain why the Moon always looks bright from Earth in that position, and explain how he should show light on the Moon in Diagram A. If he is incorrect, explain how else the Moon can look when it is in that position.
Answer: Felipe is wrong.
Explanation:
In diagram A, we can see that the light comes from the left, it first impacts on the Earth, and then we have the Moon.
Now, you can model this situation with a flashlight (the Sun) a basketball (the Earth) and a tennis ball (the Moon)
When you point with the flashlight at the basketball, the basketball will look bright, but it will cast a shadow behind it. This shadow will cover the tennis ball, and almost no light will reach the tennis ball, so it will not look bright.
This phenomenon is called a lunar eclipse, and this happens when the Earth is in between the Sun and the Moon. When this happens, we see the moon a bit darker and more reddish.
Felipe is incorrect, as it will not be possible to see the moon if it is in the position shown in the diagram.
We can come to this answer because:
It is only possible to see the moon when it is reflecting sunlight.In this case, no other type of celestial body must be in front of the moon, blocking the sunlight.As we can see in the question above, sunlight is being emitted from left to right.Although the moon is in the right direction to reflect this light, the earth is in front of the moon.Therefore, sunlight will not shine on the moon, because the earth will block it and cast a shadow over the moon.Therefore, it will not be possible to see the moon, as Felipe said.
More information:
https://brainly.com/question/1285426?referrer=searchResults
what is mitochondria a place of in chloroplast once being free orginisms
Answer:
Power house of the cell
Answer:
powerhouse of the cell
Explanation:
What is chemical energy, and where is it found in
everyday life?
Answer:
Chemical energy is stored in chemical bonds and you can find it in the foods we eat.
Explanation:
Answer: Chemical energy are stored in Chemical bonds an example is sodium chloride
Explanation:
Sodium chloride is in Short is Salt. Which have been used to season foods for thousands of years.
suggest why the starch and enzyme solutions were kept at 35°C
Answer:
(42) is
[tex]x785[/tex]
Which one of these contains an atom of phosphorus?
Nitrogenous base Pentose Sugar Phosphate Group
What function do most of the stem cells in adults serve?
A. Differentiating into any type of cell
B. Repairing damaged DNA
C. Replacing damaged tissue
D. Growing new organs
If one strand of DNA double helix has the following nucleotide sequence ATCGGTCAAGCTAGG what would the dna complementary stand read
Answer:
TAGCCAGTTCGATCC
Explanation:
In DNA, there are 4 different nucleotide bases. Adenine (A), Thymine (T), Cytosine (C) and Guanine (G).
A (adenine) always pairs with T(thymine) and C(cytosine) always pairs with G (guanine).
If we have the strand:
ATCGGTCAAGCTAGG
We have to pair A with T, and C with G. Therefore, the complementary strand of DNA will be:
TAGCCAGTTCGATCC
So how you liking Earth? Are you loving your existence ?
No, not really. I'm only here because I need points so ask a question for school.
Answer:
CHING CHONG CHINKY WONG
Explanation:
Assignment 2
1. In a tabular form, outline the functions of the following parts of the human respiratory
system
a. Nasal passages
b. Nasal hair
C. Mucus membrane
d. Pharynx
e. Epiglottis
f. Glottis
g. trachea
h. Rings of cartilages
i Larynx
j. Alveoli
please help
Answer:
a. The function of the nasal cavity is to warm, moisturize, and filter air entering the body before it reaches the lungs. Hairs and mucus lining the nasal cavity help to trap dust, before it reached the inner portions of the body.
b. It filtered the air to protect you from illness irritation of the respiratory tract
c. It traps smaller particles like pollen or smoke.
d. It regulate the passage of air to the lungs and food to the esophagus. The throat, is the passageway leading from the mouth and nose to the esophagus and larynx.
e. It seal off the windpipe during eating, so that food is not accidentally inhaled.
f. Glottis opens into the windpipe and is responsible for the production of sound
g. It serves as passage for air and warms it while it passes into the lungs, and protects the respiratory surface from an accumulation of foreign particles.
h. It helps support the trachea while still allowing it to move and flex during breathing.
i. It produces vocal sounds and prevents the passage of food and other foreign particles into the lower respiratory tracts.
j. It takes up the oxygen you breathe in and keep your body going.
Explanation:
Where do electrons get their energy in photosystem II? A. From energy in photons B. From ADP and ATP C. From NAD and NADPH D. From glucose in Calvin cycle
Answer:
The photons get captured and their energy is to used to give energy to the electrons.
Answer:
From energy in photons
Computers would also help kids apply for schools and jobs.
Which of the following is relevant evidence supporting the
claim?
Students who want to go to Brentview
Arts must fill out an online application.
Our parents say Brentview Arts
Magnet School is one of the best
schools in the neighborhood.
Many of us plan to look for part-time
jobs in the summer,
The school also asks for
recommendations, but these can be
sent in by regular mail.
Answer:
students who want to go to Brentview Arts must fill out an online application
Explanation:
if the only way to get into Brentview Arts is by doing an application online, then computers would help those students. They can't send it through the mail so the computer would be their only resource
Explain the unique bonding properties of carbon.
Carbon , hence overcomes this difficulty by sharing its four valance electrons with other atoms of carbon or with atoms of other elements.
What do you mean by valence electrons?A valence electron is an electron in the outer shell associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed.
Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.
For neutral atoms, the number of valence electrons is equal to the atom's main group number. The main group number for an element can be found from its column on the periodic table.
Learn more about valence electrons:
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How is the availability of resources affected by the increase in human populations in a given geographic area?
Answer:
Increase in population less resources avilable
Explanation:
Increase in population means more demand for resources hence in a certain geographic location the resources available will be limited as the population grows. Therefore the availability of resources will be affected by the incraese in population
How do you think the four tissue types support the function of the heart? How do the different tissue types support the idea that systems of specialized cells are critical for body functions?
Answer:
The heart is made up of the four types of tissues. The four different tissue types work together in the heart as they do in the other organs.
Explanation:
Are bats blind?Non scientific or scientific question?
Answer:
No, bats are not blind. Bats have small eyes with very sensitive vision, which helps them see in conditions we might consider pitch black. They don't have the sharp and colorful vision humans have, but they don't need that.
Explanation:
SHORT ANSWER:
Explain the function of 2 important cell organelles that play role in protein synthesis
Answer:
Ribosomes and Endoplasmic Reticulum
Ribosomes are the organelles responsible for protein translation and are composed of ribosomal RNA (rRNA) and proteins. ... If the protein in question is a cytoplasmic protein that will not be transported to the cell membrane or secreted, it will be translated on a cytoplasmic ribosome.
hope it helps : D
Explanation:
Pleaseee help me out.
The T allele codes for tall stems in pea plants and the t allele codes for short stems. If T is
dominant and t recessive, what percentage of the offspring would you expect to have each
phenotype from a cross of Tt x tt?
a. 75**
tall and 25% short
b. 25% tall and 75% short
C. 50% tall and 50% short
d. 25% tall and 25% short
Answer:
50% tall and 50% short.
Explanation:
T t
t Tt tt
t Tt tt
Genetic disorders can result when sister chromatids fail to separate properly. During which phase is this problem most likely to occur?
A: g1 phase
B:g0 phase
C: Cytokinesis
D:Mitosis
In light-dependent reactions, the oxygen leaves the plants through the ________. *
A. stomata
B. vein
C. cuticle
Answer:
The Stomata
Explanation:
It transpires water & creates a vacuum to draw more water up the stem
Answer:
A. stomata
Explanation:
In light-dependent reactions, the oxygen leaves the plants through the stomata.
Needed ASAP
The point where the lever rocks back and forth is called _______ or ________
Answer: the fulcrum
i don't know the other one
What is the evidence for evolution?
Answer:
foills
Explanation:
provide solid evidence that organism from the past are not the same as found
Use the drop-down menus below to identify the organ(s) that is/are responsible for each function of the
excretory system.
releases excess heat from body
reabsorb water to maintain normal composition and volume of blood
and fluids and prevent dehydration
excrete wastes that balance salt
Explanation:
releases excess heat from the body, which would be sweat glands, excretory system/
reabsorb h2o 2 maintain norm. composition, volume of blood=kidneys.
Answer:
1.skin
2.kidneys and large intestine
3.skin, large intestine, and kidneys
Explanation: got it right
Which type: Land breeze or sea breeze would most likely form on a warm, cloudless, summer day? How do you know? Explain
THXSSS PLEASE HELP AND HURRY
Answer:
Explanation:
Sea breeze is a breeze that comes from the ocean to the land. The breeze is usually more when the temperature difference between land and ocean is high especially when it is summer and hot afternoon.
When the temperature is hot both land and water are been heat up, the land begin to release heat and warm air will rise over the land. Water do not get heat up easily hence the air is cooler leading to high pressure on the ocean air then blows from here to the land.
Answer:
Sea breeze.
This is because sea breeze occur on hot summer days which is due to unequal heating on the land surface and sea surface
Explanation:
Land and Sea breezes are as a result of different rate of heating on land or sea surfaces along coastal areas.
Sea breeze occur in a warm, cloudless summer days because of the unequal heating of the land and water surfaces.
During the day, the land surface heat more that the water surface. The air that is above the land become warm and it is warmer than that on the sea surface but the warm air is lighter than cool air. The warm air above the land surface rise, and the cool air on the sea surface rises and replaced the land warm air . This is sea breeze
Why is the use of iodised salt advisable?
Answer:
as iodine is necessary for our body......
Explanation:
Iodized salt is advisable due to the iodine it contains.Iodine is a mineral that is essential for the body,it helps prevent goiter. (the inflammation and swelling of the thyroid gland)
I hope this helps you.
why are data organized into tables and graphs?
True or False. Natural disaster disturb most populations within a community and break interactions between organisms