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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At birth, what is the average number of red blood cells per
mm of blood?
List the characteristic features of epidermal cells.
Answer:
Epidermal cells are tightly linked to each other and provide mechanical strength and protection to the plant. The walls of the epidermal cells of the above ground parts of plants contain cutin, and are covered with a cuticle.
-identify the independent variable/dependent variable.
which plants grew taller:those in the experimental group or those in the control group?
-Describe why this is a controlled experiment.
Explanation:
a control group does not. They should be identical in all other ways.
what is photosynthesis
The three factors that created gemstones are??
I need an answer asap
Answer:
Molten rock and associated fluids. Environmental changes. Surface water. Gem formation in the Earth's mantle.
Scientific laws and theories are both based on observations and evidence how are they different?
Answer:
theory explain why something happens and laws explain what happen
Explanation:
you can remember this because in the word theory there is the letter "y" so you can remember that theories explain "y"/ why
Laws explain what happen and you can remember it bc the last letter in law is w so you can remember w is what
Answer: a theory can change into a law, but a law can't change into a theaory
Explanation:
Give one example of how the testing of Platismatia glauca could benefit future ecological research of this forest.
Answer:
Testing Platismatia glauca could help scientists understand which pollutants have the largest effect on lichen populations. It also may help scientists understand the current pollutant levels in the atmosphere compared to the population of lichens on the trees. This information can help them more accurately predict population changes over time.
hope this helps:)
Match the level of ecological organization described by each of the statement below. The birds,insects,plants,fungi, and other organisms that reside in a nearby wetland
Answer:
Community
Explanation:
The community is the compilation of the different plant and animal species population in a designated area at a particular time that interact with each other. The different species in a community have interactions with one another based on trophic levels and the supply and provision of nutrition for survival
The ecological level above the community level is the ecosystem, which is concerned with the biotic and abiotic interactions
Beloe the community level is the population, which are the number of a particular species in a location at a given point in time.
what do foxes sleep on? A.beds B.fox nest C.trampling
Answer: B. Fox nests
Explanation:
Foxes dig out dens to provide a safe underground space that is mostly used for raising fox cubs, also called kits. In urban areas, the dens - known as earths - are commonly located under sheds, but they can also be among tree roots, in bushes or on railway embankments.
Compare ionic solids and liquids
Which element is found in nucleic acids but not in amino acids
Answer:
Phosphorus
Explanation:
Answer:
Phosphorus
Explanation:
I took the quiz
Plz help ASAP thanks!!
Sodium(Na), magnesium (Mg) and sulfur (S) are all in the same_____
A:group
B: Period
They have the same number of____
A:Valence electrons
B:Electrons shells
Answer:
Sodium, Magnesium, and Sulfer are all in the same period meaning they have the same number of electron shells.
Explanation:
Periods are rows in the periodic table. The number of Valence electrons grows across the period (left to right) until reaching the electron shell's capacity.
Groups occur in columns in the periodic table and all have the same number of valence electrons, and the number of electron shells increase as you move downward on the table
When members of populations do not mate with each other or cannot produce fertile offspring, they are
Which statement best explains a way in which a cell gets rid of wastes?
A. The nucleus provides the instructions for making proteins from
amino acids.
B. A chloroplast converts energy from sunlight into organic matter.
C. Mitochondria change energy stored in organic compounds into a
usable form.
D. Vacuoles merge with the cell membrane and then open.
Answer
D. Vacuoles merge with the cell membrane and then open.
Explanation:
Answer:
D
Explanation:
I took the ∆pex quiz
The term used to define a cell that has a nucleus containing DNA.
a) Autotroph
b)Prokaryote
c) Eukaryote
d) Homeostasis
Answer:
The answer would be C eukaryote the cell that has a nucleus containing DNA I can't show a picture of it but I can tell you for sure that is that answer
TOR kinases are enzymatic proteins found in a diversity of species, from yeasts to mammals. They serve in a phosphorylation cascade that promotes progression through the cell cycle. What evidence would confirm that eukaryotes share a common ancestor with regards to cell signaling pathways?
Answer:
By phylogenetic analyses
Explanation:
The target of rapamycin (TOR) is a major regulator of growth only found in eukaryotic organisms. The TOR pathway is known to regulate critical cellular processes including, among others, cell growth. The TOR protein is a kinase capable of activating translation by phosphorylation of the ribosomal S6 kinase (S6K) and the eukaryotic translation initiation factor 4E binding protein (4E-BP). In this regard, phylogenetic studies have shown that this pathway involves duplication events of ancestral kinases, as well as sub-functionalization of the S6K kinase.
Identify the chemical change below
A.a piece of wood burns in a fire
B.two pieces of paper are stapled together
C.a large log is cut into boards
D.water is removed by drying wet clothes on a laundry line
A peice of wood burns in a fire is the answer
43, Square root of 40 , Square root of 13 , Square root of 7 , 14 over 9
Answer:
64
Explanation:
is auxin one of the most important group of plant hormones
Answer:
yes they are
Explanation:
because auxin are the most important hormones involved in adventitious root formation.
Answer:
Yes!
Explanation:
Auxin is one of the MOST important group of plant hormones! They promote the growth that is needed for plants. They produce the stems and the buds, and the tips of the roots for the plants. Without it, things would go bad, and a lot of things would go awry.
I really hope I helped you with this question!
explain why a large tree and a crop such as rice or maiz are both classified as plant
Answer:
because the all need sun, and oxygen, water to grow. I really don't know how to answer so I hope the answer above help sorry if it doesn't
Explanation:
Answer:
they both produce their own food
Explanation:
photosynthesis is a large part of their life
Somatic cells (also called body cells) are found where? Check all that apply.
A heart
B lungs
C sperm
D muscles
E eggs
Which one of these is not a volcanic island arc? (Consult a plate tectonic map if needed) Group of answer choices Hawaiian Islands Japan Indonesia Aleutian Islands
Answer:
Hawaiian Islands
Explanation:
A volcanic arc is made of volcanoes and is formed above the subducting plate and examples include the marina island in the pacific ocean and lesser Antilles. Sundra arc is a volcanic arc and the Hawaii islands are an example of the linear chain of volcanoes.Choose all of the physical changes:
(There are FOUR)
Group of answer choices
tarnish
evaporate
bend
react
melt
explode
dissolve
Answer:
evaporate, bend, melt, dissolve
Explanation:
1.
Mention any four importance of electricity in the present days?
Answer:
lighting, heating, cooling, devices
Explanation:
you have to have electricity for the following or you would not be able to change you phone
Using radio telescopes, astronomers have found evidence
that no new matter is forming in the universe, which is
what the big bang theory predicted.
This work is part of which process used in developing scientific theories?
A. Using new technology to provide additional supporting data
B. Using imagination to spark new ideas
C. Using new technology to replace outdated theories with new ideas
O D. Using new data to modify an existing scientific theory
Answer:
A
Explanation:
Scientific theories are explanations of natural phenomena that have been repeatedly examined and verified using the scientific process of observation, measurement, and analysis. Therefore, option (A) is correct.
What is scientific theory?A scientific theory is an explanation of an aspect of the natural world and the universe that has been repeatedly tested and corroborated in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of the results. In other words, a scientific theory is an explanation of something that has been proven to be true through the scientific method.
Einstein's Special Relativity, which describes the relationship between space and time for objects moving at a consistent speed in a straight line, is one of the most well-known scientific ideas. It also happens to be one of the most controversial. Additionally, the concept of time dilation is investigated by this theory.
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Question 2 of 10
Methane gas is burned to provide heat. The chemical reaction for this
process is shown in the equation below.
CH4 + 202 -> CO2 + 2H20 + energy
What are the products in this chemical reaction?
A. O2 + CO2 + energy
B. CO2 + CH4
C. CO2 + 2H20 + energy
D. CH4 + 202
9
The chemical reaction is represented by a chemical equation where we use some basic elements like:
Reactants are kept on the left hand side.Products are kept on the right hand side.They are divided by a arrow which hear towards the products.This shows that reactants are forming or giving rise to different products in the reaction.
Back to the Question:
Here a chemical reaction is taking olace, where methane is being burnt in the presence of oxygen to form the products Carbon dioxide, water and energy.
Methane + Oxygen ➝ Carbon dioxide + water + energy.So, the arrow head is towards the CO2, H2O and energy, so they are products according to the above explanation.
Correct option is:
[tex] \large{ \boxed{ \bf{ \purple{Option \: C}}}}[/tex]
And we are done !!
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Explain what is meant by a compound. Give an example. How do compounds form?
Answer:
the two or more things that combined together is called compound.
Explanation:
example:
when the element NA and CL combine together form compound NACL.
Why is technology not the solution to all scientific problems?
Answer:
Science can not solve all of our problems. While scientific understanding can help battle things like disease, hunger, and poverty when applied properly, it does not do so completely and automatically. Furthermore, there are many areas of life where science can have little impact.
the search for crude oil is known as
Answer: answer below.
Explanation: Research for crude oil is also known as Petroleum.
7. Mrs. Everhart developed the theory that all bulldogs are great pets. After all her bulldog Meatball is a
wonderful dog! Is this statement a scientific theory? Why or why not.
finoccientific method
Answer:
No it is not a scientific theory.
Explanation:
An explanation of any aspect of the natural phenomenon of the world that can be tested several times and well supported by the evidence, and follows the scientific method. Furthermore known as scientific theory.
Presently, a logical hypothesis must meet a few rules, and one of those is that it must be upheld by a few (and free) strands of proof.
For this situation, we have just one hypothesis, that bulldogs are great pet and Meatball is great among bulldogs, and it isn't sufficient, at that point it can not be a scientific theory.