What are control variables?
Answer:
scientific experimentation is an experimental element which is constant and unchanged throughout the course of the investigation
Explanation:
throughout the course of the investigation.
The control variables themselves are not of primary interest to the experimenter.
All living things are composed of cells. Cells are the basic unit in living things. All cells are produced from other cells.
Answer:
yes that is correct, its part of the cells of life theory
Explanation:
Provides an image that is a three-dimensional representation with little magnification
Answer:
Scanning electron microscope
Explanation:
The scanning electron microscope is a device that allows a viewer to observe very small structures that are invisible to the naked eye. The great difference of this microscope in relation to the others, is that it allows the images to be visualized in three-dimensional structures with little magnification, which allows the full visualization of structures, topographic aspects and compositions of the samples visualized by it, thus allowing them to be scientific studies with more precision and accuracy.
true or false... ecosystems include all the different populations in a specific area.
what is a strong triangular iron strip of plough called
Answer:
Strong triangular iron strip in plough is known as ploughshare.
Match the scientist with the research studies
Chemistry
geology
Astronomy
physics
Definitions
Planetary motion galaxies
Composition of matter
Physical structure of the earth
Natural laws of the the universe
Answer:
Astronomy: Planetary motion galaxies.
Chemistry: Composition of matter.
Geology: Physical structure of the Earth.
Physics: Natural laws of the universe.
Explanation:
I hope it helps!
Questions (25)
1 - Quiz
What body system helps break down food?
Answer:
The digestive system
Explanation:
The digestive system breaks down food
Answer:
digestive also know as homostasis
Explanation:
what happens to an unfertilized ovum?
Answer:
The egg disintegrates and sheds the endometrium
Answer:
If left unfertilized, the egg disintegrates and the uterine lining is shed during your period.
Explanation:
what are 3 characteristics for evaporation
Answer:
The three characteristics for evaporation are heat, atmospheric pressure and air movement. Hopefully this helps.
Explanation:
HELP WILL MARK YOU BRAINLIEST!!!
Answer:
B) Destruction of Habitat
Explanation:
How is skin cell relate to its function
Answer:
Skin serves as a protective barrier, a way to sense the world, and a layer that keeps nutrients and water inside the body.
Explanation:
A scientific___is a statement that summarizes a pattern found in nature.
Answer:
A scientific law.
What determines how much energy a human can receive from food?
o
A. How much the food molecules weigh
B. How much energy the food molecules have
ОО
C. How much nitrogen the food contains
O
D. How much oxygen the food contains
Fungus-like protists feed on decaying leaves. They photosynthesize in the presence of sunlight. They reproduce using spores. They use pseudopods to engulf any foreign material and convert it into food. They are prokaryotic in natur
Answer:
Fungi like protist feed on decaying leaves.
They reproduce by using spores.
They use pseudopods to engulf any foreign material and convert it into food.
Explanation:
Fungi like protist are Majorly molds and they are common seen on decaying organic matter and they normally absorb nutrients while feeding.
They are much similar to fungi and reproduce through spores even as fungi reproduce. They can be found in soils, lawns, trees and they do not have major cell wall divisions.
The use their pseudopods to engulf foreign material and convert it to food which supply them with nutrients.
Examples are slime molds and water molds.
The majior fields that contribute to environmental science
A scientist is studying a cell and can clearly see that it has ribosomes and mitochondria. Which statement best describes how the cell could be classified?Which structure is unique to eukaryotic cells?
Answer:
The cell is eukaryotic because it contains mitochondria.
nucleus
Explanation:
The statement that best describes the way in which the cell would be classified is that the cell is eukaryotic because it contains mitochondria. The correct option is D.
What is eukaryotic cell?A eukaryote would be any cell or life form with a well-defined nucleus. The nucleus of a eukaryotic cell is surrounded by a nuclear membrane, which contains well-defined chromosomes.
The main difference between these two varieties of organisms is that eukaryotic cells have such a membrane-bound nucleus, whereas prokaryotic cells do not. Eukaryotes stockpile their genetic information in the nucleus.
Prokaryotes are organisms that lack a nucleus and various organelles in their cells.
Prokaryotes are classified into two groups namely bacteria and archaea, each of which has its own evolutionary lineage, according to scientists.
Thus, the correct option is D.
For more details regarding eukaryotic cell, visit:
https://brainly.com/question/11351358
#SPJ6
Your question seems incomplete, the missing options of the question are:
The cell is prokaryotic because it contains ribosomes. The cell is prokaryotic because it contains mitochondria. The cell is eukaryotic because it contains ribosomes. The cell is eukaryotic because it contains mitochondria.Which is the most abundant gas in earths atmosphere
Answer:
nitrogen, and oxygen
Explanation:
Answer:
Nitrogen
Explanation:
I took the k12 test.
Both a plant and a fungus are composed of cells. According to the cell theory, the cells of
A a fungus can take in nutrients but are unable to produce new cells.
B
both organisms are able take in nutrients, and both can produce new cells.
C
a plant can produce new cells but are unable to take in nutrients,
D
both organisms are able to take in nutrients, but only plants can produce new cells.
Answer:
A
Explanation:
New cells can only come from already existing cells, therefore neither plants nor fungi can create new cells
According to the cell theory, the cells of both plant and fungal organisms are able take in nutrients, and both can produce new cells. Thus option B is correct.
What are the difference between plant cell and fungal cell ?Plants are autotrophic eukaryotic organism with different parts like root, stem, leaves etc. Fungi are the heterotrophic eukaryotic organism with undifferentiated body.
plant cell have cell wall made up of cellulose while fungal cell wall are septate or aseptate composed up chitin.
Plant cell are uninucleate but fungal cell are both uninucleate or multinucleated.
Chloroplast present in plant cell but absent in fungal cell.
Plant cell membrane have phytosterol where as fungal cell membrane have ergosterol.
Learn more about cell theory, here:
https://brainly.com/question/1468725
#SPJ2
How many independent variables can be tested in a controlled experiment?
(A) five
(B) as many as you want
(C) two
(D) one
The city plans to build a highway extension next to a river. Which of the following should they do to make sure they have scientific knowledge to inform their decision? A. Invite several gas and oil companies to build gas stations along the route B. Request a budget increase to extend the project even more C. Conduct a study of the river levels in different seasons to be sure the highway is out of the flood zone D. Publish the highway plans for people to review
Answer:
c
Explanation:
hope this helps!
Answer:
The answer is c I just took the test
Explanation:
Look at the following, and decide if they are
carbohydrates or not.
Redacta un escrito dónde expliques como está formado(un ecosistema), menciona ejemplos y como sigue una estabilidad por el equilibrio entre los factores físicos y biologícos en el ecosistema
Answer:
Un ecosistema esta formado por facotres abioticos y bioticos.
Los factores bioticos son aquellos que presentan signos vitales, es decir que cumplen con la vida, metabolismo, respiracion, entre otras funciones vivas.
Los factores abietos son aquellos que no tienen vida pero con los que los factores bioticos intercambian energia, un ejemplo de esto son las rocas, los vientos, los sedimentos, la tierra fertil.
Los factores bioticos serian los organismos vivos como los animales, que al funcionar como sistemas abiertos de intercambio de energia constante mantienen un equilibrio fisico biologico con los factores bioticos.
Explanation:
Los ecosistemas cumplen con una cadena que no debe romperse ni faltar ningun eslabon, si esta continuidad se interrumpe con la extincion de una especie como animal o vegetal el ecosistema variará, y cambiara toda su conformacion.
Es un conjunto de factores bioticos y abioticos en armonia que se complementan e intercambian energia entre si de manera ordenada en eslabones, si uno de estos eslabones se rompe, se extingue, o se modifica por intervencion del hombre u otros factores TODO el escosistema se verá modificado o afectado.
Plsss help me fast!!!!!!
Botany Professor. Dr. Noa Nkembe. is conducting research over how temperature effects the toxicity of Toxicodendron diversilobum (poison oak). He grows the plant in controlled environments that are kept at temperatures that vary by just 0.05 degrees Celsius. Which of the thermometers would be the BEST choice for him to use for this experiment? Justify your answer. A.Glass thermometer B.Temperature probe C.Temperature strip
Answer:
The correct answer is - option A. Glass thermometer.
Explanation:
Glass or basal thermometers are the instruments that are use to measure temperature of any surface or organism. These are best choice for the measuring smaller changes in the temperature which can vary up to 1/10th of the degree to 1/100th of the degree.
In this case the temperature variation is 0.05 in the environment of the Toxicodendron diversilobum (poison oak) which can easily be monitor with the help of this glass temperature.
Thus, the correct answer is - option A. Glass thermometer.
The father a star is away from earth, the more it is
Answer- red shifted
The farther a star is from Earth, it will be more red shifted. Hope it helps!
According to the data collected by the Economic Policy Institute, what is the relationship between annual earnings and education attainment?
2
What forms at a divergent plate boundary such as in the middle of the Atlantic Ocean?
a) Tall mountains
b) Deep valleys
c) Sea mounts
d) Under sea ridge
Answer:
The Mid-Atlantic Ridge (MAR) is a mid-ocean ridge, a divergent or constructive plate boundary located along the floor of the Atlantic Ocean, and part of the longest mountain range in the world. In the North Atlantic, it separates the North American from the Eurasian Plate and the African Plate, north and south of the Azores Triple Junction respectively. In the South Atlantic, it separates the African and South American plates. The ridge extends from a junction with the Gakkel Ridge (Mid-Arctic Ridge) northeast of Greenland southward to the Bouvet Triple Junction in the South Atlantic. Although the Mid-Atlantic Ridge is mostly an underwater feature, portions of it have enough elevation to extend above sea level, for example in Iceland. The ridge has an average spreading rate of about 2.5 centimetres (1 in) per year.[1]
Explanation:
Please make branilest and hope I helped!
explain how smoking may reduce the efficiency of the function of alveoulus
Answer:
"Over time, the toxins from inhaled cigarette smoke break the thin walls of alveoli, leaving larger, less efficient air sacs. The sacs also begin to lose their bounce, making it harder to bring in the oxygen and expel carbon dioxide. 3 Both can become partially trapped in the lungs".
The energy in many of those food particles is ultimately transferred into ______. A. Complex carbohydrates B. Glucose C. Proteins D. Lipids
Which is the closest synonym for the word caravan? A Parade B Region C Breed D District
Answer: A
Explanation:
Caravan is just a parade in a different font
I would say the closest synonym in that list would be Parade. But to be honest those are weird choices. A Parade does have something to do with a caravan. You wouldn't have any of those included in a parade except a caravan.