Answer: Subsoil
Explanations: This layer has normally less organic matter than the A horizon, so its colour is mainly derived from iron oxides. Iron oxides and clay minerals accumulate as a result of weathering.:
.
How many protons, neutrons, and electrons are present in an atom of hafnium, Hf, with a mass number of 178?
Answer:
Name Hafnium
Atomic Mass 178.49 atomic mass units
Number of Protons 72
Number of Neutrons 106
Number of Electrons 72
Answer: 72 protons, 178 neutrons, 106 electrons
Explanation:
Warm air always wants to _________________.
a. rise (will give brainiest)
B. fall
c. move left
d. move right
Answer: A(Rise)
Explanation: Air flows from high pressure, to low pressure. for example: there are 2 rooms, one is cold and is warm that of warm room is thinner air rising towards the ceiling when the air from the two rooms gets mixed. now the cold air will be leaving the room close to the floor. At the same time, warm air from the warm room will rise and move into the cold room close to the ceiling
A carbon atom has 6 protons and 6 electrons. Carbon has three naturally occurring isotopes, carbon-12, carbon-13, and carbon-14. Which of these statements is true about carbon and its isotopes? A.All carbon atoms have six neutrons. B.All carbon atoms have six protons and six electrons. C.Atoms of all carbon isotopes have either more than 6 electrons or fewer than 6 electrons.
Answer:
The correct option is B
Explanation:
Isotopes of the same element have the same atomic number (number of protons) but different mass number. Hence, all the three naturally occurring carbon isotopes mentioned in the question have 6 protons each. Since the number of protons in a neutral atom is equal to the number of electrons in the same atom, each of these isotopes also have 6 electrons.
However, to determine the number of neutrons in each atom, the number of protons (atomic number) is subtracted from the mass number.
Hence, the number of neutrons in carbon-12 is 12 - 6 = 6
the number of neutrons in carbon-13 is 13 - 6 = 7
the number of neutrons in carbon-14 is 14 - 6 = 8
From the explanation above, it can be noted that the number of protons and electrons in isotopes of the same element are the same while the number of neutrons in these isotopes are different. Hence, the correct option is B
Answer:
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If there is an increase in mass, what has happened?
Answer:
The greater the mass of an object, the less it will accelerate when a given force is applied. For example, doubling the mass of an object results in only half as much acceleration for the same amount of force. Q: Tony has greater mass than the other two boys he is racing (pictured in the opening image).
Explanation:
Answer:
The greater the mass of an object the more it will accelerate! when a given force is applied the mass of the object will change and thats what causes something called speed! Now you will also increase in energy and it will be hard to slow the object down.
Explanation:
See answer
also can i have brainliest!
ATP and photovoltaic cells are similar because
A. they are both key components of plant cells.
B. they both produce chemical and electrical energy.
C. they are both key components of solar panels.
D. they both use energy from the sun to separate electrons from atoms.
2021 answers
1. they both use energy transport chains
2. ATP
3. stored as chemical energy
4. carbon dioxide + water + light --> sugar + oxygen
5. photosynthesis
100% :) please like if I am correct
Answer:
100% 2022
Explanation:
1. they both use energy transport chains
2. ATP
3. stored as chemical energy
4. carbon dioxide + water + light --> sugar + oxygen
5. photosynthesis
A bacterium, containing one circular DNA chromosome, undergoes four rounds of replication. How many new strands of DNA would result?
Answer:
The correct answer is 32 strands.
Explanation:
In bacterium, DNA replication is bidirectional which means it takes place in both directions. The origin of replication starts the replication, it is a specific sequence of nucleotides. Each strand of circular DNA acts as a parent strand to replicate its complementary new strand, resulting in two new DNA strands, one parent strand, and one new synthesized strand. So after the first round of replication, there are 4 strands formed.
Similarly, during the second round of replication each of the four strands will be synthesized lead to a total of 8 strands in the same manner. So by the same process in 3rd round will lead to 16 new strands and by the fourth round of replication 32 strands will be synthesized.
Thus, the correct answer is 32 strands.
Some examples of nonpolar molecules include fats, oils, and waxes. How do these substances interact with water?
Answer: Fats and oils are nonpolar, so they will remain separate from molecules of a polar solvent such as water. Sodium and chloride ions are attracted to charged regions on molecules of polar solvents such as water.
Explanation: Nonpolar molecules do not dissolve easily in water. They are described as hydrophobic, or water fearing. When put into polar environments, such as water, nonpolar molecules stick together and form a tight membrane, preventing water from surrounding the molecule.
Which organelle is correctly paired with its function?
A) nucleus - provides carbohydrates for fermentation
B) Chloroplast - serves ae the site for photosynthesis
C) centriole - synthesizes digestive enzymes
D) lysosome - packages cellular products
Answer:
B) Chloroplast - serves ae the site for photosynthesis
The function of chloroplast is to synthesis food.
The organelle that is correctly paired with its function is the chloroplast, which serves as the site for photosynthesis and is present in Option B as the chloroplast is the site of food synthesis.
What is the significance of chloroplasts in plants?Chloroplasts are cell organelles that are found in the cells of green plants, algae, and some other photosynthetic organisms and are the site of photosynthesis, which is the process by which plants convert light energy into chemical energy in the form of glucose, and it absorbs light energy, which is then used to convert carbon dioxide and water into glucose through a light reaction and the Calvin cycle, and the animals and plants get their food from it.
Hence, the organelle that is correctly paired with its function is the chloroplast, which serves as the site for photosynthesis and is present in Option B as the chloroplast is the site of food synthesis.
Learn more about the significance of chloroplasts in plants here.
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I have to find two words for an acrostic poem and it’s about atmosphere and I need a word that starts with R and E?
Which of the following correctly matches an organelle and its functions?
Lysosome .... movement
O
Mitochindria..... photosynthesis
Central vacuole .... storage
Nucleus .... cellular respiration
O
Ribosomes ..... manufacturer of lipids
Analyze: What relationship, if any, do you see between a star’s color and its temperature?
What is mitosis?
the part of cell division when the chromatids separate
the time in between when cells divide
the part of cell division when two separate nuclei form
cell division when a parent cell divides into four cells
Answer:
the part of cell division when 2 nuclei form.
Explanation:
Answer:
I had took this quiz and had the same question and options, I also got a 100% on the quiz so trust me. The correct answer would be "the part of cell division when two separate nuclei form"
Explanation:
A good rule is never to use a glass thermometer for checking food temperatures.
False
True
Answer:
True
Explanation:
Don't use a glass thermometer when taking the temperature of food UNLESS it is in a shatterproof casing.
Answer:
true 10000000000 percent
Which of the following properties of water accounts for all of the others?
A. Hydrogen bonding
B. High heat capacity
C. Cohesion
D. Adhesion
E. Density
Answer:
(C) cohesion.
Explanation:
cohesion . hydrogen bonds hold water molecules together
Bacteria reproduce by a process known as
A.)meiosis
B.)competitive fusion
C.)mitosis
D.)binary fission.
Answer:
The answer is D, binary fission
Answer:
D.) binary fission.
Explanation:
The process of reproduction in bacteria is known as binary fission.
Why is it not easy to replace a link in a food chain?
There are not enough animals to replace the previous organism.
The decomposers will not decompose another type of organisms.
There are not enough plants to replace the previous organisms.
There may be limited type of natural predators organisms may have.
Answer: D
Explanation: Everything in the food chain is there for a reason. Removing one thing could ruin the whole ecosystem
What do unbalanced trophic levels mean?
Answer:The trophic level of an organism is the number of steps it is from the start of the chain. A food web starts at trophic level 1 with primary producers such as plants, can move to herbivores at level 2, carnivores at level 3 or higher, and typically finish with apex predators at level 4 or 5.
Explanation:
what group of organisms are responsible for capturing energy within ecosystems ?
a. bacteria
b. consumers
c. producers
(I know its not b it has to be either a or b im confused)
Which are accurate descriptions of comparative anatomy? Select three options.
may or may not include studies of structures with the same function
only involves studies of structures that are on the outer surface of the body
compares the structures of organisms from different species
always supports the concept of a recent common ancestor
includes studies of homologous, vestigial, and analogous structures
Answer:
1, 3, and 5
Hope this helps :]
Answer:
1: may or may not include studies of structures with the same function
3: compares the structures of organisms from different species
5: includes studies of homologous, vestigial, and analogous structures
Explanation:
1, 3, 5,
Science Plz Help!!!!!
Answer:
So, I would believe that the answer is C) A laser beam looks bent when it passes through glass blocks. So we know that refraction means the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.
Explanation:
So we know that refraction means the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.
Hope this helps! <3
Helppppppp meee pleaseeeee
Why can you still see the moon during a lunar eclipse?
Answer:
you can see the moon because since the earth blocks sunlight
Earth's atmosphere bends sunlight and indirectly lights up the Moon's surface
Surface anatomy is the study of
1. shapes and structures on the surface of the body, as they relate to deeper structures.
2. shapes and structures of the internal organs of the body, as they relate to the organ system that they belong to.
3. shapes and structures on the surface of the body, as they relate to parts of the brain.
4. shapes and structures of the internal organs of the body, as they relate to parts of the nervous system.
Answer:
1. shapes and structures on the surface of the body, as they relate to deeper structures.
Explanation:
Surface anatomy describes the study of the external features of the body. It is also sometimes referred to as "visual anatomy" because it involves studying anatomical features that can be visually observed, and doesn't rely on dissection.
Answer:
a. shapes and structures on the surface of the body, as they relate to deeper structures.
Explanation:
4. In what way is a human lung similar to a plant leaf?
Answer:
Both organs are made up of only one type of protective dermal tissue.
Both organs are responsible for the exchange of oxygen and carbon dioxide gases.
Explanation:
Answer:
Explanation:
A plant leaf is an organ. In what way is a human lung similar to a plant leaf? Both organs are made up of only one type of protective dermal tissue. Both organs are responsible for the exchange of oxygen and carbon dioxide gases. When you think about it they both need to breathe. You can say this and expand it more
Do you think partial melting will occur if there is direct contact of hot molten rock in the Earth’s crust?
Answer:
As it moves toward the surface, and especially when it moves from the mantle into the lower crust, the hot magma interacts with the surrounding rock. This typically leads to partial melting of the surrounding rock because most such magmas are hotter than the melting temperature of crustal rock.
A diagram of the DNA strand is provided. The arrow is pointing to which component of the
DNA strand?
Phosphates
Deoxyribose
Nitrogenous bases
Nucleotide
Answer: Nitrogenous Bases
Explanation:
Please help me with this.
Choose one of these career fields:
- astronomer
- geologist
- meteorologist (it can either be this)
- oceanographer (or this)
- List three tasks this type of scientist completes most days.
- List a location where such a scientist may work.
- Identify three reasons why this type of scientist's work is important.
- Identify what course of study is necessary to work in this field of science, as well as how many years of study are necessary to complete a degree in this field.
Answer:
geologist may be
Explanation:
Complex carbohydrates are made up of _
Sugar molecules strung together
Which of the following statements about a scientific theory is NOT true?
Answer:
sorry, but there are no statements. Maybe you can edit it and add the pictures so we can see them.
People with diabetes often receive insulin injections. What effect does insulin have on the body?
It raises blood-sugar levels.
It lowers blood-sugar levels.
It raises glucagon levels.
It lowers glucagon levels.
Answer:
its B lowers blood sugar levels
Explanation:
just got done with the test
Insulin lowers the blood-sugar levels in the body.
What are the functions of insulin?Insulin is a peptide hormone produced by beta cells of the pancreatic islets encoded in humans by the INS gene. It is considered to be the main anabolic hormone of the body.
After you eat, carbohydrates break down into glucose, a sugar that is the body's primary source of energy. Glucose then enters the bloodstream. The pancreas responds by producing insulin, which allows glucose to enter the body's cells to provide energy.
Insulin is a peptide hormone secreted by the β cells of the pancreatic islets of Langerhans and maintains normal blood glucose levels by facilitating cellular glucose uptake, regulating carbohydrate, lipid and protein metabolism.
Learn more about insulin:
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