17. When table salt (NaCl) is produced, which of the following best describes the actions of
the sodium (Na) and chlorine (CI) atoms?
A. Sodium atoms replace chlorine atoms.
B. Sodium and chlorine atoms mix together.
C. Sodium atoms dissolve in chlorine atoms.
D. Sodium and chlorine atoms bond chemically.
Answer:
DExplanation:
this is because according to me Na is a mental and Cl is non metal so when and
Answer:D
Explanation:
Which statement best describes the explanatory powers of hypotheses and theories? A hypothesis does not provide an explanation but instead only predicts what may happen. A theory does not provide an explanation but instead only predicts what may happen. The explanation given by a theory is well tested and supported by many observations and hypotheses. The explanation given by a hypothesis is well tested and supported by many observations and theories.
Answer:
. The explanation given by a theory is well tested and supported by many observations and hypotheses.
Explanation:
A theory is a scientific explanation for a given phenomenon. The explanation provided by a theory are usually derived from a well tested hypothesis and experiment.
A hypothesis is a scientific guess of phenomenon. It is upon the hypothesis that most experiments are predicated.
Before a theory is developed from a hypotheses, it must be well tested and proven to be true.
For the people that are too lazy to read the first option, the answer is c.
(hope this helps, and please mark the other person brainliest ^^)
Please help me in biology. (Worth 50 points)
Answer:
??????
Explanation:
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What happened if diaphragm is damaged?
Some solutes move freely across cell membranes, while other solutes require
assistance from special gates. Passive transport and active transport are methods of
moving solutes across cell membranes.
Which of the following accurately describes the difference between passive transport
and active transport?
A Passive transport can move molecules both in and out of a cell, but active transport
cannot.
B Passive transport works against a concentration gradient, but active transport does
not.
C Passive transport does not require energy, but active transport does.
D Passive transport requires carrier proteins, but active transport does not.
Answer: C Passive transport does not require energy, but active transport does
PLS HELP I DONT UNDERSTAND :( WILL GIVE BRAINLIEST + 25 POINTS!!! :D
Answer:
I think its the last one
PLZ HELP I HAVE NO IDEA
2. Suppose the object Marcie found is a rock formed by volcanic processes. What type of rock would it be? A. igneous B. metamorphic C. mineral D. sedimentary
Answer:
The answer would be A. igneous
Explanation:
Explain how switching off water supply would affect the industries that depend on water
Explanation:
Access to a fresh water supply is affected by the following factors.
Climate. Low levels of rainfall and high temperatures lead to water deficits . ...
Geology. Rainfall flows down to the rocks beneath the ground. ...
Pollution. ...
Over-abstraction. ...
Limited infrastructures. ...
Poverty. ...
Politics. ...
Impacts on water insecurity.
In order to carry out the functions of life, organism must
Answer:
Take in energy
Explanation:
Energy is need by all organism to carry out all functions of life. Energy is defined as the ability to do work.
Every organisms main goal is to find energy which they can use for all of their living processes.
For producers such as plants, they use inorganic substances from the environment to manufacture their own food. Consumers such as animals rely on the organic matter of plants and even other animals to manufacture their food for energy production. Decomposers feed on dead organisms in order to source for energy.What is the cellular mechanism of tuberculosis? (Explain)
Question 12 (Mandatory) (3 points)
This organelle stores and protects most of the cell's DNA.
A. Golgi body
B. cell wall
C. nucleus
D. cytoplasm
What best defines an extensive property of a substance?
Answer:
measurable and observable
Explanation:
All of the following are examples of regulating services except
Does soccer ball not moving has energy?
Answer:
No, it still has energy. The energy is just being conserved.
____crust is the thick part of the the Earth's crust, not located under the ocean
Answer:
Continental or oceanic crust
Explanation:
If ur saying the thickest it would be oceanic
Match the word with the definition!
Help please
Answer:
Cloud of ash rock and gas that speeds down a volcano
Lahar- A flood of water, ash, and rock
Cinder Cone Volcano- Composed of cinders, shaped like a cone
Shield volcano- A flat and broad volcano with mild eruptions
Composite Volcano- A tall volcano with explosive eruptions
Explanation:
Connection Stand
Submit Test
Q-Science-Gr7-SQSA1-CBT (2020-21) Question: 1-9
Evidence suggests that Earth is about 4.6 billion years old, even though no Earth rocks have been found that can be dated at more than 4 bilion years old. This discrepancy is most likely caused by Earth's
original crust being
Difficult to date so precisely
Subject to extensive erosion
Blasted away during Earth's formation
Destroyed by solar radiation
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Answer:
Subject to extensive erosion should be correct.
what do u think a planet would need to support life? HELP ITS DUE TODAY
Answer:
it requires that the planet to have liquid water.to detect this water from space it must be on the planet's surface
Please Help :) - A news magazine article reports that "because plant feedstock used to produce biofuels absorbs carbon dioxide from the atmosphere, biofuels are oftentimes carbon neutral."
What assumption underlies this claim?
A. that biofuels are renewable energy sources
B.that the combustion of biofuels does not emit any carbon dioxide
C.that biofuels are a more sustainable energy source than solar or wind
B. that lands cleared for biofuel crops did not store more carbon in their natural states
what's the answer to this?
Answer:
Explanation:Its going to end with a decimal
What moon phase is seen from Earth when the moon is
nearest the sun?
Answers are above
How can apoptosis be defined?
Cell death
Cell growth
O Complete mitosis
O Incomplete mitosis
Answer:
It would be cell death.
{20 points} (brainliest) please help <33
Maria's body temperature is 98.3 °F on average, but varies from 98.0 to 98.6 °F throughout the day. What are 98.3 °F and 98.0–98.6 °F, respectively, for Maria's body temperature?
A. Negative feedback and positive feedback
B. Positive feedback and negative feedback
C. Normal range and set point
D. Set point and normal range
The temperature of 98.3°F of Maria's body is called as a set point, while the temperature of 98.0-98.6°F is called as normal range.
What do you mean by Temperature?The temperature may be defined as the measure of hotness or coldness expressed in terms of any of several scales, including Fahrenheit and Celsius.
The normal temperature of humans ranges from 98 - 99°F approximately. At this temperature, all the enzymes in the body of human functions properly and effectively. Above this temperature, one shall be considered under a fever state.
Therefore, the temperature of 98.3°F of Maria's body is called as a set point, while the temperature of 98.0-98.6°F is called as normal range.
To learn more about Temperature, refer to the link;
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The process in which traits are passed from parents to offspring is
Answer:
genes/DNA
Explanation:
wrist drop results in an inability to extend the hand at the wrist. which nerve would most likely be affected in this injury
Answer:
The answer to that ir the radial nerve
Explanation:
The distal part of the arm is where the radial nerve is most vulnerable to damage. Entrapment neuropathy might result from it being crushed between the overlaying bone fragments.
What nerve most likely be affected in this injury?Weakness, numbness, and pain are common symptoms of peripheral neuropathy, which develops when the peripheral nerves, which are located outside the brain and spinal cord, are damaged.
These symptoms typically impact the hands and feet. Additionally, it may have an impact on many bodily processes like digestion, urine, and circulation.
Pain, numbness, and/or paresthesia, particularly in the middle finger, index finger, thumb, back of the hand, and/or arm, are signs of radial nerve injury.
Therefore, There may also be finger and wrist drop. The location and kind of the injury will determine the exact symptoms.
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Convection currents, resulting from uneven heating of the Earth's surface, cause _______ to form.
A. volcanoes
B. wind
C. fossils
D. mountains
Answer:
the answers wind
Explanation:
Plss help Due today! 40 points and brainliest to best answer!! Help Plzzz!
1) Identify the trait that you believe to be dominant for each of the features surveyed. Explain your reasoning.
2) What recessive features do you exhibit? Do you have any relatives who exhibit those same features?
3) In the family you surveyed, what features did the offspring share with one or both parents? Were there any features that the offspring exhibited that were not exhibited by either parent?
4) How is it possible for an offspring to exhibit a recessive trait if neither parent exhibited that recessive trait? What must be true about the parents’ genes for this to occur?
5) Are there any results in your data that surprised you?
6) It is possible that a recessive trait in a survey such as this one may have a greater total number than its dominant counterpart. Explain how that might happen in an investigation like this.
7) How might surveying a different number of people or different population of people possibly change the percentages that you calculated?
Use the info in the fallowing images to answer these questions plss.
The proposed traits exhibit mostly complete dominance and one of them incomplete dominance. Free earlobe, hair on the knuckle, widow's peak, curly hair and cleft on the chin are the dominant traits.
---------------------------
1)
Features:
Earlobe (Free or attached) ⇒ controlled by a single diallelic gene expressing complete dominance
Free is dominant // Attached is recessive
Hair on the knuckle (yes or no) ⇒ controlled by a five-allelic single gene.
Presence of hair is dominant // Absence of hair is recessive
Hairline ( Widow's peak or straight) ⇒ Coded by a single diallelic gene.
Widow's peak is dominant // Straight line is recessive
Hair texture (Straight or curly) ⇒ Coded by a single diallelic gene, expressing incomplete dominance.
Curly is dominant // Straight is recessive // Wavy hair is the intermediate phenotype
Chin shape (Cleft or no cleft) ⇒ Coded by a single diallelic gene
The cleft is dominant // No cleft is recessive
2)
Recessive traits :
Absence of hair in the knuckleNo cleft in the chin
Mother, sister, and brother with no hair on the knuckle.
Mother, father, sister, and brother with no cleft in the chin
3)
Surveyed family composed of mother, father, two sisters and a boy.
Earlobe (Free or attached)Mother and father with free earlobe
Their three children have free earlobes
The offspring share the trait with both parents.
Hair on knuckle
Father with hair and mother with no hair on the knuckle
Their three children do not have hair on their knuckles
The offspring share the trait with the mother but not with the father.
Hairline
Mother and father exhibiting the widow's peak
The three children have widow's peak
The offspring share the trait with both parents.
Hair texture (Straight or curly)
Mother and father have curly hair
Two daughters have curly hair
Son has wavy hair
The sisters share the trait with both parents, but the boy does not.
Chin shape (Cleft or no cleft)
Mother and father with no cleft on the chin
Children with no cleft on the chin
The offspring share the trait with both parents.
4)
If a recessive trait appears only in one of the children but no parent expresses it, it means that the mother and the father must be heter0zyg0us and that the gene coding for the trait expresses complete dominance.
Let us picture the cross:
Parentals) Pp x Pp
Gametes) P p P p
Punnett square) P p
P PP Pp
p Pp pp
F1) 3/4 of the progeny will express the dominant trait (PP + Pp)
1/4 of the progeny will express the recessive trait (pp)
So even when both parents are expressing the dominant trait, their children can express the recessive trait.
5)
Yes. Most of the traits are coded by diallelic single genes expressing complete dominance. But hair texture shows incomplete dominance, with a third phenotype different from the ones expressed by h0m0zyg0us individuals.
Also, hair on the knuckles exhibits graduation of the phenotype. Individuals that express the dominant trait and have hair on knuckles may have short thin hair, thick long hair, and many intermedia phenotypes. This is because the gene coding for this trait is 5-allelic.
6)
Yes, it is possible. Two reasons can explain this,
1- Because in the population the frequency of the recessive genotype is higher than the frequency of the h0m0zyg0us dominant and heter0zyg0us genotypes.
This could be because the recessive genotype improves the fitness of individuals, so its frequency is increasing in the population.
Or because of Mating systems ⇒ Endogamia or mating with individuals exhibiting similar genotype/phenotype.
2- By random chances. Sampled individuals could exhibit recessive traits by chance.
7)
Sampling a higher or lower number of individuals in the population will affect the results.
Sampling a small number of individuals can not reflect what is actually happening in the population. There are high chances of sampling individuals of the same genotype and phenotype.
Sampling many individuals will provide more reliable information about the population under study. There are high chances of getting individuals to express all possible genotypes and phenotypes.
Sampling individuals from another population might include genes that were not present in the first population. It might increase diversity and heterogeneity.
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What is the difference between material resources and energy resources??
How has ocean exploration increased human understanding of aquatic ecosystems?
Answer: As humans have explored the oceans through time, they have been able to view aquatic organisms in their native habitats. They have been able to witness the interactions of aquatic organisms and learn more about the abiotic factors that govern these ecosystems as well.
Explanation:
Ocean exploration has increased human understanding of aquatic ecosystems through the observation of the interaction of aquatic organisms and their environment.
What is ocean exploration?Ocean exploration is a part of oceanography describing the exploration of ocean surfaces.
The ocean exploration has given humans the opportunity to study aquatic organisms in their natural habitants. These scientist study the interaction of the these aquatic organism with their environment (ecosystem).
Thus, ocean exploration has increased human understanding of aquatic ecosystems through the observation of the interaction of aquatic organisms and their environment.
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