Answer:
don't known ask the goggle
What are valence electrons?
A. the atomic mass
B. the atomic number
C. all of the electrons in an atom
D. electrons in the outermost energy level
Answer:
D
Explanation:
The simple answer is the electrons in the outermost energy level.
Hydrogen has 1 electron in the outermost energy level.
Magnesium has 2 so this tells you that magnesium has a charge of 2
Oxygen has 6 oxygen has a charge of - 2
Fluorine has 7
For most elements, the electrons in the most outer ring determine the valence of the element.
Notice that the non metals work differently than the metals. Mg may have a charge of 2 and that is the number of electrons in the valence right.
Oxygen is a non metal it has a charge of - 2. It gets 6 electrons by subtracting the number of its charge from 8.
Answer:
D. electrons in the outermost energy level
Explanation:
The valence electrons are the electrons in the outermost energy level.
Which of the following do all living things have in common?
O A. All living things are made up of at least one cell.
O B. All living things breathe oxygen.
O C. All living things are made up of many cells.
ОО
D. All living things eat other living things for energy
Answer:
C
Explanation:
all living things are made of up many cells
Cuanta poblacion tiene Yunga?
Answer:
1570
Explanation:
The division of the nucleus is called
metaphase.
replication.
ОООО
cytokinesis.
mitosis.
Students are studying the length of time that different battery brands can keep flashlights
operating. Which of these should remain constant in this investigation?
A. The length of time
B. The color of the flashlights
C. The type of flashlights
D. The brand of the batteries
Question 12
What could be an explanation if Juanito crosses one white flower with a red flower but all
the offspring are pink flowers?
sex-linked
simple Mendelian inheritance
codominance
recessive epistasis
incomplete dominance
If the xylem in a young tree is damaged, which process is first affected?
A. performing photosynthesis
B. transporting sugar to the roots
C. transporting water to the leaves
D. absorbing water from the soil
Answer:
[tex]transporting \: water \: to \: the \: leaves.[/tex]
Explanation:
Xylem are cells in the root, stem and leaf that transport water and dissolved mineral salts from the soil to the leaf of plants.
Answer:
C. transporting water to the leaves
Explanation:
If the xylem in a young tree is damaged, the process that is first effected is the transporting of water to the leaves. So, option (C) is the correct answer.
The burning of fossil fuels contributes to the addition of greenhouse gasses to the atmosphere. These gases trap thermal energy in the Earth’s atmosphere. Which of the following would be the most reasonable changes that could result from an increase in the burning of fossil fuels? *
a.The air all over the globe would become dirtier.
b.There would be a global rise in temperatures.
c.Ecosystems would become more diverse.
d.Rates of photosynthesis would decrease.
Answer:
There would be a global rise in temperature.
Which of the following statements about the nucleus is NOT true?
A. The nucleus contains DNA proteins that make RNA copies of DNA.
B. The nucleus is the site of protein assembly.
C. The nucleus stores the coding instructions for constructing the cell's proteins.
D. The nucleus is surrounded by a membrane that lets materials in and out.
Answer:
statement A is not true.
A study was conducted to evaluate the relationship between artificial sweeteners and bladder cancer. 3,000 cases and 3,000 controls were enrolled in the study. Among the cases, 1293 had used artificial sweeteners in the past, while 1707 had never used artificial sweeteners. Of the controls, 855 had used sweeteners and 2145 had not.
a. What is the exposure and what is the disease?
Calculate the correct measure and show your work.
How do we interpret this effect estimate?
Answer:
A. exposure - use of artificial sweeteners
disease - bladder cancer
In this research artificial sweeteners are used as the exposure that leads to bladder cancer disease.
B. Bladder cancer No bladder cancer
Artificial sweeteners 1293(a) 855(b)
No artificial sweeteners 1707(c) 2145(d)
Total 3000 3000
Cases -
- Risk factor (Artificial sweeteners) present (1293)
- Risk factor (Artificial sweeteners) absent (1707)
Controls
- Risk factor (Artificial sweeteners) present (855)
- Risk factor (Artificial sweeteners) absent (2145)
Odds ratio or strength of association between exposure and disease
OR= Cases with exposure/cases without exposure= a/c divided by b/d
So, the putting value ad/bc= 1293*2145/855*1707
= 1.9
OR would be 1.9
C. this interprets that there is a 90% increase in the chance of bladder cancer if exposed to artificial sweeteners or people with bladder cancer have a 1.90 times higher odds of using artificial sweeteners compared to controls
Question 13 of 32
Two of the three points of the cell theory are listed below.
• All living things are made of cells.
• All new cells come from preexisting ones.
Which of the following is the third point of the cell theory?
A. Cells are the basic units of life.
B. Cells store genetic material in the nucleus.
C. Cells are spherical.
O
D. Cells are surrounded by a rigid cell wall.
SUBMIT
Answer: the answer is D
Explanation:
Answer:
Answer D
Explanation:
Pick the right options in the dropdown below . Which characteristic of life is represented below?
The atomic number determines an elements identity and shows the number of _________________ in the atom.
A. protons + neutrons
B. nucleons
C. protons
D. neutrons
Answer:
c- protons??? I'm pretty sure
Plz help me I need help
water molecules are polar.
mark me brainliesttt :))
Summarize the functions of the vertebral column
Answer:
function of vertebral columnExplanation:
The major function of a vertebral column is to protext the spinal cord,it also provides stiffening for the body and attachment for the pectoral and pelvic girdle and many muscles. In human an additional function is to transmit body weight in walking and standing.
Respiration is helpful in (1 Point) Removing waste from the body Producing energy within the body Production of proteins Production of carbohydrates
Answer:
Producing energy within the body.
Explanation:
If a person is operating a leaf blower at 110 decibels, and using a pair of noise cancelling headphones that reduces the relative intensity by 100 times, will the sound be in the safe range of human hearing?
Answer:
Yes
Explanation:
what is photosynthesis ?
Answer:
Photosynthes is the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.
What is photosynthesis?
Answer:-The process by which green plants and some other organisms make thier own food by converting sun light and carbon dioxide into energy is called photosynthesis.
A scientist separates a population of lizards into two groups. What would
most likely increase the rate of speciation in this population?
A. Have one group breed twice as often as the other.
B. Keep the two groups apart, but in identical ecosystems.
C. Force the two groups to breed with each other.
D. Have one group live with a much stronger predator.
Answer:
Hi, there your answer is D. Have one group live with a much stronger predator.
Explanation:
Having one group live with a much stronger predator will most likely increase the chances of speciation.
What is speciation?It is a process by which a new species of an organism is created.It occurs due to evolution.It occurs when a portion of population gets separated from the original population and evolves different characters that are heritable.Will speciation occur if :one group breeds twice as often as the other? No, because no selective force is acting on it.both groups are in identical ecosystem? No, since no reason for adapting and evolving a new character will be there.both groups interbreed? No, there is no competition, no struggle for existence and hence no evolution occurs.one group lives with a strong predator? Yes, since they will evolve evasive mechanisms and characters.To learn more about species, evolution, and predator here,
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What gets trapped in the atmosphere by greenhouse gases?
sunlight
thermal energy
water vapor
methane gas
thermal energy gets trapped in atmosphere due to greenhouse gases
When someone says the word "desert," what plant do you picture? You're probably
picturing the saguaro cactus. Saguaros are known for their long, tall branches that look like
arms. These branches don't start to grow until the cactus is 50 to 70 years old. The folds
along the saguaro's stem and branches are called pleats. What are they for? These pleats
store water for the cactus, which is important in the hot, dry desert. A desert plant's spikes
aren't just to keep animals away. They also help provide shade during the long hours they
spend in the sun.
A saguaro cactus will
A
store water in its pleats.
B
shoot spikes at animals.
С
only live up to 70 years.
D
grow branches immediately
Answer:
It's A
Explanation:
HELPPPP, ASAPPP THEY ONLY GAVE ME A FEW MINUTES TO COMPLETE!!
Discuss the benefits and drawbacks of
using solar energy and wind energy.
Answer:
hmm I'd say something like "Solar and Wind energy systems are renewable sources and ultimately are healthier for the planet, the drawback is that other resources (i.e oil and coal) tend to be cheaper"
Answer:
Solar Energy:-Benefits-
Solar power is completely cleanIt produces no air pollution, no water pollution, no greenhouse gas effects and carbon - free alsoNo harmful emissions are released when electricity is being produced by solar panels.It also reduces the need for finite resources.Drawbacks-
Solar Energy Storage Is ExpensiveUses a Lot of SpaceIts Weather-Dependent, slthough solar energy can still be collected during cloudy and rainy days, the efficiency of the solar system drops.Initial cost of purchasing a solar system is fairly high.Wind Energy:-Benefits-
Wind is a domestic source of energyIt's a clean fuel sourceIt's sustainable and causes no harmful emissions. Wind energy is a green energy source and does not cause pollution.Drawbacks-
Wind turbines are prone to noise disturbances.The wind is inconsistentWind turbines involve high upfront capital investment.Installation can take up a significant portion of land.Which is the best way to describe the biodiversity of an area?
Answer:
The best way to describe of biodiversity in a area is a grassland with a wide variety of organisms living on it.
Explanation:
What is DNA (Deoxyribose Nucleic Acid)?
DNA ( Deoxyribose Nucleic Acid ) is a molecule.
and its where a bunch of atoms stuck together.
Choose the sentence that correctly uses pronouns.
Whom stopped to pay attention to the street performer?
Everyone from children to dogs out for walks stopped to listen to she.
Him enjoyed her unusual style and mix of instruments.
The singer herself wrote that beautiful song.
[tex]\sf\purple{D.\:The\: singer\: herself \:wrote \:that\: beautiful\: song.\:✅}[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{!}}}}}[/tex]
Answer:The singer herself wrote that beautiful song.
Explanation:
I got it right when i took the test
which of the following shapes is not a common shape of a prokaryote?
a. bacilli
b. cocci
c. cylinder
d. spirochetes
NO WRONG ANSWERS PLS
Answer:
c
Explanation:
3. Ang
ay isang uri ng kuwentong bayan at panitikan
na nagsasalaysay ng mga pinagmulan ng mga bagay-bagay
sa daigdig
A. Horror
B. Alamat
C. Pantasya
D. Mga tula
Answer:
B. Alamat
Hindi masyadong magaling ang aking Pilipino, ngunit sana makatulong ito :)
replanting trees on a bare hillside is an example of
A) conservation and refforestation
B) preservation and conservation
C) restoration and preservation
D) refforestation and restoration
Answer:
A
Explanation:
firstly, conservation because by planting trees, the land dat was once proned to erosion is covered thereby conserving de land and reforestation because, u hv replaced trees dat were once cut there
A person who forwards on a sexual picture of another can get in as much trouble as a person sending a picture of themselves (sexting).
True
False
The statement about the s exual pictures is TRUE.
The person might get convicted for the crime and can severely punished if he post or share the pictures without consent.It comes under cyber crime.What come under cybercrime?Child P ornography OR Child s exually abusive material (CSAM) Cyber Bullying. Cyber Stalking. Cyber Grooming. Online Job Fraud. Online S extortion. Phishing. VishingTo know more about cyber crimes here
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Why did Gregor Mendel choose to use purebred plants in his experiments?
A They reproduce sexually.
B They exhibit only one form of a trait.
C They have a variety of traits.
D They reproduce asexually.
Answer:
B
Explanation:
Gregor Mendel chooses to use purebred plants in his experiments because they exhibit only one form of a trait. The correct option is B.
What is Mendel's experiment?Mendel altered pure pea plant lineages. First-generation hybrids (F1) displayed dominant qualities like purple flower color while hiding recessive traits like white bloom color.
But in second-generation (F2) pea plants, recessive characteristics returned in a 3:1 ratio (dominant to recessive). Every pea plant has both male and female reproductive organs, and they all typically procreate by self-pollinating.
This was crucial to make sure that there were no other factors influencing the result of the cross when he crossed two plants with different features.
Therefore, the correct option is B, They exhibit only one form of a trait.
To learn more about Mendel's experiment, refer to the link:
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