Which of the following best describes conditions that scientists hypothesize to have existed on early Earth?

Extremely cold temperature
Lack of water vapor in the atmosphere
Presence of self-replicating molecules
Very low levels of free oxygen

Answers

Answer 1

Answer:

presence of self replicating molecules


Related Questions

George buys a car from his neighbor. He gives the neighbor $2,000 when they make the agreement and then pays her $300 a month until the car is paid for. What is the $2,000 he pays called?

a.the monthly payment
b.the down payment
c.the total amount of the loan
d.the amount of the deductible

Answers

Answer:

b. the down payment

Explanation:

the down payment

Answer b
Explanation the down payment

Through which of these will light waves travel with the greatest speed? PLZEXPLAIN Y THE ANSWER IS CORRECT

a. Air
b. Glass
c. Vacuum
d. Water

Answers

Answer: The correct answer is C. Vacuum.

Explanation: It was correct on my test : )

23 In any environment or ecosystem, organisms can have several different types of relationships. Three types of relationships are described below. Ecological Relationships Relationship Description Barnacles (small crustaceans) adhere to the skin of a whale in order to be deposited in a new location that is abundant in resources. The whale does not appear to be affected. Fleas attach to the skin of warm-blooded animals, feed on their blood, and make the animals itch. Fungal mycorrhizae live on plant roots and increase the plant's ability to absorb nutrients. The mycorrhizae are provided with carbohydrates from the plant Y Y Z Which of these correctly describes the relationships between the organisms? A X: mutualism Y: parasitism Z: commensalism C X: parasitism Y: commerisallsm Z: mutualism B X, commensalism Y: mutualism Z: parasitism D X: commensalism Y; parasitism Z: mutualism​

Answers

Answer:

The correct answer is X: commensalism Y: parasitism Z: mutualism

Explanation:

Took a test with the same question

The ecosystem organisms have several different types of relationships. The ecological relationships affect the organism interaction as X: commensalism Y: parasitism Z: mutualism. Thus option D is correct.

What is an ecological relationship?

An ecological relationship is an overlapping relationship that an organism has with the environment and is characterized by five types as

competition, predation, commensalism, mutualism, and parasitism.

The ecological system all organisms are dependent on each other for food and growth. Thus the fleas attached to the skin of the warm-blooded animals are a sign of parasitism and fungus increases the plant's growth is a sign of mutualism.

Find out more information about Ecological Relationships.

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Explain what happens to heat during the Greenhouse effect. Why does this happen?
What are the consequences? ​

Answers

Answer:

The greenhouse effect is a natural phenomenon that causes the surface of the Earth to steam. When sunlight strikes the Earth's atmosphere, part of it is reflected back to space, while the remainder is absorbed and re-radiated by greenhouse gases.

Explanation:

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Plants produce oxygen which animals use. Animals produce carbon dioxide which plants use. Predict the most likely outcome if airborne pollution blocked the sun’s rays so significantly that the percentage of living plants was decreased by 95%.

A. Plants would quickly evolve to consume a mixture of oxygen and carbon dioxide

B. Animals would quickly evolve to begin using carbon dioxide

C. The atmosphere would fill with carbon dioxide, and animals would begin to die.

D. The atmosphere would fill with oxygen, and animals would begin to die.

Answers

Answer: is B both the plant produce oxygen which animals other ,

A group of atoms bonded together is a molecule.

A. True
B. False

Answers

Answer:

A. True

Explanation:

A group of two or more atoms that are chemically bonded together is known as Molecule

-TheUnknownScientist

In class, a student creates an image showing part of the process of protein synthesis.
What occurs in the cell to create the strand of mRNA needed before translation can occur?

Answers

Answer:

Yo the answer is A

Explanation:

spongebob is known for his big round eyes (R), which is dominant over an oval eye shape (r). if he is heterozygous for his round eye shape and marries a woman with oval eye shape, what type of eyes might the kids have?

Answers

Answer:

round cause its dominant

Explanation:

Which oh these colors has the longest wavelength?

A. Orange
B. Blue
C. Yellow
D. Green


If you see this please tell me the answer as soon as possible

Answers

Answer:

A. Orange

Explanation:

"The visible colors from shortest to longest wavelength are: violet, blue, green, yellow, orange, and red."

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What part of Henry's cochlea may have functional hair cells?

Answers

The inner role is the actual receptor that consist of up to 95% fibers of the auditory nerve. These cells are found in an organ of Corti in the inner region of the ear. The hair cells are responsible for the responsive mechanism of the ear. They respond to various sounds, that is, mechanical stimulation.

The organ of Corti of Henry's cochlea may have functional hair cells, it is the structure that makes the hearing organs.

What is cochlea?

Sound waves enter the ear from the outside environment and pass through the external auditory canal before they hit the eardrum and cause it to vibrate.

The incus collects sound vibrations from the malleus, also known as the "hammer," which connects to the eardrum, and sends them on to the stapes.

The stapes are a network that moves the oval window in and out. This motion is collected by the cochlea, a fluid-filled snail-like structure that houses the organ of Corti, the hearing organ, and small hair cells that make up the lining of the cochlea.

Therefore, the organ of the Corti part of Henry's cochlea may have functional hair cells.

Learn more about cochlea, here:

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Humans & other animals regulate cell growth & cell division. In humans, which of these types of cells generally do not divide after they have developed?

a. skin cells

b. cells of the lining of the digestive tract

c. cells in the bone marrow that generate blood cells

d. muscle cells & nerve cells.

Answers

Answer:

d.

Explanation:

muscle cells & nerve cells do NOT divide anymore after they are fully developed

why it is important to know the speed of earthquake waves, the strength of the waves and how do we determine the location of the epicenter of an earthquake. ?

Answers

Answer: As the P and S waves travel out from an earthquake the P waves get progressively farther ahead of the S waves. Therefore, the farther a seismic recording station is from the earthquake epicenter the greater will be the difference in time of arrival between the P and S wave.

Tac----Gaa---ccg----gac-----atc / TAC---GAA---CCC---GGA---CAT what type of mutation is this

Answers

I have no idea man


That’s weird

Answer:

yes

Explanation:

Since they are prokaryote cells, they do not have
or ______
a _____

Answers

Answer:

They don't have nucleus or they have distinct nucleus

Answer:

1.) membrane-bound organelles

2.) a nucleus

Explanation:


8. For the food chain shown below, which of the following changes would 2 points
have the most severe consequences? Grasses - Crickets → Field Mice →
Hawks
A minor decrease in rainfall
The field mice population slightly increasing
The introduction of a second predator that eats field mice
0 A parasitic infestation that reduces the cricket population

Answers

Answer:

I think it is A Parasitic one

Explanation:

A decrease in rainfall may lead to drought, thereby altering the basis (first level) of the food web.

A food web is a diagram that represents the relationships between different groups of organisms in an ecosystem.

Producers (e.g., plants) are organisms that maintain the entry of matter and energy to the food web.

Rainfall is fundamental for maintaining the life of land producers (in this case, grasses) in the food web.

In conclusion, a decrease in rainfall may lead to drought, thereby altering the basis (first level) of the food web.

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Which 2 disorders are the most similar? Hemophilia, Beta Thalassemia, Sickle Cell Disease. Explain.

Answers

Answer:

Sickle Cell and Thalassemia are similar because they are both genetic disorders  and are both caused by errors in the genes for hemoglobin, a substance composed of a protein

Explanation:

guyss plz help me i will give yall extra pointss

Answers

Answer:

The water is transported to the top most leaves (and rest of its parts) of a tall tree by three actions:

1) root pressure (osmosis)

2) capillary action (adhesion)

3) evapotranspiration (cohesion)

Explanation:

The trees contain a series of interconnected tissues (xylem and phloem) that act as network for transport of water and nutrients throughout the tree. The root pressure and capillary action push the water, while the transpiration from the leaves pull the water. The root pressure is generated by osmotic movement of water from soil to the root tissues. The capillary action is caused due to adhesion of water molecules. However, root pressure and capillarity is thought to support only few meters of water column. The rest of the water transport (esp. in tall trees) is attributed to negative pressure generated by evaporation of water from leaves. This negative pressure creates a vacuum and pulls the water from the roots.

Hope this helps.

El compuesto SeO y HgO es: * óxido ácido y óxido básico óxido ácido y óxido ácido óxido básico y óxido básico óxido básico y óxido ácido

Answers

Answer:

óxido ácido y óxido básico

Explanation:

Los óxidos son compuestos químicos formados por la combinación de un elemento químico con el oxígeno (O). Si el elemento que se combina es un metal, el óxido formado se denomina óxido básico. Por el contrario, si el elemento que se combina es un no metal, el óxido resultante es un óxido ácido.

Se (Selenio) es un elemento no metálico, por lo que su óxido (SeO) es un óxido ácido.

Hg (Mercurio) es un elemento metálico, por lo que su óxido (HgO) es un óxido básico.

4

Select the correct answer.

Jonathan is starting to grow facial hair, his voice is deepening, and he's showing other signs of puberty. Which stage of development is he likely

in?

OA.

middle childhood

OB. late childhood

Ос.

adolescence

OD. young adult

Answers

Answer:

Adolescence

Explanation:

(of a young person) in the process of developing from a child into an adult.

Answer:

adolecents are teenagers and teenagers get puberty

Explanation:

Which of the following answer choices would be a sex chromosome aneuploidy in a human?
Choose 1 answer:

(Choice A)
A
A male gamete has only one Y-chromosome.

(Choice B)
B
A female gamete contains one X chromosome.

(Choice C)
C
A sperm has one X chromosome.

(Choice D)
D
An egg contains two X chromosomes.

Answers

Answer:

c I think it is but it's up you, it could also be D

Answer:

It's D

Explanation:

How do the trachea, bronchi, bronchioles, and alveoli work together to process the oxygen that you inhale?

Answers

Answer:

The bronchial tubes divide into smaller air passages called bronchi, and then into bronchioles. The bronchioles end in tiny air sacs called alveoli, where oxygen is transferred from the inhaled air to the blood. After absorbing oxygen, the blood leaves the lungs and is carried to the heart.

Explanation:

from the moment a message is sent to astronauts on the moon it take at least 3 seconds to reply because
Plz help

Answers

Answer:

its D) it takes time for electromagnetic radio waves to get to the moon because of its large distance from earth.

Explanation:

Use the model of meiosis that you made earlier in the lesson to explain how crossing over contributes to genetic diversity. How did you modify your model? How do you think crossing over affects the expression of certain traits compared to the cells where crossing over didn't occur?

Answers

Hello. You have not shown the model of meiosis to which the question refers, which makes it impossible for this question to be answered accurately. However, I will try to help you in the best possible way.

Crossing over is a genetic phenomenon that occurs when two sister chromatids are broken at some points and the pieces are exchanged between them. these exchanges cause the appearance of completely new gene sequences, which can completely affect the expression of stretches in the cells where the crossing over happened, since this cell will have a different gene sequence than the others.

As you may already know, chromosomes are formed by two filaments, called a chromatid. These filaments are united by the centromeros and the union of two filaments and a centromero is called sister chromatides.

16. Which of the following actions lead to long-
shore drift?
A.wave action wearing away layers of soft
rock
B. the collapse of the base of a sea stack
C. the formation of a barrier island
D. sediments are carried by a current along
the beach

Answers

Answer:

A

Explanation:

Mosses have small, root-like structures that allow them to grow on rocks and tree branches. How does this adaptation help the mosses to survive?

A. It allows the mosses to get the moisture and nutrients they need.
B. It allows the mosses to make their own food by capturing more sunlight.
C. It helps the mosses grow bigger stems and leaves.
D. It helps the mosses reproduce faster.

Answers

Answer:

I am just guessing but I think its A

Explanation:

because moss needs the nutrients to survive

Mosses have small, root-like structures that allow them to grow on rocks which allows them to get the moisture and nutrients they need.

What is Nutrient?

This is a substance which is instrumental in the growth, survival and reproduction of organisms.

Moss is a type of plant with small, root-like structures which enables it grow anywhere so as to allow exposure to moisture and nutrients they need.

Read more about Moss here https://brainly.com/question/4413413

Compare and contrast the location and function of ribosomes in prokaryotic and eukaryotic cells.

Answers

Answer:

Explanation:

In eukaryotic cells, ribosomes are found in the cytosol of a cell, the mRNA , endoplasmic reticulum and also the matrix of the mitochondria. They are large molecules that catalyzes the synthesis of proteins, which is called translation. The ribosome choose tRNA and covalently links the amino acids into a polypeptide chain.

In prokaryotes, it can be found in cystosol and it help translate genetic code into protein.

An unidentified element melt at -7-2 c and boils at 58C. What is its physical state at room temperature

Answers

Do it is big buns vs big buns equals 23

***8 Points*** Two copies of a ______ allele are needed to produce a trait.

Answers

The Answer is Gene
Hope this helped!!

A carrier mother (XHXh) of hemophilia marries a normal father(XHY). *Use allele letter H What are the mothers and fathers genotype?

Answers

Answer: The mother of the man can be either XHXH or XHXh and pass her normal allele to the son and his father can be either XHY or XhY, he only passes his Y chromosome. The mother of the woman can be XHXH or XHXh and the father could be XhY, then she could have inherited the normal allele from the mother and the affected allele from the father. But also, the mother of the woman could be XHXh or XhXh and the father could be XHY, so in this case she could have inherited the normal alele from the father and the affected allele from the mother.

Explanation:

Hemophilia is an inherited bleeding disorder in which the blood does not clot properly. This can cause bleeding either spontaneously or after an injury.

It is related to the X chromosome and it is recessive for females, this mean they need both affected alleles to develop the trait. Males only need one recessive allele because they only have one X chromosome. This means that females need both parents to be at least carriers (although one or both can also have the disease or both recessive alleles). While males inherit it only from the mother, either she is a carrier (one recessive allele) or she has the disease (both recessive alleles). Then the mother passes the X chromosome with the affected allele to the son, and that son only receives the Y chromosome from the father, which does not have the gene that determines this disease.

If the mother is a carrier, her genotype is XHXh, being XH the normal allele and Xh the affected allele. She does not have hemophilia because she has a dominant allele. The father is XHY, so he does not have the disease because his only allele is normal (dominant)

The mother of the man can be either XHXH (she can only pass a normal allele) or XHXh and pass her normal allele to the son (in this case, the recessive allele is not inherited by chance.) His father can be either XHY or XhY, he only passes his Y chromosome which is not related to the disease. The mother of the woman can be XHXH or XHXh and the father could be XhY, then she could have inherited the normal allele from the mother and the affected allele from the father. But also, the mother of the woman could be XHXh or XhXh and the father could be XHY, so in this case she could have inherited the normal alele from the father and the affected allele from the mother.

Why the continents could NOT possibly move the way Wegener is describing?

Answers

Answer:

The continents do not drift over the surface they are enabled in the plates and move with them

Explanation:

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