Describe changes in Earth's atmosphere and oceans
Over time.

Answers

Answer 1
I don’t know the exact dates of the timeline of when these events happened but some events which happened overtime which altered the Earth’s atmosphere and oceans include:

- Water vapour in the atmosphere condensed as the Earth cooled to form oceans
- Carbon dioxide levels in the early atmosphere began to decrease after organisms such as algae evolved to carry out photosynthesis, causing an increase in oxygen in the atmosphere overtime, allowing animals to live
- Nitrogen was released by volcanoes, as it is unreactive it gradually built up in the atmosphere
- Carbon dioxide dissolved in the oceans as the oceans began to form, further decreasing the amount of CO2 in the atmosphere

Related Questions

What happens to nutrient macromolecules in an animal's digestive tract?
A) The digestive breakdown of macromolecules determines the monomers that are
immediately needed and therefore produced.
B) Proteins and nucleic acids are digested into monomers before absorption; energy-storage
macromolecules (starch and fat) are absorbed whole.
C) They are absorbed whole and are then broken down into monomers within cells that
ultimately use them.
D) Nutrient macromolecules are digested into monomers before absorptio
3.33 Points

Answers

Answer:

D

Explanation:

Nutrient macromolecules are digested into monomers before absorption. a tube-shaped compartment for the transport, digestion, and absorption of food.

Different finch species have beaks of different shapes and sizes. What is the source of these different phenotypes

Answers

The source is the allele for beak size being different, or more specifically the DNA sequences being different.


please help with 13

Answers

Answer:

where is the video ? please show


How does meiosis most benefit a species?
It decreases the number of chromosomes.
It increases genetic variation.
It increases the number of chromosomes.
It increases mutations.

Answers

Answer:

It increases genetic variation.

Explanation:

Meiosis does not decrease the number of chromosomes nor increase the number of them, it merely splits them.

While it could increase mutations, this might not necesarily be a good thing.

However, it does increase genetic variation, especially during the process where crossing over occurs. Increased genetic variation is beneficial for the population for many reasons like higher resistance to certain diseases. Increasing genetic variation also makes a species look unique from other members of the species.

PLEASE HELP MEEEEEEEEE
Which option distinguishes the outcome if the Farm Bill were to end subsidies to private growers, but continue to provide food stamp funding?


Wholesale commodities prices would increase and create a devaluing of food stamps.

Food stamp recipients would replace subsidies by spending more money on agriculture.

Farm prices would drop due to a higher supply of unsold goods but no demand change.


Aid would shift and all farmers receiving subsidies would receive food stamps instead

Answers

Answer:

Whole sale commodities price would increase and create a devaluing of food stamps.

Explanation:

If the farm bill were to end then the feature which was to be given to farmers would lost.It will decrease the outcome of commodities to market.Which will raise the price of them.

Explanation:

Which option distinguishes the outcome if the Farm Bill were to end subsidies to private growers, but continue to provide food stamp funding?

. Wholesale commodities prices would increase and create a devaluing of food stamps.

Why are some atmospheric components like Corbin dioxide methane called greenhouse gasses

Answers

Carbon dioxide molecules in the atmosphere absorb long-wavelength infrared energy (heat) from the Earth and then re-radiate it, some of it back downward. This effectively traps heat around the Earth which is called the “greenhouse effect”

PLEASE HELP I LITERALLY BEG!!!!!!
What’s the difference between transformed and untransformed bacteria

Answers

Answer:

DNA is accidentally moved from one bacterium to another by a virus

Explanation:In transformation, a bacterium takes up a piece of DNA floating in its environment. In transduction, DNA is accidentally moved from one bacterium to another by a virus. In conjugation, DNA is transferred between bacteria through a tube between cells.

Are there any differences between what we need as humans and what animals need? If so, what?

Answers

us humans need to learn, get jobs, make money, and etc. While animals only need to survive by hunting and just trying to survive. Like we also need to eat to survive but we don’t be out in the wild hunting and trying to stay alive from other predators.

Answer:

Animal society is mainly based on instincts or reflex behavior, whereas human society is based on reason or rational behavior. There are no rights and duties in animal society. Every animal lives upon his physical powers whereas human society has a wonderful system of law and order.

Animals usually live in the wild where they have to find there own food and hunt for it, where we as humans spend money on our food and it is all at the grocery store. There are more differences but this is one main difference.


Which structure allows
gases and nutrients in
and out of the cell?
A. mitochondria
B. cytoplasm
C. nucleus
D. cell membrane

Answers

cell membrane as it is a semipermeable surface

The cell membrane allows gases and nutrients in and out of the cell.

The correct answer is option D, the cell membrane. The cell membrane, also known as the plasma membrane, is a vital component of all cells. It serves as a selectively permeable barrier that separates the internal environment of the cell from its external surroundings. One of its crucial functions is to regulate the movement of substances in and out of the cell, including gases and nutrients.

The cell membrane is made up of a phospholipid bilayer embedded with various proteins. These proteins play a role in facilitating the transport of molecules across the membrane. There are two main types of transport across the cell membrane:

Passive Transport: This includes processes like diffusion and facilitated diffusion, where substances move from an area of higher concentration to an area of lower concentration. Small gases like oxygen and carbon dioxide can passively diffuse through the lipid bilayer of the membrane.

Active Transport: This involves the use of energy to move substances against their concentration gradient, from an area of lower concentration to an area of higher concentration. Nutrients and other molecules can be actively transported using protein pumps.

In both cases, the cell membrane is responsible for controlling what enters and exits the cell, maintaining an appropriate internal environment for cellular functions. This selective permeability ensures that essential gases like oxygen and nutrients can enter the cell while waste products can exit. Thus, the cell membrane is a crucial structure that enables the exchange of gases and nutrients required for cellular metabolism and survival.

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Which types of cells replicate using meiosis?

Answers

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.

What is a similarity between phases of moon wi2 and wk 4

Answers

The similarity is that in both phases, the moon is only ¼ lit.
The moon has four phases, which happen in a fixed sequence. Each phase lasts one week and takes place as follows:

1st week - New Moon: At this moment, the part of the moon that is illuminated by the sun is not facing the earth. This prevents the moon from being seen.

2nd week - Crescent Moon: Only ¼ of the moon is being lit by the sun and facing the earth. Therefore, we can only visualize a small part of the moon.

3rd week - Full Moon: The face of the moon that is facing the earth is completely illuminated by the sun, which allows this entire face to be visualized.

4th week - Waning moon: Once again, only ¼ of the moon is lit by the sun and facing towards the earth.

The moon does not have its own light, but reflects the light received by the sun, for this reason, we cannot fully visualize the moon.

A significant amount of legislation passed in the 20th century sought to reduce the risk of future economic events like the liquidity crisis
experienced by banks during the Panic of 1907. Which of the following policies would increase the risk of a liquidity crisis?

Answers

The policy which would would increase the risk of a liquidity crisis is Banks

being  required to store a smaller percentage of depositor funds in their

vaults.

Liquidity occurs when there is an increase in demand and decrease in

supply. Banks usually have a large percentage of depositor funds stored in

their vault to prevent these occurrence.

In situations whereby they store a smaller percentage of depositor funds in

their vaults , it will lead to a liquidity crisis as they won't be able to cater for

the immediate needs of the depositors.

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Answer:

Banks are required to store a smaller percentage of depositor funds in their vaults.

True or false, as density of ocean water increases, The speed of the ocean currents decreases

Answers

Answer: Very True

Explanation:

Which one of the following provides natural passive immunity colostrums milk powder water with sugar vaccination​

Answers

Answer:colostrums

Explanation:colostrums contains antibodies, last for a period of time in the body.

What did Alfred Wegener try to prove with fossil evidence?

Answers

Answer:

Earth's continents were once connected in a single supercontinent.

Explanation:

v

What are the four types of physical hazards?
Select the 4 answer options that apply.

Extreme Temperature

Radiation

Vibration

Noise

Pathogens

Corrosive substances

Answers

Answer:

1st 4 are the physcal hazards

Explanation:

a)

b)

c)

d)

The four types of physical hazards are Extreme Temperature, Radiation, Vibration and Noise.  

What are Physical Hazards?

A physical hazard is an agent, factor or circumstance that can cause harm with contact. They can be classified as type of occupational hazard or environmental hazard.  

Physical hazards include ergonomic hazards, radiation, heat and cold stress, vibration hazards, and noise hazards.

Whereas, Corrosive substances comes into chemical hazards and Pathogens can be classified as biological hazards.  

Thus, the Extreme Temperature, Radiation, Vibration and Noise are the best four options as the type of physical hazards.

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Answer this question if you know the answer
Do you believe in the sanctity of life? Why/ why not?

Answers

Answer:

Yes

Explanation:

Part of religion

Yes. Because I am an emotional being with a life that I value. What happens to my perceptual and emotional being upon the end of my life is unknowable. I possess empathy and a subsumed theory of mind. I can project my own emotions and desires onto those of other beings. I therefore assume that all emotional beings value their own life as I do my own. Out of my empathy for others and my desire that others will empathize with me, I can value the lives of other emotional beings on their behalf. Because it is impossible to know with any certainty what of my emotional being will survive end of life, I place a very high. Perhaps the highest value on my life and by extension the lives of others. To me it seems that spiritual belief precepts which undermine the singular uniqueness of this life experience through afterlife or reincarnation mythologies those can only undermine and lessen the value i.e. the sanctity of life.

Traditional antibiotics build immunity by exposing the memory cells of our body to inactive versions of viruses or bacteria.

True
False

Answers

the answer is true because our body uses the inactive virus for an antibiotic

Conventional antibiotics increase immunity by exposing our bodies' memory cells to dormant viruses or bacteria. So, the aforementioned is True.

What are Antibiotics?

A particular class of antimicrobial agent that works against bacteria is an antibiotic. Antibiotic drugs are frequently used for the treatment and control of bacterial infections because they are the most effective type of effective antibacterial for doing so. Bacteria may be killed or have their growth suppressed.

Several types of bacterial infections are treated or prevented with the help of antibiotics. They either eradicate bacteria or stop them from proliferating and spreading.

Viral infections cannot be treated with antibiotics. This covers the typical cold, the flu, the majority of coughs, and sore throats. By introducing our bodies' immunological memory to latent viruses or bacteria, traditional antibiotics boost immunity.

Therefore, the given statement is True.

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The portion of the membrane system in eukaryotic cells that is responsible for the making lipids and breaking down toxic substances in the

Answers

Answer:

The endoplasmic reticulum

Explanation:

Three plants are grown in the same environmental conditions with equal sunlight, water, and space to grow. One plant grew to have a purple flower while the other two grew white flowers. What is the most likely conclusion that can be made for the change in flower color?(1 point)

Genetic factors caused environmental changes that caused the differences in flower color.

Genetic factors caused the differences in flower color.

Environmental factors caused a genetic mutation that caused the differences in flower color.

Environmental conditions caused the differences in flower color.

Answers

Answer:

The second answer choice.

Explanation:

Genetic variation must be the answer as the plants were grown in the same conditions. Therefore, the only source of variability might be genetic variation.

The first choice is not the answer because Genetic factors cannot cause the environment around the plant to change.

The third choice is not the answer because the Environmental factors are the same, and if they were really to cause a mutation, all three plants would mutate.

The fourth is the same reason as the third: if environemnt conditions affected the flower, all three plants would change color since they were all grown in the same environemnt, not just the one we see in the results.

Some significant floricultural species can now produce flowers with attractive and unique bloom hues thanks to recent advancements in genetic alteration techniques. Thus, option B is correct.

What are the genetic factor in developing organism?

Flower color is governed by two primary gene families. Genes that code for the protein machinery needed to create pigment molecules are part of one category.

The second group includes genes that result in the production of regulatory proteins. The location, quantity, and kind of machinery that makes up the pigments are determined by regulatory proteins.

Flowers have genes that determine how they look, just like humans. These plants “give birth” to pigments, which result in a rainbow of hues.

The carotenoid substance that gives tomatoes and carrots their color also gives some flowers their yellow, red, or orange hue.

Therefore, Genetic factors caused the differences in flower color.

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physiology Of Digestion Of Earthworm In Simple Word Of Mouth​

Answers

Answer:

They do not have teeth. A liplike extension over the mouth helps direct food into the mouth, where the muscular pharynx (throat) grabs it, coats it with saliva and pushes it down the esophagus into the crop, where it is stored before moving on to the gizzard.

Explanation:

When an employee remembers the first manager who came and spoke to them on their first day of work, the event is most likely to be stored in the employee's:

Answers

Episodic Memory!

Episodic memory includes personal information on what happened and where.

Hope this helps!

Welcome back from your expedition into the cells! Let's see if you paid attention to the molecules that are involved in the smooth muscle contraction. Which neurotransmitter is released from the parasympathetic ganglion?

Answers

Acetylcholine is referred to the neurotransmitter that is released from the

parasympathetic ganglion.

Acetylcholine is the main neurotransmitter found in the parasympathetic

nervous system. Its effects are either excitatory or inhibitory. It is a chemical

which is released by neurons to aid transmission of signals to other cells of

the body.

It helps in the contraction of the muscles, peristaltic movement of the

stomach, as a vasodilator etc.

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Draw a diagram of Escherichia coli bacteria​

Answers

Explanation:

Is this okay

I hope it helps you

how is biomimicry is used in companies help

Answers

Answer:

Looking to nature for inspiration can help individual designers in multiple ways. Designers are innately curious, and biomimicry provides the opportunity to learn about life's water, energy and material-use strategies. This perspective broadens the design space to bring new solutions to the table.

Explanation:

please mark my answer in brainlist plz

write features of animal cell​

Answers

Answer:

Cell membrane Controls the movement of substances into and out of the cell

Cytoplasm Jelly-like substance, where chemical reactions happen

Nucleus Carries genetic information and controls what happens inside the cell

Mitochondria Where most respiration reactions happen

Answer:

Cell membrane Controls the movement of substances into and out of the cell

Cytoplasm Jelly-like substance, where chemical reactions happen

Nucleus Carries genetic information and controls what happens inside the cell

Mitochondria Where most respiration reactions happen

Explanation:

what is meant by chewing the cub?​

Answers

informalif you chew the cud, you spend a long time thinking or talking about something. Synonyms and related words. To think carefully or a lot about things.

When animals such as cows or sheep chew the cud, they slowly chew their partly-digested food over and over again in their mouth before finally swallowing it.

Why would cladistics classify birds and reptiles in a single class

Answers

Answer:

Vertebrae

Explanation:

both birds and reptiles have a backbone or a vertabrae. therefore they are Vertebrates.

Hope this helped!

In a population of cattle, the average body fat percentage is 10.5%. You select parents with an average body weight percentage of 20.8%. The offspring they produce have an average body weight percentage of 17.6%. Based on these data, what is the narrow-sense heritability of this trait

Answers

Heritability in the narrow sense -h²- refers to the proportion of the phenotypic variability that is influenced by genetic factors. In the exposed example, the narrow-sense heritability of this trait is h² = 0.689 ≅ 0.7

-----------------------------

Before answering the question, let us first review a few concepts.

The selection differential, SD, is calculated by getting the difference between the mean value of the desired trait in the population (X₀) and the mean value of the same trait expressed by parents, (Xs). So,

                                                     SD =  Xs - X₀

Heritability in the narrow sense -h²- is the measure of the genetic component to which additive genetic variance contributes.  

It referes to the proportion of the phenotypic variability that is influenced by genetic factors.

The heritability might be used to determine how the population will respond to the selection done, R.  

                                                        h² = R/SD

The response to selection (R) refers to the metric value gained from the cross between the selected parents. R can be calculated by multiplying the heritability h² with the selection differential, SD.  

                                                          R = h²SD  

R also equals the difference between the new generation phenotypic value (X₁) and the original population phenotypic value (X₀),  

                                                          R = X₁ - X₀

Now that we know these concepts and how to calculate them, we can solve the proposed problem.

Available data:

Population average body fat ⇒ 10.5% ⇒ X₀  Selected parents average body weight ⇒ 20.8% ⇒ XsOffspring average body weight ⇒ 17.6% ⇒ X₁

We ned to get the narrow-sense heritability of this trait, h².

h² = R/SD

R  = X₁ - X₀ = 17.6% - 10.5% = 7.1%SD = Xs - X₀ = 20.8% - 10.5% = 10.3%

     

h² = R/SD =  7.1%  /   10.3% = 0.689 ≅ 0.7

The narrow-sense heritability of this trait is h² = 0.689 ≅ 0.7

-------------------------------------

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Which statement is true about DNA?It contains the sugar ribose
It contains a base with nitrogen.
Its monomers contain twice as many phosphate functional groups as RNA's monomers
It is a single-stranded macromolecule.

Answers

It’s Monomers contain twice as many Phosphate functional groups as RNAS monomers
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