Question 2 of 10
How did oxygen first enter Earth's atmosphere?

Answers

Answer 1

Answer: It wouild be biological proceses


Related Questions

Overall, bottle bills have not been a very successful financial incentive to reduce waste.

True
False

Answers

Answer:

false

Explanation:

Cory recorded the following values when he measured the length of leaves from one tree.

Length in centimeters: 8, 11, 9, 10, 10, 9, 6
In what range of data is the length of the next leaf that Cory measures most likely to fall?
1 to 5 cm
6 to 11 cm
9 to 10 cm
12 to 18 cm

Answers

Answer:

6-11 cm

Explanation:

It can't be anything else, because statistically it has a low probability of being 9 - 10, but it should/has to be in the 6 - 11 range.

which of the following is a result of the Montreal Protocol and it’s implementation?
A. Chlorofluorocarbons are now put only into aerosol cans
B. Fewer aerosol cans are now produced
C. Chlorofluorocarbons are now used as refrigerants
D. The global carbon footprint increased

Answers

A result of the Montreal Protocol and it’s implementation is fewer aerosol cans are now produced.

What is the Montreal Protocol?

The Montreal Protocol is an international agreement in which the countries which a signatories agreed to minimize the use of substances that deplete the ozone layer.

Hence,  a result of the Montreal Protocol and it’s implementation is fewer aerosol cans are now produced.

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Some argue that hydroelectric power should be used to generate more energy
for the United States. Which argument could be used to dispute this idea?
O A. It can only be used in areas with specific kinds of rivers.
O B. It releases more greenhouse gases than most sources.
O C. It uses too many nonrenewable resources.
D. It releases toxic chemicals into the atmosphere.

Answers

The use of hydroelectric power in the United States is limited because it can only be used in areas with specific kinds of rivers.

What is hydroelectric power?

Hydroelectric power is electric power which is generated from water.

The kinetic energy of motion of water is converted to electrical energy when the turbines of a dynamo are turned by the moving water.

Hydroelectric power has limited application because it requires the area to have large water bodies.

Therefore, the use of hydroelectric power in the United States is limited because it can only be used in areas with specific kinds of rivers.

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Select the correct answer.
Which compound is inorganic?
O A C6H1206
O B. KH2PO4
OC. CH3COOH
OD. C2H6
O E. C2H5OH

Answers

Answer:

KH2PO4

Explanation:

Organic compounds generally contain carbon and hydrogen.

Inorganic compounds are formed using other elements in the periodic table.

The right response, KH2PO4, is Option B. Since KH2PO4 is an inorganic substance, it doesn't include carbon. Potassium, hydrogen, phosphorus, and oxygen atoms make up the ionic composition. It is a potassium and dihydrogen phosphate anion salt that is used as a food ingredient and fertiliser.

What are organic substances ?

Contrarily, organic substances are those that have carbon and hydrogen atoms in them. The organic molecules C6H1206, CH3COOH, C2H6O, and C2H5OH are a few examples.

These substances differ from inorganic substances in that they include carbon atoms. As KH2PO4 is an inorganic chemical, Option B is the best choice for the right response. Contrarily, organic chemicals are not inorganic since they include carbon atoms.

There are two types of compounds that are organic and inorganic and these both of the molecules are possessing different types of varieties and with that varies as per the compounds and the qualities and with these different types of compounds are made.

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Anybody ask questions


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(i) What is fertilisation? Distinguish between external fertilisation and internal fertilisation. (ii) What is the site of fertilisation in human beings?​

Answers

♨️ Answer ♨️

i) Fertilisation or fertilization, also known as generative fertilisation, syngamy and impregnation, is the fusion of gametes to give rise to a new individual organism or offspring and initiate its development

What Is Internal Fertilization?

Syngamy of gametes occurs inside the female body after insemination through copulation

Observed in birds, mammals, birds occurring in terrestrial plants and animals, also in some of the aquatic entities. This is observed in three ways – ovoviviparity (eggs retained in the female body, hatched when fully developed, oviparity(egg-laying), viviparity(offsprings develop within the female body)

Observes in plants such as bryophytes, pteridophytes

What Is External Fertilization?

Syngamy of gametes outside the female body/outer environment, notably in water bodies

Observed in few vertebrates, sea urchins, fish, aquatic invertebrates, almost all amphibians

Deposition of sperms and eggs by males and females in open surroundings is known as spawning

Broadcast fertilization – used when sperms swim through the water uniting with eggs to fertilize

ii) In humans, the process of fertilization takes place in the fallopian tube. During this process, semen comprising thousands of sperms are inseminated into the female vagina during coitus. The sperms move towards the uterus and reach the opening of the fallopian tube.

✯ Hope this helps ✯

Explanation:

..♡ Innocent bachi ♡..

Sorry if the answer is wrong !!

Which of the following is NOT a component of the systemic circult?

Answers

Answer:

C

Explanation:

Consider the following data.

Rates for Cheetah Population from 2011 to 2012
Cause of change
2011
2012
Deaths
2
1
Births
5
4
Immigration
6
1
Emigration
8
3

Which would have to happen to keep the population growth of cheetahs in 2013 the same the previous years?
4 deaths, 7 births, 2 immigration, 6 emigration
3 deaths, 6 births, 5 immigration, 7 emigration
5 deaths, 2 births, 8 immigration, 3 emigration
1 deaths, 5 births, 3 immigration, 7 emigration

Answers

B is the correct answer

The one that would happen to keep the population growth of cheetahs in 1 death, 5 births, 3 immigration, and 7 emigrations. The correct option is d.

What is population analysis?

The study of data such as births, deaths, wealth, or illness incidence that show the changing structure of human populations and the composition of a specific human population.

The components evaluated in a person's or a population's ecological footprint are food consumption, energy usage, transportation usage, and the amount of rubbish, including whether it has been recycled. I hope these are the answers and that they are useful.

The rate of the population of cheetahs as compared to the previous years is good. There is only one death and the birth rate is high.

Therefore, the correct option is d, 1 death, 5 births, 3 immigration, 7 emigrations.

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Write in complete sentences.

What is a food web?

Answers

Answer:

A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem.

Explanation:

All human proteins are constructed from
Example=98)
different amino acids. (GIVE A NUMBER ONLY-

Answers

There are only 20 amino acids

Can someone please help me i really need help ASAP?

Thanks.

Answers

Answer:

A. Evaporation

Explanation:

Evaporation is when water is turned into water vapor by heat

what is dendritic cells and difference between dendritic cells and glial cell

Answers

Answer:

here--->

Explanation:

Dendritic cells (DC) are the professional antigen-presenting cells of the immune system. In their quiescent and mature form, the presentation of self-antigens by DC leads to tolerance; whereas, antigen presentation by mature DC, after stimulation by pathogen-associated molecular patterns, leads to the onset of antigen-specific immunity. DC has been found in many of the major organs in mammals (e.g. skin, heart, lungs, intestines, and spleen), while the brain has long been considered devoid of DC in the absence of neuroinflammation. Consequently, microglia, the resident immune cell of the brain, has been charged with many functional attributes commonly ascribed to DC.  

How color affects how solar energy is absorbed

Answers

Answer:

Darker colors absorb more sunlight than lighter colors

Explanation:

darker colors get warmer more quickly in the sunlight than lighter colors. The lighter colors reflect more of the sun's radiant energy, so they remain cooler to touch in the sunlight.

hope this helps :)

Chapter 43 concept mapping hormones and the endocrine system

Answers

The endocrine system is controlled by the hypothalamus which regulates the pituitary gland which releases the hormones that affect the ovaries, pancreas, testes, adrenal glands, and thyroid gland.

What do you mean by Endocrine system?

The endocrine system may be defined as a system that is composed of various glands and organs which are responsible for the secretion of hormones into the bloodstream and play their role at the target sites.

Ovaries secrete estrogen. The pancreas secretes insulin and glucagon. Testes secrete testosterone. The adrenal glands secrete epinephrine and norepinephrine. The thyroid gland secretes thyroid hormone and calcitonin.

Therefore, each blank is filled with respect to its position and function.

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Which procedure is involved in the development of the fetus?

formation of a zygote

the start of mentruation

formation of organ systems

muscle contractions in the uterus

Answers

Answer:

formation of organ systems

Explanation:

Actually, answer might be formation of organ systems b/c fetus are unborn offspring that have organ systems in place. Thus to develop a fetus the zygote has to multiply and eventually form organ systems (around 8 weeks from conception).

Formation of the zygote is the first step in developing a fetus


1. Explain how birds of prey are adapted to obtaining their food.​

Answers

Answer:

HER IS THE ANSWERHOPE IT WILL HELP YOU PLEASE MARK AS BRAINLIEST

examples of respiratory diseases​

Answers

Respiratory Diseases include:

•asthma

•chronic obstructive pulmonary disease (COPD)

•pulmonary fibrosis

•pneumonia

•lung cancer

•Emphysema

•Pleural Effusion.

c. How could a higher rate of "reusing, reducing, or recycling" change the way money
is spent within a society? (1 point)

Answers

To reduce waste means to avoid making  use of things  that may lead to too much accumulation of  waste as this will help to reduce waste.

Explain briefly?

To reuse waste is to re-use the waste items in a situation where the waste are still good instead of disposing the waste.

To recycle waste is to turn the waste into something useful as the recycle waste can be turn into something of  valuable for human use.

Inconclusion An effective way to manage waste in a shop.

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How many moles of LiCl are contained in 50.0 mL of 0.600 M solution?

Answers

Answer:

0.0300 moles LiCl

Explanation:

You can find the amount of moles using the molarity formula. The general structure looks like this:

Molar Concentration (M) = moles / volume (L)

You were given the molar concentration and volume in milliliters. Once you convert the volume to liters (by dividing by 1,000), substitute the values into the molarity formula. Then, you can simplify to find moles. The final answer should have 3 sig figs according to the given values.

50 mL / 1,000 = 0.0500 L

0.600 M = moles / 0.0500 L

(0.600 M) x (0.0500 L) = moles

0.0300 = moles

explain how cell theoery changed medicine?

Answers

Answer: Knowing that all living things are made up of cells allows us to understand how organisms are created, grow, and die. That information helps us understand how new life is created, why organisms take the form they do, how cancer spreads, how diseases can be managed, and more.

Explanation:

photosynthetic autotrophs​

Answers

Answer:

Photosynthetic autotrophic bacteria use sunlight to make their own food. Photosynthetic autotrophs synthesize organic compounds. Chemosynthetic autotrophic bacteria make use of chemical to prepare their food.

Photosynthetic autotrophs, which make food using the energy in sunlight, include (a) plants, (b) algae, and (c) certain bacteria.

What was the time period where dinosaurs existed?

Answers

Answer:

The Mesozoic Era is the answer

Answer:

Explanation:

Mesozoic Era

Gametes have the chromosome number of the parent cell.

twice half

Answers

Answer:

When meisosis occurs, a parent cell creates 4 gamete cells with 23 chromosomes in each.

how are antibiotics able to target the bacteria cells but not the healthy cells within your body ?

Answers

Answer:

See below

Explanation:

Antibiotics:Medications used specifically against bacteria are called antibiotics.

Difference between bacterial cells and our healthy cells:

Bacterial cells have cell walls. However, Healthy cells of our body lack cell wall.

Why are antibiotics able to target bacterial cells:

Antibiotics are specific in their functions. They are designed as to attack only bacterial cells. They attack the cell wall of the bacterial cell most often. Since, the healthy cells of our body lack cell wall, antibiotics are not able to attack healthy cells of our body.

In this way, our body cells are safe from the attack of antibiotics.

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Your research paper should start with your claim. b) In paragraph form, give two examples of scientific information that support each part of your claim. c) Include a summary paragraph that reiterates your claim and explains how your research defends your claim. d) Include a list of resources you used in defending your claim.

Answers

Your research paper should start with your claim in paragraph form, and give two examples of scientific information that support each part of your claim.

What do you mean by Research paper?

A research paper may be defined as a composition in which you illustrate what you have comprehended after investigating your chosen topic in depth.

Any research paper consists of an abstract, the methodology, observations, conclusions, and at last reference.

If your research paper supports the claim, then it will be formatted the claims in paragraph form, with two examples of scientific information that support each part of your claim.

Therefore, it is well described above.

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Which of the following is NOT a symptom of type I diabetes?
A) increased thirst
B)frequent urination
C) unexpected weight gain
D) fatigue

Answers

D. Thirst, urination and fatigue are all symptoms of type 1 diabetes. Weight loss is more common than weight gain.

If one strand of DNA is
AGC , the complementary (matching) strand of DNA would be

Answers

Answer:

GAT

hope it helps!

8. A soft-drink bottle resoNtes as air is blown across its top. What happens to the resoNnce frequency as the level of fluid in the bottle decreases?

Answers

Let me know if you need help :)

Look at the table you filled in above. How does the numbers for how much the snakes are consumed compare to how much these predators consume other organisms in the habitat (particularly mammals)? What could be a reason for the differences?

Answers

The number of organisms decreases on movement from producers to consumers in a food chain. This happens due to decreased energy levels at higher trophic levels.

What is a food chain?

Food chain is the sequence of matter and energy transfers as food from one organism to another.

Food chains interconnect locally into a food web as most organisms consume more than one type of animal or plant.

The number of organisms decreases on movement from producers to consumers in a food chain. This happens due to decreased energy levels at higher trophic levels.

Thus, it can be concluded that this is the main reason behind the number of snakes consumed as compared to other organisms.

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4. Which of the following are techniques to estimate population size? (Choose all that apply)
1) counting individuals
2) mark-and-recapture
3) population index
4) sampling

Answers

Answer:

The answer to ur question is 3 and 4

sampling is great for getting the amount people you need

and population index's usually have all the people who are paying bills in the area

The techniques to estimate population size are:

Counting individualsMark-and-recaptureSampling

What is population size estimation?

Population size estimation refers to the process of determining the number of individuals in a particular population. It is an important aspect of ecological and conservation research because it provides critical information about the status of a species and the health of an ecosystem.

There are several methods that can be used to estimate population size, including direct methods such as counting individuals, and indirect methods such as mark-and-recapture or sampling.

These methods can vary in their accuracy, practicality, and cost, and the choice of method often depends on the species being studied, the available resources, and the research objectives. Population size estimation is a key component of wildlife management, conservation planning, and biodiversity assessment.

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A jar made of 1/4 inch thick glass has an inside radius of 4.7 inches and total height of 13.3 inches (including the bottom thickness of glass). What isthe volume of the glass shell of the jar (in cubic inches)? -If f(x) = x3 - 2, find f(3).O 25O 24O 26O 20 A cube has edge length of 12 in. Find its volume. How did the world wars change womens role in American society? Why did some experts believe that Richard Nixon political career was over by the early 1960s? and yet another i hope you all had fun doing these problems In a school, 40% of the students have brown eyes. Find the experimental probability that in a group of 4 students, at least one of them has brown eyes. The problem has been simulated by generating random numbers. The digits 0-9 were used. Let numbers "0", "1", "2", and "3" represent the 40% of students with brown eyes. A sample of 20 random numbers is shown. 7918 7910 2546 1390 6075 1230 2386 0793 7359 3048 2816 6147 5978 5621 9732 9436 5971 3806 6173 1430 Experimental Probability = [?]% Read this excerpt from Susan Butcher and the Iditarod Trail.Meanwhile Wild Bill faced a number of problems. The temperature had dropped to fifty degrees below zero. Speed was important, but he could not push his team too hard. The dogs' lungs might frost from breathing heavily in the Arctic air. To protect his own lungs, Bill breathed only through his nose. The bitter wind howled and hurled snow in his face. The trail was a blur.Which conclusion can be formed based on the information in the excerpt?The mushers were more concerned about their own safety than the sick people in Nome.The mushers lungs were so used to cold Arctic air that it no longer posed problems for them.The mushers risked their own lives and their dogs lives to help the people of Nome.The mushers exposure to cold Arctic air caused them problems with their eyesight. In his business sojourns to the North, Ballinger came to like best which northern city? please help me get the answers Question 1 options:The Jones family is driving from San Antonio, Texas, to Anchorage, Alaska, which is a distance of 4304 miles. They have already driven 1639.2 miles.How much farther does the family need to drive to reach Anchorage?Enter your answer as a decimal in the box PLEASE HELP ME ASAP!A rug measures 5/6 foot long and 1/3 foot wide. What is the area of the rug?5/18t2 5/18t31 3/18 t21 3/18 t3 Oral reports must include evidence. What is evidence? Select all that apply.statistics facts that are accepted as true expert opinions opinion Write (9,-4) and (1,6) in slope intercept form, As part of a school project, Juanita was asked to draw an accurate sketch of her bedroom. using the dimensions and scale shown, determine the actual area of her room: 2.2in by 4.3in 1 inch is + to 5ft help i need a answer asap How many rotations does Neptune complete in one Earth day? a. 10 b. 5 c. 1.5 d. 1 If X=3 and y= -2, find xy + 2y.-2-9-10-1 Please help me with this question A maker of cash registers had to develop hand-crank-operated cash registers to sell to Latin American and African markets where access to reliable electricity is limited. The company used a ________ strategy to enter those global markets.