Which process do scientists think provided Earth with an oxygen-rich atmosphere?
photosynthesis
respiration
radiometric dating
spontaneous generation
Answer:
Photosynthesis
Explanation:
Tiny organisms known as cyanobacteria, or blue-green algae conducted photosynthesis using sunshine, water and carbon dioxide to produce carbohydrates and oxygen.
PLEASE HELP FAST I AM ON A TIMER THANK YOU!!
When we analyzed haplotypes detected in mtDNA from the various sites where juncos lived, we found patterns in the data. We noticed that the more time that passed, the more mutations occurred. Mutations in DNA lead to differences in the juncos. Examine the data from the site below and circle the best claim.
(PLEASE LOOK AT PICTURE TO SEE THE DATA)
A.) Junco A and Junco G are very closely related—their DNA does not show many mutations.
B.) Junco A and Junco F are very closely related—their DNA does not show many mutations.
C.) Junco A and Junco N are not very closely related—their DNA shows many mutations.
D.) Junco A and Junco M are not very closely related—their DNA shows many mutations.
Answer:
The answer is c. Here is why. Look at my explination below
Explanation:
When you look at the table you can see which one is most looked at, and use the answer to find the data table, use that and you shall get your answer, my friend!
Identify the level(s) of protein structure present in this molecule. Select all that apply. primary secondary tertiary quaternary
The the levels of protein structure in the molecule would be tertiary and quaternary structures.
What are the levels of protein structure?The levels of protein structure are as follows:
primary secondary tertiary, and quaternary structuresThe primary structure is the peptide bonds of the amino acids.
The secondary structure is the alpha and beta helices.
Tertiary structure are folds in the protein structure.
Quaternary structure is the association of protein chains.
Therefore, the levels of protein structure in the molecule would be tertiary and quaternary structures.
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Why do baby bones contain more cartilage than an adult's?
What happens to the distance between molecules when a substance changes from a liquid to a gas? Why?
why did jesus commend the four friends instead of being mad that they had interrupted his speech
Answer:
Because jesus was a pretty cool dude
Explanation: he forgives us for our sins :)
and jesus wansnt mad at them for interupting him he loves us all
which type of drosophila probably changed the least over time?
The type of Drosophila that probably changed the least over time is the Drosophila melanogaster.
What do you mean by Drosophila?A Drosophila may be defined as a fruit fly that serves as one of the most important model organisms in the field of biological sciences due to its large chromosomes, high reproduction rate, and various varieties.
As compared to Drosophila willistoni, Drosophila equinoxialis, Drosophila equinoxialis caribbensis, etc. Drosophila melanogaster changed very least over time after analyzing its evolutionary pathway.
It is because it may consist of a large chromosome but a simple arrangement of genes, its well-specified segment polarity genes, pair-rule genes, and maternal effect genes.
Apart from this, it may also be because of less natural selection applied to Drosophila melanogaster.
Therefore, the type of Drosophila that probably changed the least over time is the Drosophila melanogaster.
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Weather is——
A- short-term and affects a local region
B- long-term and affects a local region
Answer ASAP and please be correct
How do you think water can become polluted?
An enzyme controlled reaction was carries out at 36°C. After 3 minutes, 240 cm' of product had been
produced. Calculate the rate of reaction is cm/s
How are Glucose, Proteins, and Fats used to make new molecules? And what types of molecules are made?
Answer:
Sometimes known as glycans, there are three common and principal types of polysaccharide, cellulose, starch and glycogen, all made by joining together molecules of glucose in different ways. It has been estimated that 50% of the world's organic carbon is found in one molecule; cellulose.
Need help answering packet
Describe what pollination is and how it
happens
Explanation:
Pollution is:
the presence in or introduced into the environment of a substance or thing that has harmful or poisonous.
typically caused by man made things, like factories when they leak pollutant air into the atmosphere and other items like ships when they leak oil pollutants into the waters.
Which gland/organ is responsible for the production of estrogen and ova?.
Answer:
Ovaries•function of the ovary is to produce the egg which develops in the Graafian follicle. The ovary is also responsible for the production of the hormones progesterone and estrogen.
Please Help I Need Help
Explanation:
symbitotic: close ecological relationship between two or more organisms that live in close contact
mutualism is a symbiotic relationship in which both organisms benefit;
parasitism is a symbiotic relationship in which one organism benefits while the other organism is harmed
commensalism one organism benefits, the other neither benefits nor is harmed
:commensalism: answers will vary; lesser long-nosed bat/saguaro cactus; human and pet dog
Mutulism: answers will vary, human and eyelash mite, clownfish.and sea anemone
parasitism answers will vary, caterpillar and wasp, human and tapeworm
PLEASE HELP ME THIS IS DUE BY 11:59 PM
Answer: boom
Explanation: hope this is right :)
Like the camel, many animals that live in soft sandy areas have large wide feet compared to their body size. The
large feet are an advantage in these environments because they -
are rapidly toughened by sharp sand grains
distribute body weight over a large area
allow rapid digging in the sand
Dreduce the vibrations caused by walking
Answer:
distribute body weight over a large area
Explanation:
This one's fairly simple. If you have large feet, then your body weight is distributed over a large area (you don't sink as much in sand). If your toes were small, massive body weight would sink the feet into sand.
Which act regulates the handling of
tailings from mining operations?
A. Endangered Species Act
B. Solid Waste Disposal Act
C. Occupational Health and Safety Act
Answer:
this is my answer The MMDR ActExplanation:
this my explanationThe MMDR Act empowers the central government to issue directions to the State governments to ensure sustainable development and exploitation of minerals to reduce adverse air, ground, water and ambient noise impactsAnswer: B. Solid Waste Disposal Act
Explanation:
....Brainliest given...
Refer to picture below:
Kavinsky
Answer:
now you can give the other person brainliest :3
Explanation:
What is produced by translation
any kind of energy is produced by translation
I can be good or bad. When I am good, I help you digest food and compete against pathogens for colonization sites.
archaebacteria
eubacteria
protist
fungi
plant
animal
The 1918 Influenza epidemic killed between 50 million and 100 million people worldwide. The epidemic happened near the end of World War I. More people died from the influenza epidemic than from the war. Which of the following explains why this virus was so deadly worldwide?
The following explains why this virus was so deadly worldwide was the cause of its worldly The 1918 Influenza epidemic killed among 50 million and a hundred million humans worldwide.
Which of the subsequent explains why this virus become so lethal worldwide?In the United States, the flu's toll become a good deal lower: a 1. five percent decline in GDP and a 2.1 percentage drop in consumption. The decline in financial hobbies mixed with expanded inflation led to huge declines withinside the actual returns on shares and short-time period authorities bonds.
This become truly the case with the influenza pandemic of 1918-1919, which become one of the worst contagion crises withinside the records of humankind.
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For anyone who answers ill give points!
Answer:
B
Explanation:
facilitated diffusion requires an ATP, which means it DOES take up energy
Pleasee help
how is climate change a feedback loop ?
Answer:
tbh i dont even know
Explanation:
What happens to the shape of a wave when on a string when you increase the frequency
Answer:The wavelength decreases
Explanation:
because im a god
what are two ways plants compete against each other
Answer:
One thing I know from school is that plants can end up taking all of the water from other plants if you don’t spread them out enough. They also can end up growing over another plant which can eventually if not fixed strangle the other plant and that ends up killing it.
Explanation:
these are my own examples I’m learning about this isn’t science or I was earlier this year which is why I know this.
Answer:
Two different ways that plant compete against eachother is...
1. Competing for food, light, water etc.
2. If you grow two plants next to eachother they will take over eachother's sunlight and start to shade eachother.
Explanation:
I learned this just a few months ago in my biology class.
What is a pathogen?………..
Answer:
A pathogen is defined as an organism causing disease to its host, with the severity of the disease symptoms referred to as virulence. Pathogens are taxonomically widely diverse and comprise viruses and bacteria as well as unicellular and multicellular eukaryotes.
A pathogen is an organism that causes disease.
Explanation:
A pathogen is usually defined as a microorganism that causes, or can cause, disease. We have defined a pathogen as a microbe that can cause damage in a host.
Describe the energy conversions that occur as a microwave oven heats a cup of water. Give at least two energy conversions. Explain how these energy conversions affect the process of heating water particles in a cup using a microwave . Enter your answer in the box provided .
The energy conversions that occur as a microwave oven heats a cup of water is Electrical energy to Heat energy.
Energy conversions
The energy conversions that occur as a microwave oven heats a cup of water is listed below:
Electrical energy to Heat energyThe electrical energy powers the microwave which in turn heats up the water by converting electrical energy into heat energy that heats up the water particles in a cup in a microwave.
Thus, the energy conversions that occur as a microwave oven heats a cup of water is Electrical energy to Heat energy.
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What is the shortest interval on record between the birth of two siblings?
Answer:
208 days
Explanation:
The shortest interval between two children born to separate confinements is 208 days for Jayne Bleackley (New Zealand) who gave birth to Joseph Robert on 3 September 1999 and Annie Jessica Joyce on 30 March 2000.
explain in the different between barried method of contracetption and hormonal method contraception and given example for contraception method
A barrier method of contraception is a method that prevents the contact of sperm and ovum with the help of barriers. Examples include spermicidal creams, cervical caps, and condoms.
What do you mean by Contraception?Contraception may be defined as the method of restricting the number of children parents have. It is also comprehended as birth control or fertility control. It works in such a way that it prevents the process of successful fertilization.
Hormonal method contraception may be defined as those methods that alter the normal function and effectiveness of hormones like estrogen and progesterone. Examples include intrauterine devices, pills, injections, etc.
Therefore, the difference between the barrier method of contraception and the hormonal method of contraception is described above.
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