A scientific question can be answered by experiments. The most scientifically testable question is; can simple organic molecules form spontaneously in an oxygen-free atmosphere?
What is a scientifically testable question?We say that a question is scientifically testable if its answer can be found by carrying out a scientific research on the question.
Now having seen the question and considering all the options listed, the most scientifically testable question is; can simple organic molecules form spontaneously in an oxygen-free atmosphere?
Missing parts:
Which of the following questions about the origin of life on Earth is most scientifically testable? (A) Why were the earliest life-forms created using only twenty amino acids? (B) Did life originate to make the universe a better place? (C) Was catalytic RNA used by ancient organisms as a stepping stone to acquire protein enzymes? (D) Can simple organic molecules form spontaneously in an oxygen-free atmosphere?
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What 3 things increase CO2 in the atmosphere?
I need the answers asap
Please
Answer:
Deforestation
Burning of fossil fuels
for energy and transportation
Answer:
Volcanic Eruptions, burning fossil fuels, deforestation, fluorinated gases
Explanation:
Natural:
Volcanic EruptionsHuman:
Deforestation, Burning of fossil fuels, use of fluorinated gasesSmith Auto uses a sales journal, purchases journal, cash receipts journal, cash payments journal, and general journal
The general journal of Smith Auto will be the first place where the company will record its data.
What is a journal?The general journal is illustrated below:
July 3:
Debit inventory $3100
Credit Account payable $3100
July 6:
Debit Cash $600
Credit Sales revenue $600
Debit Cost of goods sold $450
Credit Inventory $450
July 7
Debit Equipment $5000
Credit Capital $5000
July 9
Debit Account receivable $750.
Credit Equipment $750
July 13
Debit Account receivable Bell $3200
Credit Sales revenue $3200
Debit Cost of goods sold = $2800
Credit Inventory = $2800
July 15
Debit Sales return $500
Credit Account receivable $500
July 22
Debit Building $20000
Credit Notes payable $20000
July 26
Debit Salaries expense $4400
Credit Cash $4400
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What are amino acids used for? ASAP
Answer:
Break down food, grow, repair body tissue
Explanation:
17. Which physical law states that all orbits are conic sections?
A. Kepler's first law
OB. Kepler's third law
O C. Newton's laws
D. Kepler's second and third laws
Answer:
Keplar's First Law
Explanation:
#PennFoster
JHMS
What is the general term for viruses and bacteria that make us sick?.
Which of the following is a concern in using genetic engineering in agriculture?
Group of answer choices
A. Pests are more likely to destroy genetically modified crops
B. The gene added to the crop may trigger allergies or other health concerns.
C. Genetically engineering crops is inexpensive, which harms small farmers.
D. All genetically engineered crops must be grown in a certain type of soil.
Answer:
B
Explanation:
Genetic engineering can affect health and the environment. Plus, it can trigger allergies.
Will mark brainliest if the answer is correct: ""how does the presence of reptilian and mammalian nephrons provide evidence for the relatedness of birds and other vertebrates?""
Answer:
Nephrons in birds, mammals, and reptiles are all extremely similar, more so than other structures in the bodies of different species, solidifying the relatedness through similarity.
Explanation:
Birds can be said to have "mammal-like" nephrons from the number of loops and overall structure of their kidneys, which, although they look very different, serve the same purpose and do it in largely the same way. Reptiles also have mammal-like nephrons, and it can be assumed that this evolutionary trait was kept because the specific structure of the nephrons is generally the most efficient.
The presence of reptilian and mammalian nephrons provide evidence for the relatedness of birds and other vertebrates because the nephrons are similar to that of reptiles and mammals and other birds and vertebrates.
What are nephrons?Nephrons are the functional unit of the kidney. There are many nephrons present in a kidney, it contains tubules and corpuscles.
The formation of urination is done by nephrons, the three functions of nephrons are filtration, reabsorption and secretion.
Thus, the presence of reptilian and mammalian nephrons provide evidence for the relatedness of birds and other vertebrates because the nephrons are similar to that of reptiles and mammals and other birds and vertebrates.
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please answer this correctly I will brainlist u
as a student , what can you do to protect the soil and water from being polluted ?
Which two animals use echolocation? bats and humans bats and dolphins dolphins and humans dolphins and butterflies.
The two animals which use echolocation are bats and dolphins.
Both hunt their prey by articulating high-pitched sounds and listening for the echoes.
What is echolocation?
Echolocation is a method used by bats, dolphins and other animals to select the location of objects using reflected sound. This allows the animals to move around in pitch darkness, so they can guide, hunt, identify friends and enemies, and avoid obstacles.
Thus, bats and dolphins are two animals that use echolocation.
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Answer:
Bats and Dolphins is the correct answer
Explanation:
What are the steps of photosynthesis? How do they take place?
Hopefully my answer helps you out today.
Explanation: "The process of Photosynthesis is simple."
The process of photosynthesis can be divided into four steps.
The process: The first step in photosynthesis is the absorption of light by the sun that is attached to the proteins in the thylakoids of chloroplasts.
Electron Transfer. ...
Generation of ATP. ... ATP is Energy-carrying molecule found in the cells of all living things.
Carbon Fixation.
Have a fantastic day or night!
There is a total of the 4 major steps in photosynthesis. Photosynthesis is the method plants use sunlight, water, and carbon dioxide to create oxygen.
What is the process of photosynthesis?During photosynthesis, flora absorbs carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, which means it loses electrons, at the same time as the carbon dioxide is reduced, which means it profits electrons.
It is handy to divide the photosynthetic method in flora into 4 stages, every happening in a described location of the chloroplast:
(1) absorption of light, (2) electron delivery main to the discount of NADP+ to NADPH, (3) technology of ATP, and (4) conversion of CO2 into carbohydrates (carbon fixation).To learn more about photosynthesis refer link:
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What do plantations or farms help people to live?
Answer:
Plantations and farms provide food for people so there won't be starvation
Select the BEST reason that humans engage in selective breeding/artificial selection:
Not Specific Enough, but the best reason in my opinion would be:
Answer:
Selective breeding of plants and animals, including crop plants with better yields. ornamental plants with particular flower shapes and colors. farm animals that produce more, better quality meat or wool.
Hello people ~
From a cross AABb x aaBb, the genotypes AaBB : AaBb : Aabb will be obtained in the ratio
(a) 1:1:2
(b) 1:2:1
(c) 2:1:1
(d) 2:1:2
Answer:
(b) 1:2:1
Explanation:
Using a dihybrid cross, when we cross AABb X aaBb, we get the genotypes AaBB, AaBb, and Aabb in the ratio 1:2:1. The aabb genotype will not be produced.
I am joyous to assist you at any time.
Answer:
Option B
Explanation:
1:2:1
Hope this help
Why is it important to be aware of Wisconsin’s karst features
Answer:
The cracks and crevasses in karst act as direct conduits for pollutants to enter groundwater, wells, springs, and streams. If you've got a sinkhole, you've got karst. Protect your groundwater and wells by being careful about what you spread in these areas.
Where are the renal corpuscles found in the kidney?.
Answer:
Cortex
Explanation:
The renal corpuscles are found in the cortex of the kidney. The collecting ducts make up the majority of the medulla. As a result, the presence or absence of renal corpuscles can be used to distinguish the cortex and medulla.
~
What do statements are true about a punt square
Answer:
Punnett squares predict the probability of different genotypes in offspring
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TC
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The __________ collect(s) urine, which drains continuously from the papillae, and empty it into the __________
The calyces collect urine, which drains continuously from the papillae, and empty it into the renal pelvis.
What are the calyces?The calyces are specialized chambers located in the kidneys which are required to pass the liquid (i.e., the urine).
The calyces are fundamental for the normal functioning of the urinary system and normal body functioning.
The renal pelvis refers to the renal portion of the structure known as the pelvis (it is a bone structure).
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If a substitution of one nitrogen base for another nitrogen base occurs in this change has no effect on amino acid being called for this would be known as a
Answer:
Point mutation
Explanation:
Since it does not alter the amino acid, it would be a point mutation (unless if it did change the amino acid, it would be a frameshift mutation).
consequences of recent human migrations on human health
Explanation:
The most frequent health problems of newly arrived refugees and migrants include accidental injuries, hypothermia, burns, gastrointestinal illnesses, cardiovascular events, pregnancy- and delivery-related complications, diabetes and hypertension.
The failure of the brain to work properly would most directly affect the what?
Answer:
The nervous system
It involves the brain
Since different species of penguin may occupy the same habitat, explain why they may continue to remain separate species.
Answer:
Some penguins may live in the same location that doesn't mean they have to be the same species of a penguin. They may not be attracted to other species that live there.
Explanation:
same as above
When should dna be replicated? what life events would include dna replication?.
Answer:
During growth and development i.e, as you get bigger because the cells are multiplying in number.
During repair of worn out cells and tissues e.g if you get a cut.
(It also happens in your hair and skin, but, I wouldn't label these as "life events"
Hope this helps(:
Which chromosomes shown below are homologous?
A) B and C
B) D and B
C) C and A
D) A and B
The chromosomes shown below are homologous: C and A, which are in option C as Homologous chromosomes are a pair of chromosomes that carry genes for the same traits, such as eye color or height.
What are homologous chromosomes?Homologous chromosomes are important for the process of meiosis, which is the type of cell division that produces gametes (sex cells) in eukaryotes. During meiosis, homologous chromosomes pair up and exchange genetic material in a process called crossing over. This allows for the mixing and shuffling of genetic information, which increases genetic diversity and contributes to the evolution of populations.
Hence, the chromosomes shown below are homologous in C and A, which are in option C. Homologous chromosomes are a pair of chromosomes that carry genes for the same traits, such as eye color or height.
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Was the ancestor terrestrial, aquatic, or live on both land and in water?
Answer:
Starting about 375 million years ago, transitional “fishapods,” with both primitive, fish-like traits and adaptations for semi-aquatic living, begin to appear in the fossil record.
name a national park that is located in the Midwestern and development region
Answer:
Here are some national parks lol:
Badlands National Park (SD) Cuyahoga Valley National Park (OH) Gateway Arch National Park (MO) Hot Springs National Park (AR) Indiana Dunes National Lakeshore (IN) Isle Royale National Park (MI) Theodore Roosevelt National Park (ND) Voyageurs National Park (MN) Wind Cave National Park (SD)
Explanation:
According to the Frank-Starling Law of the heart, as contraction strength increases the stroke volume ________. Group of answer choices decreases shows no change increases
We can confirm that this law tells us that both stroke volume and contraction strength increase at the same time.
What is the Frank-Starling Law of the heart?This law indicates the relationship between the volume of the ventricle, specifically the left ventricle, and the strength of its contractions. It follows the logical approach that if there is more volume in the ventricle, the cardiac muscles will have to stretch to allow for the space, which in turn causes a much stronger contraction when these muscles activate.
Therefore, we can confirm that this law tells us that both stroke volume and contraction strength increase at the same time.
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What are the 3 main NATURAL processes of the carbon cycle?
Answer:
The Carbon Cycle
Carbon moves from the atmosphere to plants.
Carbon moves from plants to animals.
Carbon moves from plants and animals to soils.
Carbon moves from living things to the atmosphere.
Carbon moves from fossil fuels to the atmosphere when fuels are burned.
Carbon moves from the atmosphere to the oceans.
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The Toucan has a long, narrow beak that allows it to reach fruit that is hard to reach for other birds. Plants, like the Monstera Plant, in the rainforest have long, grooved leaves to drop water to the forest floor. The excessive water that falls in the rainforest could lead to mold, so the leaves adapted to have “drip tips” that allow the water to run off of the leaves.
What type of adaptations are these?
Answer:
The Toucan, as an animal, has to eat. So, the Toucan developed a more aggressive adaptation to get food. On the other hand, the Monstera Plant had to do something about the mold situation. So, it developed a less aggressive adaptation, more of a defensive one, to combat its issues.
Explanation:
the diagram shows represents the number and age of fossils found in the grand canyon. the width of each shaded area in the diagram indicates the relative number of fossils found. which of the following statements is best supported by the fossil record
The fossil record from the grand canyon shows that organisms in group D were able to survive and remain relatively stable for the longest duration.
What are fossils?Fossils are remains of plantsand animals that have been preserved for a long time within rocks and underground.
The fossils records found in the grand canyon shows that the organisms in group D remained relatively unchanged while other organisms either went extinct or kept undergoing changes in their population.
Therefore, it can be concluded that the organisms in group D were able to survive and remain relatively stable for the longest duration.
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Match the following.
1 .
omnivores
2 .
herbivores
3 .
scavengers
4 .
carnivores
wolves, coyotes
cattle, deer, mice
owls, snakes, alligators
hyenas, crows, vultures
Answer:
1. wolves, coyotes
2. cattle, deer, mice
3. hyenas, crows, vultures
4. owls, snakes. alligators