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Haldane, a Soviet scientist, proposed in 1929 that a combination of carbon dioxide, water, and ammonia, when exposed to ultraviolet light, can form a variety of organic molecules. The conditions modeled by Haldane's experiment simulated the oceans of early Earth. Which hypothesis of the origin of life on primitive Earth is described by Haldane's experiment? A) panspermia hypothesis B) abiogenesis hypothesis C) primordial soup hypothesis D) hydrothermal vent hypothesis

Answers

Answer 1

Answer: In an experiment by Stanley Miller, the chemicals methane, hydrogen, ammonia, and watervapor were subjected to a high-energy.

D). Is your correct answer

Explanation:


Related Questions

All of the following are examples of limiting factors in an ecosystem except:

Water
Food
Population density
Space

Answers

Answer:

population density I hope this helps

A species of moth has a 2 varieties of wing color: brown and white. As winter approaches, the trees where the moths live loose their leaves. The moth's predators are birds who hunt for the moths as they rest on the dark tree bark. Every moth lays 100 eggs, but only about 10 from each egg cluster live to adulthood

Answers

Assuming that this question makes reference to the survivability of the two moth variations, we can confirm that the brown-colored moth will be better adapted to survive in the winter months.

Why are the brown moths more likely to survive?

This has to do with their ability to better hide from predators. As described in the question, their primary predator are birds that hunt them while resting on the tree bark. This means that the white-colored moths will stand out against the dark tree bark and be easier prey for the birds. This will eventually lead to all the moths in the area being brown-colored through the process of natural selection.  

Therefore, we can confirm that the brown-colored moth will be better adapted to survive in the winter months due to their ability to hide from predators.

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Which systems interactions are dependent on the plants ability to respond to the direction of light?

Answers

Photosynthesis and food transport has to rely on the plant to respond to the direction of the light​.

Deforestation is the clearing of Earth's forests on a massive scale, often resulting in damage to the quality of the land. Forests still cover about 30 percent of the world's land area, but swaths the size of Panama are lost each and every year. Deforestation on such a large scale has a dramatic effect on the carbon cycle. Which of the following describes the effect large scale forest clearing will have on the carbon cycle.

Answers

Answer: B

Explanation:

the less trees the more carbon

Large-scale forest clearing, such as deforestation, has a significant impact on the carbon cycle. The carbon cycle is the process by which carbon moves between the atmosphere, land, and oceans and is an important part of regulating the Earth's climate.

What is deforestation?

Forests are important for the carbon cycle because they absorb carbon dioxide from the atmosphere during photosynthesis and store it in their biomass and in the soil. When forests are cleared or burned, the carbon stored in the trees and soil is released into the atmosphere as carbon dioxide, contributing to greenhouse gas emissions and climate change. In addition, deforestation can disrupt the water cycle, leading to changes in rainfall patterns and soil moisture

Hence, large-scale forest clearing, such as deforestation, has a significant impact on the carbon cycle. The carbon cycle is the process by which carbon moves between the atmosphere, land, and oceans and is an important part of regulating the Earth's climate.

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what effects of human activity have on freshwater resources

Answers

Answer: Humans throwing trash into the water

Explanation:

That's very affective.

Hopes this helps.

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Explain how radioactive decay works?

Answers

A radioactive decay causes an unstable atomic nucleus to loose its energy by undergoing a transformation into one or more different atomic nuclei.

What is a radioactive decay?

A radioactive decay can be defined as a radioactive process in which an unstable atomic nucleus undergoes a spontaneous transformation into one or more different atomic nuclei and simultaneously emits radiation, accompanied with a loss of energy.

In Science, there are three main types of radioactive decay and these include the following:

Alpha decayBeta decayGamma decay

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which sun is providing energy to this planet, and can the planet sustain life ?

Answers

Answer:

Without the sun's heat and light, life on Earth would not exist.

Explanation: The sun has extremely important influences on our planet: It drives weather, ocean currents, seasons, and climate, and makes plant life possible through photosynthesis.

Answer:

no it cannot sustain itself without the sun.

Animals need the sun for vitimin D plants need it to photosynthesis and in the few cases that this isn't the case those plants are parasitic and still need photosynthesing plants to get energy from. So by removing the sun we lose plants that many herbovore animals rely on then they starve resulting in lose of food for carnivores so they starve aswell. And any life left after that would most likely freeze.

what are the four roles of nutrients in the body​

Answers

Answer:

provide energy, contribute to body structure, and/or regulate chemical processes in the body.

Description of a fungating tumor: Group of answer choices Open, exposed surface on the tumor Containing dead tissue Characterized by inflammation Large, soft, flesh tumor Mushrooming pattern of growth as tumor cells pile on top of each other

Answers

Mushrooming pattern of growth as tumor cells pile on top of each other best describes a fungating tumor which is option D.

What is a Tumor?

This is an abnormal growth which occurs when cell division takes place more than it ought to occur.

Since mushroom is an example of a fungi then a fungating tumor will be best described as having it piling on each other.

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if a new predator is introduced to an environment…

Answers

Answer:

The prey with unfavorable characteristics will survive and pass traits to future generations

Recycling of carbon through decomposition is carried out by which organisms?.

Answers

Answer:

Decomposers

Explanation:

Decomposers, like bacteria and fungi recycle carbon by decomposing dead organisms. This helps the carbon continue in its cycle.

The most threatened areas of high species diversity on Earth have been labeled ________________ and include mostly tropical rainforests, coastal areas, and islands.

Answers

Biodiversity hotspots

Which part of the nephron receives fluid from the glomerular capsular space?.

Answers

Answer: Proximal convoluted tubule.

Explanation:

Which statement best describes the relationship between cellular respiration and photosynthesis?
Group of answer choices

A. Cellular respiration produces oxygen, which is the reactant required for photosynthesis.
B.Cellular respiration produces carbon dioxide, which is the reactant required for photosynthesis.
C. Cellular respiration and photosynthesis have the same products but use different reactants.
D. Cellular respiration and photosynthesis are the same processes; one occurs in animal cells and the other in plant cells.

Answers

Answer:

option A is correct answer of given statement

Please write the correct answer and measure the bat please

Answers

The bat is 10 1/2 inches long

Help please! Will mark as brainliest! Please no links.

Answers

Answer:

Species A seems like it's growth rate spikes up right before every ten years. Species A also seems that it's growth rate is slowly dropping.

Species B seems like it's growth rate is somewhat stable. It happens to go up a bit on the growth but then comes back down. It is a normal growth rate compared to Species A.

I hope this helps you out! :)

Hello people ~
Nucellus embryo is

a) amphimictic haploid

b) amphimictic diploid

c) apomictic haploid

d) apomictic diploid

Answers

Answer:

apomictic diploid

Explanation:

Apomictic is related to ase xual reproductionIt is known as apomixis Rather than meosis viable embryo is formed within the confines of the seed coat without of it

Label the parts of this wave.
A
B
В:
A
C
>
o
D
<
mi
С
D

Answers

Explanation:

A-Crest

B-Amplitude

C-Trough

D-Wavelength

I hope it helped you

Which is a tough and rigid layer that surrounds plant cells, as well as some algal and bacterial cells?
cell wall
centriole
nucleus
cell membrane

Answers

The answer is Cell wall

The tough and rigid layer that surrounds plant cells, as well as some algal and bacterial cells, is called the cell wall. Therefore, the correct statement is option A.

What are the functions of cell wall?

The cell wall provides mechanical support to the cell, thereby, protecting it from damage caused by external factors. The cell wall consists of complex carbohydrates, such as cellulose, lignin, etc.

The cell membrane is selectively permeable, and the cell wall is porous allowing the passage of some molecules. The cell wall also helps in cell communication and signaling.

The cell wall determines the shape of the cell and helps in the regulation of growth and development. The thickness and composition of the cell wall change with respect to different environmental conditions and helps in the survival and function of many types of cells.

Therefore, the tough and rigid layer that surrounds plant cells is called the cell wall.

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f both parents each carry one mutated CFTR gene, Choose... of their children will probably have cystic fibrosis, Choose... of their children will probably be carriers, and Choose... of their children will probably not have cystic fibrosis or carry the mutated gene.

Answers

Answer:

1/4 of their children will have CF and 3/4 will not have CF or be carries of the disease (1/4 technically won't even carry the mutation)

Explanation:

F dominant - f recessive

         F                       f

                     I

F        FF        I         Ff

     -------------------------------

f         Ff         I          ff

                      I

On average, over half of a college or university campus's greenhouse gas emissions is from ________. Group of answer choices heating buildings commuting cellular respiration electricity landfilling and combusting wastes PreviousNext

Answers

Cellular respiration is responsible for the release of higher amount of greenhouse gas in the atmosphere.

What is resposnible for the release of large amount of greenhouse gas?

Over half of a college or university campus's greenhouse gas emissions is from cellular respiration because of the large number of people studying in that college and university which regularly release carbondioxide gas during the process of respiration.

So we can conclude that cellular respiration is responsible for the release of higher amount of greenhouse gas in the atmosphere.

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How much of a 100.0 g sample of Au is left after 8.10 days if its half-life is 2.70 days?

Answers

The amount left is about 12.5 g of Au

What biomolecule stores genetic information?

Answers

Answer:

Nucleic acid would be the answer.

Explanation:

Nucleic acids store genetic information, while proteins build bone and muscle, carbohydrates are a quick source of energy, and lipids are essential to the development of the nervous system and hormones

In the dorsal columns, axons from the dorsal roots of spinal nerves that enter the spinal cord inferior to T6 ascend within the ________.

Answers

In the dorsal columns, axons from the dorsal roots of spinal nerves that enter the spinal cord inferior to T6 ascend within the cuneate fasciculus.

What do you mean by Spinal nerves?

Spinal nerves may be defined as a hybrid nerve, which holds the motor, sensory, and autonomic signals between the spinal cord and the body.

The cuneate fasciculus is located laterally in the upper thoracic and cervical spinal cord segments. It illustrates the lateral portion of the dorsal columns and bears input from thoracic to cervical C1 to T6 segments of the spinal cord.

Therefore, in the dorsal columns, axons from the dorsal roots of spinal nerves that enter the spinal cord inferior to T6 ascend within the cuneate fasciculus.

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The right side of the heart pumps oxygen-poor blood to the lungs in a process called ______ circulation.

Answers

Answer: pulmonary

Explanation:

A student collects data from yeast that is growing in a sealed container with sugar.
Time
(hours)
Oxygen Carbon Dioxide
Concentration in Concentration in
Container (%) Container (%)
Sugar
Concentration in
Container (mg/mL)
0
17
3
32
2
16
5
30
4
15
7
28
6
14
9
27
8
13
11
26
10
12
13
25
12
11
15
24
14
10
17
24
nich conclusion is supported by the data?
As the concentration of sugar decreases, the environment shifts toward aerobic conditions.
As the yeast breaks down sugar, it slowly releases more oxygen into the environment.
As the concentration of carbon dioxide increases, the environment shifts toward anaerobic conditions.
As the yeast noduces more carbon dioxide, it releases less sugar into the environment.

Answers

The conclusion supported by the data is that as yeast produces more carbon dioxide, it releases less sugar into the environment.

How do yeasts work in fermentation?

Through fermentation, yeasts break down the glucose molecule to produce energy for your cell. In this process, carbon dioxide and alcohol are formed, favoring the production of products such as bread and alcoholic beverages.

Whit this information, we can conclude that the conclusion supported by the data is that as yeast produces more carbon dioxide, it releases less sugar into the environment.

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Some sphinx moth caterpillars are called tomato hornworms. These large caterpillars do a tremendous amount of damage to tomato plants. Which method of moth control would be most dangerous to the honeybee, which is needed for plant pollination?.

Answers

Answer:

Spraying plants with insecticides

The method of moth control would be most dangerous to the honeybee, which is needed for plant pollination is spraying plants with insecticides.

What is pollination ?

Pollination is the transfer of pollen from a plant's anther to its stigma, allowing fertilization and seed production, most commonly by an animal or by wind.

Pollination is the transfer of pollen grains from stamens, the flower parts that produce them, to ovule-bearing organs or to the ovules (seed precursors). Pollen is simply caught in a drop of fluid secreted by the ovule in plants where the ovules are exposed, such as conifers and cycads.

Pollination is the process of moving pollen grains from the anther to the stigma of the same or different flowers. Self-pollination and cross-pollination are the two types of pollination.

Thus, The method of moth control would be most dangerous to the honeybee, which is needed for plant pollination is spraying plants with insecticides.

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_________ are secreted by one cell into the tissue fluid, diffuse to nearby cells in the same tissue, and stimulate their physiology.

Answers

The hormones are secreted by one cell into the tissue fluid, diffuse to nearby cells in the same tissue, and stimulate their physiology.

What are total no. of hormones ?

Scientists have recognized over 50 hormones withinside the human frame so far. Hormones and maximum of the tissues (in particular glands) that create and launch them make up your endocrine system. Hormones manipulate many exceptional physical processes, including: Metabolism.

Hormones are chemical messengers secreted into blood or extracellular fluid with the aid of using one cell that have an effect on the functioning of different cells. Most hormones flow into in blood, entering touch with basically all cells. However, a given hormone typically influences simplest a restrained variety of cells, which might be known as goal cells.

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Drag the tiles to the correct boxes to complete the pairs.
Match the following phases of stellar evolution to its characteristic.
black hole
red giant
black dwarf
brown dwart
white dwarf
does not undergo hydrogen fusion
has an outer shell of burning hydrogen
and a core of helium
a white dwarf that has lost all its energy
has a core of carbon that is not massive
enough to fuse
formed from the collapse of a white dwarf beyond 1.5 solar masses

Answers

1.red giant
2.brown dwarf
3white dwarf
4.black dwarf
5.black hole
PLATO!!

Answer:

brown

red

black dwarf

white dwarf

black hole

Explanation:

Which cell helps to move dust particles out of an organism? A ciliated cell B guard cell c muscle cell D red blood cell​

Answers

Answer:

A) A ciliated cell

The cells that help to move dust particles out of an organism are known as red blood cells. Thus, the correct option for this question is D.

What is the function of Red-blood cells?

The function of Red blood cells is determined by the fact that they carry oxygen from our lungs to the rest of our bodies. Then they make the return trip, taking carbon dioxide back to our lungs to be exhaled.

The amount of carbon dioxide that is accumulated in the body of an individual may be said to be a waste product because it is usually formed as the byproduct of several metabolic processes. Apart from carbon dioxide other waste products may also form in the body which is moved out of organisms with the help of red blood cells.

Therefore, the cells that help to move dust particles out of an organism are known as red blood cells. Thus, the correct option for this question is D.

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