Which of the following is a testable hypotheses
Answer:
B.
Explanation:
B. is the only hypothesis here that is testable. this means it can also be proved true or false. you cannot test the other three or prove them true or false.
hi please help this question is based on what you think
Does luck play a roll in evolution ? EXPLAIN WELL.
Answer:
Yes
Explanation:
If u want to equate that with “luck” feel free. There are any number of points in natural history where any species, not just us, could have turned out very differently.
Had the climate not changed in Africa…. Forcing our distant relatives from the forested areas into the plains… We might very well still number among the “great apes” rather than the genus “Homo”.
There would be dozens of simialar “what ifs” in our past. The entire spectrum of life on Earth might have turned out very differently indeed had the Permian Extinction not happened…. Those life-forms that populated the Earth prior to this event were very different than those that evolved from the few survivors. (Over 90% of all life on Earth was presumed to have been killed off.)
38. The factors that determine the size of a wave are wind speed, fetch,
and_________.
a)water temperature
b)water salinity
c)amount of sediment on d)the ocean floor
d)the length of time that the wind blows
Answer:
d) the length of tim that the wind blows
Strawberry plants reproduce by using _____. fertilization stolons corms meiosis
Answer:
Stolons
Explanation:
Stolons are long stems that grow sideways from a strawberry plant. This is usually the method used for reproduction in strawberry plants.
I hope this answer helped you!
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Sam is investigating the factors that affect photosynthesis. She keeps some plants in the dark for 24 - 48 hours. They receive no light. What does this remove from the plants?
Answer:
In photosynthesis, sunlight is necessary for it allows the plant to synthesize food from the CO2 and water. Without the light, it cannot carry out photosynthesis and create the food to feed itself.
By keeping some plants in the dark, Sam is removing the ability of the plant to capture light for photosynthesis.
Photosynthesis is a process whereby green plants capture light energy for the synthesis of carbohydrates using inorganic raw materials such as water and carbon dioxide.
The process of photosynthesis takes place in 2 major steps
Light-dependent reactionLight-independent reactionDuring light-dependent reaction, energy from light excites chlorophyll molecules and cause an electron to be displaced. The electron in the chlorophyll is replaced by the electron in water, leading to the cleavage of the bond between H and O and the evolution of O2. ATP and NADPH are produced and these are utilized in the light-independent reaction.
In the light-independent reaction, the molecules synthesized from the light-dependent reaction are used to fix carbon dioxide in a series of reactions resulting in the formation of carbohydrates.
Hence, keeping some plants in the dark will alt the light-dependent reaction and the entire photosynthesis process at large.
More on photosynthesis can be found here: rainly.com/question/1388366
Which of the following provides the best summary of the process of natural
selection?
A. Populations become better adapted to their environment.
B. Individuals pass on their best traits to their offspring.
O C. Population sizes increase with every generation.
D. Individuals always change in response to their environment.
Answer:d
Explanation:
it’s right
How does an ancestor population evolve into descendant species with differences in their shared structures
Answer:
Evolution takes the best traits for survival. each new descendant is better adapt to the environment than the previous ancestor.
An ancestor population gets evolved into a descendant species with differences by being separated into two different environments. This environment has varying adaptive traits which cause different changes in each descendant species.
What is descendant species?A temporal series of populations or genes which are connected by a continuous line of descent from ancestor is referred to as descendant species.
An ancestor population gets evolved into a descendant species with differences by being separated into two different environments.
This environment has different adaptive traits which cause different changes in each descendant species.
This environment has varying adaptive traits which cause different changes in each descendant species.
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Since the supercontinent Pangaea split up ~200 million years ago, the continents have remained in essentially the same positions. Do you agree?
Answer:
não concordo
Explanation:
pois com o passar do tempo por causa de algumas influencias naturais os continentes vão mudando de forma e posições
Produces four daughter cells
Mitosis or meiosis
Answer:
Meiosis
Explanation:
Mitosis and meiosis are both types of cell divisions.
In mitosis, a parent cell undergoes one division and produces an identical, diploid cell. This results in 2 daughter cells.
In meiosis, a parent cell undergoes two divisions. This produces unique, haploid cells. The result is 4 daughter cells that are not identical to the parent cell.
Therefore, the answer is meiosis. Meiosis produces four daughter cells.
Because we can't see through a gas cloud, we would not use optical telescopes which collect
visible light to form images of stars inside a gas cloud. Which type of telescope would we use
to study new stars inside the giant gas cloud and why?
ANSWER ASAP
Answer: radio telescopes can be used.
Explanation:
Radio telescopes can be used to see through the dust and the star being born. The stars are born into clouds of gases in the space. Due to gravity more and more gas get collected and it forms a clump. When the clump get big enough the hydrogen atom crash each other to form the helium. The clump of gas becomes a star. The radio telescopes can be used to take pictures of these stars within the clump of gas. It can also be used to take picture of fusion of gases within a star to initiate the formation of new star.
Answer:
It's an infrared telescope.
Explanation:
We can't rely on an optical telescope since it only shows what we can see. In turn, we can use an infrared telescope because it allows us to see heat. We can use this heat to study celestial bodies, stars, and gases.
Blood that is rich in oxygen leaves the heart through the _____. aorta septum right ventricle left atrium
The left atrium.
Hope it helps!
Water is present in every solution Yes or No?
Answer:
No
Explanation:
there could be water, but there doesn't have to be water
The heart contracts twice for every heartbeat one contraction is the atrial contraction while the other is the venture true or false
Answer:
True. The heart contracts twice per heartbeat. One contraction is the ventricular and the other one is the artrial.
If a female who is a carrier for colorblindness carries a man who is color blind. What is the percent chance their daughter will be colorblind.
Answer:
If both a female carrier and a male carrier of a color blind gene have a daughter, there will be a 50% chance of them also being colorblind.
Explanation:
You are working in a lab and think you may be observing a new organism. What minimal level of structural organization would you need to be observing? What are some characteristics you would need to observe to ensure that it is a living organism?
Answer:
observe it's heart you would notice some sounds and to that the chest ot the organism is going up and down....and also a new organism you must make sure you check all it's body with microscope cause you don't really know if it's deadly or friendly appearances can be deceptive
First of all observe the heart you would notice some sounds and after that check chest of the organism properly working or not that is going up and down and check the organism under microscope properly.
What are the characteristics of living organisms?The main characteristics of living organisms are movement, reproduction, ability to sense the environment,and growth and development. Some internal features such as metabolism, self- replication,and self- organization, interaction all these abilities are obtained by living organisms.
The living organism grows in shape and size throughout his whole life, perform metabolic action, interaction ability as well as adaptation and respiration is the main characters of living organisms.
Living things can reproduce their young ones who are similar genetically as well as identically. They have capacity to feed their young ones.
Therefore,first of all observe the heart you would notice some sounds and after that check chest of the organism properly working or not that is going up and down and check the organism under microscope properly.
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A physician conducts a survey among 100 patients suffering from migraine headaches severity among his patients. What kind of data analysis would he apply to interpret the results obtained from this survey?
Answer:
The correct answer should be D) Qualitative and inferential
Answer:
Qualitative and inferential
Explanation:
As a mouse undergoes respiration, it produces lactate. This type of respiration can be classified as
acidic
alcoholic
aerobic
anaerobic
Raccoons and red pandas have more similar DNA sequences than red
pandas and giant pandas do. What does that tell scientists?
A. Red pandas and giant pandas share a more recent common
ancestor than red pandas and raccoons.
B. Red pandas and raccoons share a more recent common ancestor
than red pandas and giant pandas.
C. Raccoons descended from red pandas.
D. Red pandas descended from giant pandas.
Answer:
B. Red pandas and raccoons share a more recent common ancestor
than red pandas and giant pandas.
Explanation:
DNA sequencing is finding the sequence of base pairs in an organism's DNA, and it's often used to compare with other organisms. The more base pairs that are the same, the more similar the two organisms are, and this means that they share a more recent common ancestor.
We can't make any conclusions like C and D because we just don't have enough data to conclude that one descended from the other.
Answer: B
Explanation:
Red pandas and raccoons share a more recent common ancestor.
Which is released during the formation of a peride bond?
A five-carbon sugar
An amino group
An amino acid
A water molecule
Explanation:
an amino group
Which of the following parts of ruminant stomach is called the honeycomb? And why?
A. Rumen
B. Reticulum
C. Abomasum
D. Omasum
Answer:
Hello
I think Reticulum is right.
Explanation:
There appears to be some relationship between population density and the presence of large dead zones. Can you explain why dead zones seem to be more prominent in areas of high
population density
Nitrogen and phosphorus runoff from sewage and agricultural activities in high population centers leads to the formation of dead zones.
People in these high population areas have over fished their coastal waters, leading
dead zones
The abundance of cruise ships in these high population centers results in the production of large amounts of pollution, leading to the formation of dead zones.
This is a random correlation and not a result of population centers causing the dead zones
Answer: Dead zones can be defined as an area of significant pollution.
Explanation:
Dead zones are associated with waters with low-oxygen content and the organisms suffer from hypoxic conditions. These areas include the waters of oceans, lakes and other types of water bodies.
The dead zones are created due to human activities. The high density population of human kind require space to survive. They use and contaminate the nearby source of water body. The agriculture pollutants contains fertilizers and pesticides which contains nitrogen and phosphorus that runoff into the water body. Also the sewage discharge also increases the nitrogen content in nearby source. Thus makes the water body oxygen deficient.
The large population of human kind may depend on fishery as source of food thus they may create a dead zone in nearby water body by overfishing and depleting the population to a level of zero.
The cruise may introduce oil contaminants in the water body which can reduce the oxygen availability of the water hence, kill the organism and create a dead zone.
Answer: Nitrogen and phosphorus runoff from sewage and agricultural activities in high population centers leads to the formation of dead zones.
Explanation: your welcomes girlies <33
Using two of the following vocabulary words, explain how rainbows form: transmission, refraction, reflection, or absorption.
Answer:
refraction and reflaction
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what causes the phase of the moon?
A.The earth's shadow on the moon.
B.How much of the sunlit side of the moon faces Earth
C.Clouds blocking the moon's light.
Answer:
The answer is most likely B
Explanation:
Sunlight Side of the moon Faces
which of the following best describes the changes that take place in an ecosystem during primary succession
The given question is incomplete, the complete question is:
Which of the following best describes the changes that take place in an ecosystem during primary succession?
Lichens and mosses grow slowly on newly formed land, followed by grasses, shrubs, and trees.
Shrubs and trees regrow quickly in areas that have been disturbed by a forest fire.
Organisms compete for resources, and those that are best fit to survive establish themselves as the dominant species.
Natural disasters cause many populations to migrate to a new location in order to survive
Answer:
The correct answer is that the growth of lichens and mosses takes place gradually on the freshly formed land, and is succeeded by shrubs, grasses, and trees.
Explanation:
An array of changes that takes place within an ecosystem's biotic community with regard to modifications that occurs with time within the non-living constituents of an ecosystem until stability is attained within the ecosystem is termed as ecological succession. A succession, which takes place in a previous barren land where there is no existence of life is known as primary succession.
For example, a gradual growth of mosses and lichens on a freshly formed land, succeeded by shrubs, grasses, and trees is an illustration of primary succession. The pioneer species like mosses and lichens possesses the tendency to grow on the land, that is, not inhabited previously by any other species of plant and further helps in the growth of novel species of plants.
On the bare rocks, lichens discharge acids that assist in the process of rock withering as it reduces the compaction of the rocks. Further, the aggregation of soil takes place that facilitates the growth of mosses. Eventually, the mosses help in bettering the quality of the soil, which further helps in the growth of shrubs, grasses, and trees.
Answer: Explanation:
The person who asked this question didn't put any choices, so I am going to give you some examples of primary and secondary successions.
First what is primary and secondary succession?
Primary succession: it is the profession of growth, it developed on newly formed land.
Secondary succession: it is the redevelopment of a habitat that has been disturbed by an event such as a forest fire or a hurricane. “Tsunami, earthquake, or forest fire”
If you have answer choices like these(A) Lichens and mosses grow slowly on newly formed land, followed by grasses, shrubs, and trees.
(B) Shrubs and trees regrow quickly in areas that have been disturbed by a forest fire.
(C) Organisms compete for resources, and those that are best fit to survive establish themselves as the dominant species.
(D) Natural disasters cause many populations to migrate to a new location in order to survive.
Then your answer is:(A) Lichens and mosses grow slowly on newly formed land, followed by grasses, shrubs, and trees.
Why not the other choices?
Because; "(B) Shrubs and trees regrow quickly in areas that have been disturbed by a forest fire" That is secondary succession, (redevelopment of a habitat that has been disturbed)
Because; "(C) Organisms compete for resources, and those that are best fit to survive establish themselves as the dominant species." Just doesn't fit the description for either Primary or secondary succession.
Because; "(D) Natural disasters cause many populations to migrate to a new location in order to survive." That isn't either Primary or secondary succession because Primary succession is "newly growth" and secondary succession is "redeveloped habitat".
All of the following statements would be supported by the cell theory EXCEPT Your answer: Cells may grow to an unlimited size. All cells come from other cells. All living things are made of cells.
Answer:
The answer is Cells may grow to an unlimited size.
Explanation:
Cells cannot support itself when the volume increases more than the surface area of the cell which will lead to the cell rupturing. But, cells do form from other cells and every living thing is made of cells.
I hope I helped, please correct me if i'm wrong!
What is the main difference between carbohydrates and proteins
Answer:
Carbohydrates is an energy giving food therefore the end product is glucose, while protein is a body giving food therefore the end product is amino acid.
Indicate which syllable receives emphasis one pronouncing collagen
Answer:
kaa·luh·jn
Explanation:
The first syllable has the emphasis.
Describe the life cycle of amphibians using an example.
Answer:
In typical amphibian development, eggs are laid in water and larvae are adapted to an aquatic lifestyle. Frogs, toads, and newts all hatch from the eggs as larvae with external gills but it will take some time for the amphibians to interact outside with pulmonary respiration. Afterwards, newt larvae start a predatory lifestyle, while tadpoles mostly scrape food off surfaces with their tooth ridges.
Which of the following causes ozone depletion?
A. coal burning power plants releasing large amounts of sulfur
B. foaming agents or plastics releasing chloroflourocarbons
C. excessive carbon dioxide blanketing the earth
D. overuse of nitrogen-containing materials polluting bodies of water
Answer:
B. foaming agents or plastics releasing chloroflourocarbons
Explanation:
Causes : chlorofluorocarbon (CFCs), halons, and other compounds deplete the ozone layer. These chemicals are found in cleaning agents, aerosols, insulating foam, and refrigerants. CFCs and halons break down into chlorine and bromine which in turn destroy the ozone layer.
Answer:
Hello There. The correct answer is C. excessive carbon dioxide blanketing the Earth.
Explanation:
Because it means that Carbon dioxide spreads around the planet like a blanket, and is one of the main gases responsible for the absorption of infrared radiation (felt as heat), which comprises the bulk of solar energy. Hope It Helps! .ω.
Outline the phases of the menstrual cycle, or the period in woman. please this should be at least 150 words. I will mark as BRIANILIST, please don't copy from Google, thank you.
Answer:
Menstruation, the follicular process, the ovulation and the luteal period are the four stages of the menstrual cycle. Specific menstrual complications include extreme or painful spells and a premenstrual syndrome (PMS). Knowing that a woman is most likely to conceive in the menstrual cycle can increase the chance of pregnancy. in simpler words, Bleeding phase, Pre-fertile phase, Fertile phase, Releasing an egg (ovulation), Post-fertile phase.Estrogen rates increase and fall periodically during the menstrual cycle. Estrogen rates increase during the mid-follicular process, then drop precipitously after ovulation. This is followed by a secondary increase in estrogen levels during the mid-UT phase, with a decrease at the end of the menstrual cycle.Elevated levels of estrogen are a risk factor for breast and ovarian cancer. High levels of estrogen can increase your risk of blood clots and stroke. Estrogen superiority can also improve the risk of developing a thyroid disorder. This may contribute to signs such as exhaustion and increases in weight.
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