What must happen for a hypothesis to become a theory?
A. It must be well-tested and have supported results every time.
B. All possible alternative hypotheses must be tested first.
C. A hypothesis must be published and tested by scientists for a decade before it is a theory.
D. A theory is developed only after a hypothesis has been refuted and changed.​

Answers

Answer 1

Answer:

A.it must be well-tested and have supported results every time

Answer 2

Answer:

Explanation:b


Related Questions

What is the water table?

Answers

Answer:

C: The top of a saturated aquifer

Explanation:

The water table is the upper surface of the zone of saturation. This zone of saturation is where pores and fractures of the ground get saturated with water. It can also be simply explained as, the upper level, below which the ground is saturated.

What type of organism really spread and diversified during the Cenozoic?
reptiles
fish
amphibians
mammals

Answers

D) mammals really diversified during the Cenozoic era

Mammals really spread and diversified during the Cenozoic era. So, the correct option is D.

What was Cenozoic era?

The Cenozoic Era is defined as the third of the major eras in Earth's history that began about 66 million years ago and extends to the present. This epoch was the interval of time during which the continents assumed their modern configurations and geographic positions during which the Earth's flora and fauna evolved towards the present.

The Cenozoic Era is called the "Age of the Mammals", while the typical landscapes of North America began to develop during the Cenozoic. Birds and mammals rose to prominence after the extinction of giant reptiles.

Thus, Mammals really spread and diversified during the Cenozoic era. So, the correct option is D.

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How does random fertilization add to the genetic variation?

Answers

Genetic variation is also introduced by random fertilization of the gametes produced by meiosis. Any of the genetically unique sperm generated by a male may fertilize the genetically unique egg produced by a female. During metaphase I, the homologous pairs of chromosomes are aligned along the metaphase plate.
So I think that would be B) sorry if I’m wrong

what is a turgid cell

Answers

Answer:

turgid refers to cells or tissues that are swollen from water uptake. Many cell types in many different organisms can become turgid due to water uptake. Some cells will lyse, or split open if they become too turgid.

Answer:

Explanation: turgid refers to cells or tissues that are swollen from water uptake. Many cell types in many different organisms can become turgid due to water uptake. Some cells will lyse, or split open if they become too turgid.

please help!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Sturgeon and blue crabs

Answer:

Sturgeon and blue crabs

what ways do we use patterns of classification in science? give examples

Answers

Answer:

Classification is the way scientists use to categorize and organize all of life. It can help to distinguish how similar or different living organisms are to each other

Explanation:

Patterns are used in science to classify objects or phenomena into groups. There are patterns of both similarity and difference.

What is classification?

Classification is the way scientists use to group and categorize objects, phenomenon or life forms. It can help to distinguish how similar or different living organisms are to each other based upon the pattern of their structure and organization.

Patterns are regular and intelligible forms , sequences, or structure that  found throughout nature. Scientific questions may be generated when scientists observe a pattern of events or when something does not match an established pattern.

For example, the frozen water in an iceberg is arranged into a regular, repeating crystal structure—a pattern of similarity. Young children can observe a common pattern of difference, the differences between adult animals and their offspring.

Thus, it is clear from above explanation,  the ways to use patterns of classification in science.

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The word "mycotoxins" means © food poisons parasitic poisons fungus poisons O bacteria poisons​

Answers

Answer:

I think the answer is food poison

Answer: poisons fungus poisons

Explanation:

Which one the following is the most stable?​

Answers

Answer:

plz tell which is your following

Current wind, solar, nuclear and hydroelectric energy technologies
А
emit carbon dioxide
B
are able to deliver all the energy we need
с
don't have the efficiency and scale we need
D
burn a lot of fossil fuels

Answers

Bbbbbbbbbbbbbbbbbbbbbbbb

A man with heart disease lives in a family that eats a lot of red meat. Wha

to his environment?

O Analyze the patient's family history regarding heart disease

O Analyze the patient's diet to quantify cholesterol intake

O Determine the exact amount of cholesterol in the patient's blood

O Determine if the cholesterol will lead to high blood pressure

Answers

Answer:

Analyze the patient's diet to quantify cholesterol intake

Explanation:

This is because since the patient family consumed more of red meat, it should be analysed. Because researches find out that red meat either processed or unprocessed contain more protein than fish, milk, and it can raise cholesterol levels. Red meat contain high cholesterol and increaee in cholesterol levels can lead to coronary heart diseases.

Answer:

B

Explanation:

What are the 3 components/materials and energy needed to assemble carbohydrates?

Answers

Answer:

carbon, hydrogen, and oxygen.

Explanation:

2. TRUE OR FALSE: Most members of a species show differences, or
variations.

O true
O False

Answers

False is ur answer ur welcome :)

Answer:

True.

Explanation:

There is a thing called bio-diversity, which means that even though siblings might be the same gender, they won't look exactly the same. Same with animals. Some animals might be bigger, faster, stronger, or smarter than others from the same species.

I REALLY NEED HELP ASAP!!!!!!!

*I attached a picture but heres the question just in case!"

"The diagram below shows the structures of an animal cell. What is structure 3, and how does it help sustain life?"

Answers

Answer: I think it’s B but I am not sure sorry dude

Explanation:

the answer A i’m pretty sure

We run, play, work, study. We need energy to do all of this. In fact, one characteristic of living things is that they need and use energy. Two processes are needed in us humans to break down food to release the energy that is stored in our food. They are ____________ and cellular respiration.
A) circulation
B) digestion
C) excretion
D) photosynthesis

Answers

I think digestion would be the answer here. Humans can't do photosynthesis. Excretion is how we expel waste. And circulation is how oxygen gets to our cells.

Does this help?

Use your knowledge of the mechanism of photosynthesis and the data presented in the chart to determine which of the statements is a correct explanation for the students' data.Group of answer choicesCup 2 had the highest rate of photosynthesis because it had the highest ratio of disks floating to wattage of light.Cup 1 had a low rate of photosynthesis because 0.5 grams of baking soda did not provide a sufficient amount of CO2.Cup 3 had the same rate of photosynthesis as Cup 1 because they had the same ratio of disks floating to wattage of light.Cup 4 had the lowest rate of photosynthesis because it had the least CO2.

Answers

Answer:

D. Cup 4 had the lowest rate of photosynthesis because it had the least CO2.

Explanation:

Carbondioxide gas is the main reactant for the process of photosynthesis which decides the production of food in the leaves. If plants has high amount of carbondioxide gas and water so in the presence of sunlight it produces more food in the leaves in the form of glucose so we can conclude that the  lowest rate of photosynthesis occurs due to presence of least concentration of carbondioxide gas in the cup 4.

The phylogenetic tree shown shows the evolutionary relationships among finches
What can be concluded from this diagram?
A. Warbler finches and cactus finches are the most closely related.
B. Tree finches and warbler finches are the least closely related.
C. No finches have a common ancestor.
D. Tree finches and cactus finches have a common ancestor.

Answers

I’m going to say d or b. But mainly D
Hope this helps :)

The phylogenetic tree shown shows tree finches and cactus finches have a common ancestor. So, the correct option is D.

What is Phylogenetic tree?

A branching diagram that depicts the evolutionary relationships between a set of creatures, species, or genes is called a phylogenetic tree, sometimes referred to as an evolutionary tree. On the basis of the similarities and contrasts in their physical or genetic traits, it depicts the evolutionary history of these groups.

We can draw the conclusion that cactus and tree finches are more closely connected to one another than they are to any other finch species on the tree. The diagram does not indicate if tree finches and warbler finches are more or less closely related to one another, or whether cactus finches and warbler finches are.

Therefore, the correct option is D.

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Give two examples of pioneer species.

Answers

Answer:

Two examples of pioneer species are lichens and bacteria

Explanation:

helps it helps

have a great day

How does temperature affect rocks?

Temperature can cause rocks to expand or contract.
Temperature can change the texture of a rock.
Temperature can relocate rocks.
Temperature changes rock composition.

Answers

Answer:

temperature can cause rocks to expand and contract

When the person from number one was creating "true breeding" lines of plants for certain traits, what method was used?

Answers

Complete question:

When the person from number one was creating true-breeding lines of plants for certain traits, what method was used?

A. Self pollination over and over again while discarding plants with unwanted traits

B. Cross-pollination over and over while discarding plans with unwanted traits

C. Allowing for cross-pollination by bees

D. Not allowing the plants to pollinate at all

Answer:

A. Self pollination over and over again while discarding plants with unwanted traits

Explanation:

Due to technical problems, you will find the complete explanation in the attached files.

the functions of stem ​

Answers

Functions of a stem is the support of the leaves that are there to conduct water and the minerals that leave the leaves where they are converted to photosynthesis and then transports to the rest of the plant as
a example the root

What would be the best reason for having the lamp on during the experiment

Answers

Answer:

I'm not entirely sure what the experiment is BUT if I had to guess it would to help you see.

Explanation:

Sorry, I couldn't help it. In all reality I'm not possitive as to what the experiment is so I can't really give you a true answer besides this one

suppose that the local temperate changed in favor of greater oxygen levels in the water. write a short paragraph to describe how both the population of the small fish species and the wading bird population would change in response to the new oxygen lovers over the next six months. then explain why these changes occur

Answers

Explanation:

suppose that the local temperate changed in favor of greater oxygen levels in the water. write a short paragraph to describe how both the population of the small fish species and the wading bird population would change in response to the new oxygen lovers over the next six months. then explain why these changes occur

Which term refers to a significant but short in duration physical change or event within an ecosystem

A. deforestation
B. succession
C. climax
D. disturbance

Answers

Well tbh A sounds to harsh to be it b no c no So I would with D:) I am rlly sorry if I am wrong

true or false

cellular respiration releases chemical energy from sugars

Answers

i believe it's True cos I've read this once

Humans have 46 chromosomes in each of their body cells. Jason has a small cut on his right arm and his body cells are undergoing mitosis to repair the damage. How many chromosomes will be in each new body cell after cell division?

Answers

Answer:

23

Explanation:

Using information from the cladogram and the data table shown below, which of the following best describes the evolutionary history of gorillas?

They are more closely related to salamanders than they are to lizards.
They evolved into a separate species as a result of bipedal motion.
They have jaws, lungs, hair, an amniotic membrane, and a tail but lack bipedal motion.
They share a more recent common evolutionary ancestor with leopards than they do with lizards.

Answers

Answer:

Several differences allow the human to walk erect on two legs with a striding gait rather than move in a knuckle-walking fashion like the gorilla. In the pelvis these differences include ...

A land based global community of organisms is called a?

Answers

A terrestrial ecosystem is a land-based community of organisms.

How many copies of each chromosome do you have?

Answers

Answer:

2

Explanation:

Answer is 2....znskskskskskndk

Answer:

We all have two copies of every chromosome (except males who have one X and one Y plus 22 other pairs). Mom and dad give us copies of half their DNA -- one of each chromosome. At the end, we all have two copies of each of our chromosomes just like mom and dad

What’s the answer to this I didn’t mean to click this btw

Answers

It’s the 4th answer, trust me.

A certain mutation in the gene for hemoglobin results in the red blood cells becoming sticky,
rigid, and irregularly shaped. These irregularly shaped red blood cells block the flow of blood
throughout the body. A single base mutation is responsible for these irregularly shaped blood cells.

Which of these mutations most likely results in the mutated hemoglobin gene?
F. Insertion
G. Deletion
H. Duplication
J. Substitution

Answers

Answer:J

Explanation:Substitution

Mutation in genes can result in different types of abnormalities. In gene related to hemoglobin makes RBCs sticky, irregular shaped, this is because of substitution.

What is substitution?

Mutation is a type of replication error during formation of new DNA.

In substitution mutation, incorrect nucleotide is placed at incorrect position during DNA replication, a point mutation occur in which a single nucleotide is substituted.

It actually does not add or remove any nucleotide from the sequence, just it substitute it.

In gene related to hemoglobin, the amino acid glutamic acid gets replaced with the valine amino acid at position 6 in beta-globin, which results in sticky, irregularly shaped red blood cells.

Thus the correct option is J.

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