Edwin Hubble was an American astronomer who played a crucial role in collecting evidence to support the theory that the universe is constantly expanding outward and is not simply static. He used light from distance stars to calculate their movement.
Meanwhile, around this same period of time, a Russian physicist by the name of Mikhail Lomonosov worked tirelessly in his lab studying different chemical reactions. Lomonosov would later help in developing the Law of Mass Conservation which states that during a chemical reaction the total mass of the substances before the reaction is equal to the total mass after the chemical reaction.
How are the methods used in the pursuit of a scientific explanation different between Edwin Hubble and Mikhail Lomonosov?
A) Edwin Hubble carefully identified and manipulated variables to answer questions; Mikhail Lomonosov made observations about the natural world.
B) Edwin Hubble made observations about what he studied; Mikhail Lomonosov did not
C) Edwin Hubble and Mikhail Lomonosov both used scientific equipment and collected evidence
D) Edwin Hubble made observations about the natural world; Mikhail Lomonosov carefully identified and manipulated variables to answer questions.
Answer:
C
Explanation:
These type of questions leave a great deal to be desired. There is no mention of which way Hubble used and manipulated data. He studied the variations in light to determine his conclusions.
Nor is there any mention of what Lomonosov did to come to the conclusion that conservation of mass is a constant.
We don't know what was done to get the results. Hubble was studying the universe; the conclusions made by Lomonosov depended on lab equipment that was very delicate (I'm assuming). I doubt he manipulated variables. He measured what he got.
I think the answer is C, but the question has so many assumptions that it is hard to know what answer to pick.
This illustration shows the flexion of the elbow joint. Identify two body systems that play a role in this action, and describe how they work together to flex the elbow.
The two body systems that play a role in the action is
Muscular systemSkeletal system Flexion of the elbow jointGenerally, the flexion of the elbow joint is anchored by two man bodily systems these are
The muscular system(muscular system is dedicated to the movement of the human body) The skeletal system( responsible to hold the proper-structure of the body) .Therefore,two body systems that play a role in the action is
Muscular system Skeletal systemFor more information on Nerves
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During cell division the ONLY cell organelle that breaks down and reforms is the
Answer:
kinetochore
Explanation:
The kinetochore breaks down and the sister chromatids separate. The nucleus reforms and the cell divides. The kinetochore becomes attached to the mitotic spindle.
1. What causes the inside of the cell to be more negative compared to the outside of the cell? Resting Potential, Action Potential
Answer:
Resting potential
Explanation:
This is because , the resting potential is negative in side of the cell because it has more negative charge inside than outside due to accumulation of alot of sodium and potassium ions. when an axon is at rest in the cell, the anions produce negative charge, the sodium pumps eject sodium out of the cell and potassium is injected in, and the sodium gates and potassium gates are all closed.
Which of the following human activities will have the greatest negative impact on the balance of organisms within an ocean ecosystem?
A. mapping of the ocean floor by marine scientists.
B. commercial fishing to provide food for humans
C. recreational boating in rivers, lakes, and streams.
D. monitoring of major global ocean currents
Answer:
The commercial fishing industry uses large nets to capture fish. Often these nets catch many species of organisms that are not used by humans.
can we prepare slides without stain? justify.
Answer:
Yes, it is easier to prepare slides without using any stains however, will not be able to see the colorless bodies present in the cell so that the stains help us to easily see. Preparing the slides is quite easier without staining and they are not visible to clearly the eyes
Explanation:Yes, it is easier to prepare slides without using any stains however, will not be able to see the colorless bodies present in the cell so that the stains help us to easily see. Preparing the slides is quite easier without staining and they are not visible to clearly the eyes
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Answer: B
Explanation:
i need help with this question please
Answer:
Raise the beams in less time
Explanation:
As the crane carries the beams in a lesser time its energy will reduce by time
Evaluate the use of stem cells from a patients own bone marrow instead of stem cells from an embryo. You must give a conclusion.
Answer:
The stem cells are the special cells that can develop into different types of specialized cells. There are two major stem cells in the body. The one is an embryonic stem cell that presents in the initial divided few cells that have the ability to develop into any type of specialized cells.
The other one is adult stem cells such as Bone marrow that contains two types of stem cells: hemopoietic which has the ability to produce all three types of cells, and stromal that able to produce special muscles and bones due to their limited ability to develop specialized cells or multipotent.
Thus, embryonic stem cells are more useful than adult stem cells.
Which of the following is something almost everyone can do to reduce his or
her carbon footprint?
O A. Take warmer showers. .
B. Turn off the lights when leaving the room.
O C. Cook with the oven more often.
D. Use the fireplace when a house is cold.
SUBMIT
Marine biologists are studying stickleback fish populations. There are two distinct variations in the sticklebacks based on phenotypes. They are found with the three spines more commonly in marine ecosystems while they are more commonly found without the three spines in freshwater ecosystems. This has been observed in many marine and freshwater ecosystems across the globe. What explains the variation seen in the image here across different aquatic ecosystems?
Answer:
Presence of predators.
Explanation:
Presence and absence of predators is the main cause of the presence of spines on stickleback fish populations because these spines helps in the protection against predators. The stickleback fish populations that lives in marine ecosystem have spines because there are many predators are present while on the other hand, stickleback fish populations of freshwater ecosystems have no spines due to no predator so they acquire the adaptation of having no spines.
In this exercise we have to explain the variations of the aquatic system, so we have to:
In this case, as long as a large increase in a specific population of fish takes place, we know that the predators of this system are needed.
What factors interfere in an ecosystem?They are:
Biotic factors: producing beings (plants and algae), consuming beings (herbivores and carnivores) and decomposing beings (fungi and bacteria). Abiotic factors: water, light (light energy), heat (thermal energy) and nutrients (chemical substances).See more about ecosystem at brainly.com/question/1673533
C. What is the genotype for patchwork fish?
2. What happens if you breed a patchwork fish with a fish that only has Blue Scales
a. What is the probability of having fish with red scales?
b. What is the probability of having fish with patchwork scales
P
R_
B_
BS
_R_
3. Two patchwork fish are crossed. What is the probability that they will have patchwork fish?
Answer:
c. Bb
2-a. 0%
2b. 50%
3. 50%
Explanation:
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Answer: I believe the answer would be 2
Explanation:
Which of the following is one of the reasons a sea breeze occurs during the day?
A
The land cools faster than the water.
B
The land cools slower than the water
С
The land warms faster than the water
D
The land warms slower than the water
Answer:
C
Explanation:
i took the test and it was on my study guide
Many organizations release indexes used to measure the development of the world's countries. As we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. In your opinion, what are the three most important factors we can use to determine how developed a country might be? Explain your answers in a few sentences. << Read Less
Answer:
The correct answer is - GDP nominal, human resources and right, and GDP per capita.
Explanation:
The three major and most reliable factors about determining the development of a country out of all the indexes are GDP nominal, the human rights index, and the GDP per capita.
The economy and production of a country can be shown by the GDP nominal if it is showing progress or declines.
The Average income of the citizen of the country is exhibited by GDP per capita to examine if the wealth of the country shares that gives an idea about rich, poor or the middle class.
The human rights index defines the basics of life expectancy and the rights they have that decides the happiness.
Which of the following is true of biogeochemical cycles?
Choose 1 answers
They ensure that nutrients are only used once by organisms.
They increase the total amount of matter over time.
They can be affected by human activity,
They create new atoms to replace lost ones.
Answer: They can be affected by human activity.
Explanation:
Answer:
a
Explanation:
i got it right
Why should organisms that produce more offspring have a more likely chance of survival?
Answer:Organisms must struggle to get what they need to survive, competing against other organisms that want the same things they do.
Explanation:
Answer:
I will try to put this in the simplest terms I can:
If you think about it, organisms actually do not live that long. There are multiple cause and effect reasons, such as low resources, no food, extinction, and so on. Thus, organisms must produce offspring to keep their "family line" consistent.
How does wind affect the amount of rain?
Answer:
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Explanation:
The rainfall loss rate increases as the wind speed increases and/or the rainfall intensity decreases.
If given the template strand of DNA below, what is the complementary sequence? 5’ A T G T A T G C C A A T G C A 3’
It would be T A C A T A C G G T T C G T
The ______ system helps us to break down our food.
A. digestive
B. muscular
C. circulatory
Answer:
A. digestive
Explanation:
Even if you chew the food, sometimes the food isn't break down properly. The digestive system would help break down food into tiny pieces.
Hope this helps, thank you :) !!
Sperm cells swim through liquid. Explain how a sperm cell is adapted to reduce friction as it swims.
Answer:
Long tail and narrow head.
Explanation:
A sperm cell is adapted to reduce friction as it swims by having long head, narrow tail and enzymes. These features of sperm provides ability to swim straight to the egg cell. Long tail helps the sperm cell to swim towards the egg cell, narrow head of sperm cell make the sperm cell for faster swimming towards the egg cell and enzymes present in the head of the sperm helps break through the egg cell membrane so we can say that the long tail and narrow head of sperm cells helps in faster swimming.
A cup is surrounded by air in room temperature
Describe the energy transfer between the water and air if the system is at equilibrium
A.Energy is transfers from air to the water
B. Energy transfers from water to the air
C. Energy transfers back and forth between air and water
D.None of the above
The energy transfer between the water and air if the system is at equilibrium does not carry any transfer of energy. So, the correct option is D.
What do you mean by Equilibrium state?Equilibrium may be defined as a condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs.
When the system is at equilibrium, the energy transfer between water and air surrounding the cup does not take place. It will only take place when there is a difference between the concentration of two solutions or objects.
Therefore, the energy transfer between the water and air if the system is at equilibrium does not carry any transfer of energy.
To learn more about Energy transfer, refer to the link:
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Complete the sentence below by selecting the correct words from the drop-down menus.
Factors that affect natural selection include VARIATIONS or SIMILARITIES, UNDERPOPULATION or OVERPOPULATION, and ADAPTION or EXTINCTION.
Answer:
variation, overpopulation, and adaptation
Explanation:
those are the answers for edge
Answer:
Complete the sentence below by selecting the correct words from the drop-down menus.
Factors that affect natural selection include
✔ variation
,
✔ overpopulation
, and
✔ adaptation
.
Explanation:
Answer the following questions:
⦁ What is the purpose/function of the Respiratory System?
⦁ What is the purpose of the tiny hairs called cilia in your nose?
⦁ What are the purposes of the pharynx?
⦁ What is the purpose of the epiglottis?
⦁ How is the respiratory system linked to the cardiovascular system
Answer:
1. The respiratory system allows us to breathe . They bring oxygen into our body and remove carbon dioxide from the body .
2. Tiny hairs called cilia protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.
3. The throat (pharynx and larynx) is a ring-like muscular tube that acts as the passageway for air, food and liquid. It is located behind the nose and mouth and connects the mouth (oral cavity) and nose to the breathing passages (trachea [windpipe] and lungs) and the esophagus (eating tube).
4. The main function of the epiglottis is to seal off the windpipe during eating, so that food is not accidentally inhaled.
5. The heart pumps blood to the lungs for oxygenation and the lungs then give the heart back oxygen rich blood to be transmitted to the whole body
Explanation:
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What process can change all three rock types in a new metamorphic rock?
Answer:
The three main rock types are igneous, metamorphic, and sedimentary. The three processes that change one rock to another are crystallization, metamorphism, and erosion and sedimentation. Any rock can transform into any other rock by passing through one or more of these processes. This creates the rock cycle.
Explanation:
In what way(s) do we use energy?
A.All answers are correct
B.To make heat
C.To transport ourselves and products
D.To make electricity
Answer:
A. All answers are correct
Shaniah has a very high-pitched voice, If she was examined, what would she be
found to have?
she might have vocal chord paralysis or vocal chord nodules/polyps. it might also be vocal chords being stretched too much and puberty.
Answer:
It would be almost certainly that she has shorter vocal cords
Explanation:
Shorter vocal cords vibrate more quickly in comparison to longer vocal cords, causing a more higher pitched voice.
See also: Higher and lower octaves.
If the blockage is removed from the blood vessel, what will happen to blood flow after removal?
Answer:
the blood would stop pumping, because the blockage allows the blood to move one way, but when there is not blockage, the blood would enter from both ways making it impossible to regulate
what is the probability for a child to inherit one of two alleles from her dad??
a:100%
b: 50%
c: 0%
d: impossible to know
Answer:
100%
Explanation:
a child will get one allele from her mom and one from her dad.
Answer:
50%
Explanation:
the probability for a child to inherit one of two alleles from her dad is 50 persent.
What type of blood vessels returns blood to the heart?
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Answer:
The blood vessels that returns blood to the heart is the superior and inferior vena cave,along with the aorta,are the great vessel's involved in systemic circulation.