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.
Please answer me what’s the answer for this ?
Answer: Gene flow my man
Explanation:
I will give tons of points to the perfect answer. What is the meaning of life?
Answer: The meaning of life is multiple things.
Explanation: Experiencing things you've dreamed of figuring yourself out like if your part of LGBTQ+ and having a family finding love working towards retirement spending everyday with the person you love and giving a helping hand to those in need.
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Complete the following sentence.
The ability of an animal to produce offspring or food products is called its
Answer:
Fecundity should be correct
What determines the kind of genes an organism possesses?
1.
type of amino acids in the cells of the organism
2.
sequence of the subunits A, T, C, and G in the DNA of the organism
3.
size of simple sugar molecules in the organs of the organism
4.
shape of the protein molecules in the organelles of the organism
Su
Answer:
2.) sequence of the subunits in the base sequence of the DNA
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.
• Homologous structures show ____ _____ on a____ anatomical theme. These are seen in organisms that are____ related. Give an example of a homologous structure from this activity:____
Explanation:
Homologous structures show individual variations on a common anatomical theme. These are seen in organisms that are closely related. 1. Give an example of a homologous structure from this activity: Crocodile
⦁ Arrange these statements in the right order to describe process of inhalation.
____ Air is drawn into the lungs
____ Air pressure in the chest cavity decreases
____ Lungs expand
____ The diaphragm contracts and flattens
____ The muscles between the ribs contract to move the ribs up and out
Answer:
air is drawn into the lungs
lungs expand
the muscles between the ribs contract to move the ribs up and down
air pressure in the chest cavity decreases
the diaphragm contracts and flattens
Inhalation has been part of respiration. It includes drawing air into the lungs that expand the lung cavity by pulling the ribs leading to contracting the diaphragm followed by a decrease in lung pressure. Thus the correct order is 1, 3, 5, 4, and 2.
What is inhalation?Inhalation is the respiratory process to inhale oxygen inside the respiratory system for the cellular and respiratory processes. At first, the air is drawn into the lungs followed by expansion of the lungs.
This causes the ribs muscles to move up and down to accumulate the volume. This movement causes the diaphragm to flatten and contract which allows the oxygen to take place in the lungs that decreasing the air pressure in the cavity.
Therefore, the air is drawn inside the lungs in inhalation.
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Non communicable diseases are more dangerous than communicable diseases. give any four reasons.
They include age, gender, genetics, exposure to air pollution, and behaviors such as smoking, unhealthy diet and physical inactivity which can lead to hypertension and obesity, in turn leading to increased risk of many NCDs. Most NCDs are considered preventable because they are caused by modifiable risk factors.
What is the answer please?????
PLEASE HELPPP!!! I'll give brainliest!
Two atoms have the same number of protons but different numbers of neutrons. These atoms are:
A. electrons
B. isotopes
C. molecules
D. radiation
tysm!
Answer:
isotopes
Explanation:
If two atoms have different numbers of protons, they are different elements. However, if two atoms have the same number of protons, but different numbers of neutrons we refer to them as isotopes. Two terms we use to identify nuclides (isotopes) are atomic number and mass number.
describe how energy for the photosynthesis reaction is gained by plants (2)
please help
Answer:
Plzzzz answer fast......
The energy for the photosynthesis reaction is gained in the first stage of the reaction.
There are 2 stages in photosynthesis:
The light-dependent stageThe light-independent stageDuring the light-dependent stage, an electron in the molecules of chlorophyll gets excited and gets knocked off as a result of photon absorption. A molecule of water is split and the electrons released replace the one lost by the chlorophyll after traveling through the electron transport chain.
The energy from the traveling electron is used to reduce NADP+ to NADPH while the splitting of water to H and O means that a proton gradient is established between the stroma and the thylakoid lumen of the chloroplast. The electrochemical gradient thus created is used by ATP synthase to generate ATP from ADP.
The two chemicals, ATP and NADPH, are then utilized as energy sources for the light-independent reaction.
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Can u plz tell me five facts about the primary succession
Answer:
Primary succession begins in barren areas, such as on bare rock exposed by a retreating glacier.
Explanation:
What other traits are highly variable like human skin color ?
Which of the following is a subsurface event that takes place during the rock cycle? (4 points)
a
Deposition
b
Erosion
c
Weathering
d
Plate tectonics
Answer: Plates tectioncs
HOPE THIS HELPS
Answer:
Options D) is correct
Plate tectonics is a scientific theory that explains how major landforms are created as a result of Earth's subterranean movements.
Explanation:
Choose all the answers that apply. The hypothalamus _______
Answer:
A. The anterior pituitary is also known as the adenohypophysis.
C. The anterior pituitary is stimulated by the hypothalamus via hormones that travel through the hypophyseal portal system.
D. Oxytocin is secreted by the anterior pituitary.
Explanation:
can racial categories be determined by biological traits?
Water molecules have oppositely charged ends, + and -
These opposite charges allow for them to form covalent
bonds with other water molecules which is how water
droplets form. What is this called?
a) viscosity
b) polarity
c) density
d) surface tension
Answer:
polarity is the answer.
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PLZ, PLZ, PLZ HELP! NEED NOW!
Answer:
the plant is gaining minerals, sugars, and water
Explanation:
6. Which marrow was denser (had more mass in the given volume)? What impact would that have on the overall density of the bone?
Answer:
The beef bone marrow was denser than the chicken bone because it had more mass in the given volume. Since the chicken must fly, it cannot have its bones weighing it down on the land. However, cows must find grass on land and travel long distances. This would increase the overall density of the bone.
Explanation:
I finished this assignment last week and received 50/50 points! Trust me on this! :)
a person has type B blood. What are all the possible blood types of his parents?
Answer:
It could be A and O, AB and A, AB and O or A and B.
Hope this helps! :)
A person has type B blood the possible blood types of his parents can be A x B, A x AB, O x AB, B x AB, AB x AB, B x O, B x B.
What is blood types?The four main blood types are A, B, AB, and O. Your blood type is determined by the genes your parents gave you.
Red blood cells with blood group A antigens have anti-B plasma antibodies. Plasma from people with blood group B contains anti-A antibodies and B antigens.
Blood group O has both anti-A and anti-B antibodies in the plasma but no antigens. Both A and B antigens are present in blood group AB.
A person with type B blood may have parents who have the blood types A x B, A x AB, O x AB, B x AB, AB x AB, B x O, or B x B.
Thus, these are some of the possible blood types.
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Which statements describe the synapse? Select all that apply
It carries information through electrical impulses to the cell body
It is part of the neuron.
It ensures that information travels in one direction only.
It carries information through chemical impulses to the cell body,
It is the gap between neurons
It ensures that information travels in multiple directions
Answer:
It ensures that information travels in one direction only.
It is the gap between neurons.
Explanation:
It's correct
Answer:
Explanation:
It ensures that information travels in one direction only.
It is the gap between neurons.
I am a single-celled, prokaryotic organism that lives in the large intestines of mammals. I reproduce asexually by binary fission and can reproduce very quickly.
Answer: Kingdom:Eubacteria
organism name: kelp
Explanation: its kelp in the kingdom classification bacteria
Answer:
Escherichia coli.
Explanation:
Escherichia coli (E. coli) is a gram negative, rod shaped and facultative anaerobic bacterium that lives in large intestines of mammals. It is unicellular or single celled and prokaryotic organism. It reproduces asexually by binary fission.
It does not have nuclues or membrane bound organelbecause it is prokaryotic.
Therefore,
Escherichia coli lives inside large intestines of mammals.
determine the gender (male or female) and health of her unborn child.
Answer:
More examples?
Explanation:
Answer:
soo like what exactly do you mean
How did the formation of the ozone layer contribute to the existence of life on Earth?
Answer:
It blocked the suns harmful UV rays !
Hope this helps!
A new discovery is peer-reviewed by other scientists. The scientists asked many
questions about how the experiment was conducted. They were also curious about
whether the results were influenced by others. What were the scientists trying to
determine from their review?
Answer:
When scientists conduct an experiment and analyze the results, the next step is to write up a report that describes the experiment and the results and submit it for publication in a scientific or medical journal that is “peer reviewed.”
Invasive species are harmful not because of what they are, but because of
Answer:
What they do
Explanation: People put goldfish in lakes and creeks and ponds they invade the area and eat everything there and the animals that are there they take all the recorses that the other speices need
pasteurization is not required for which type of egg or egg product ?
How is the ocean biome and the tundra biome different with climate change?
3.2 State whether each of the phrases applies to A only, B only,
both A and B or none. Write down A only, B only, both A and B
or 'none' next to the question number.
For example, 3.2.6 None
3.2.1 Mitosis
A cloning
B chromosomes
3.2.2 Chromosome
A chromatid
B spindle fibre
3.2.3 Phases in the cell cycle
A interphase
B mitosis
3.2.4 Tumour
A benign
B malignant
3.2.5 Bone cancer
A carcinoma
B leukaemia
Answer:
3.2.1 Mitosis - Both A and B
3.2.2 Chromosome - Both A and B
3.2.3 Phases in the cell cycle - Both A and B
3.2.4 Tumor - Both A and B
3.2.5 Bone cancer - B only
Explanation:
1. Mitosis is a process of cell replication , in which one cell divides into two identical daughter cells having the same number of chromosomes. In mitosis, the two new cells are genetically identical. Copies of the chromosome (containing the DNA) are made and distributed equally to each cell. Some organisms such as bacteria reproduce entirely by mitosis.
In cloning, an organism that is genetically identical to another organism is made from that original organism. Cloning can occur naturally or may be done by man artificially. In nature, many organisms produce clones through asexual reproduction for example bacteria produces clones by mitotic binary fission.
Therefore, the phrase mitosis, applies to both A and B.
2. Chromosomes are structures found within the nucleus of cells that contain the genetic material of the organism. The chromosomes are composed two identical structures called chromatids thar are joined together to at a constricted point known as centromere.
During cell division, long fibres extend from the centroiles at the ends of the cell to the centromere of the nucleus in order to pull them apart. These long fibres are known as spindle fibres.
Therefore, the phrase, Chromosome, applies to both A and B
3. The phases in the cell cycle are divided into two major stages : interphase and Mitosis. In interphase, the cell grows and makes a copy of its DNA.
In mitotis, the cell DNA divides into two sets, the cytoplasm divides, forming two new cells.
Thus, phases of cell cycle applies to both A and B
4. Tumours are abnormal growths occurring in any part of the body which may be benign or malignant.
Benign tumours are harmless growth which do not have spread out to other tissues to form various cancers.
Malignant tumors spread out from their point of growth to other tissues leading to cancer in these other tissues and organs.
Therefore, tumors applies to both benign and malignant.
5. Bone cancer refers to abnormal growth of bone cells.
Carcinomas are cancers of the skin and tissue lining of organs.
Leukaemia are cancers affecting the bone marrow, whereby the bone marrow makes abnormal white blood cells, red blood cells and platelets.
Thus, bone cancer only applies to B.