you get 50 points if you can answer correctly please help
Which is the best description of a scientific theory?
A. a statement about how two different variables are related
B. a collection of laws that are explained the same way
c. an explanation of many observations and tested hypotheses
d. an accepted fact that has always been observed to be true

Answers

Answer 1

Answer:

c.an explanation of many observations and tested hypotheses

Explanation:

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Related Questions

Which of the following structures is unique to meiosis?
A) Spindle poles
B) Centrosomes
C) Spindle microtubules
D) Tetrads
E) Kinetochores

Answers

D, tetrads. This is when homologous chromosomes line up next to one another and crossing over can occur in prophase 1.

It’s D) sorry if it’s not the right one because I’m not 100% sure

cyber ethics and law are same in nature true or false

Answers

Answer:

True as a technonerd it is ive study it

Explanation:

when a cell is in anaphase what happens to the dna?

Answers

Answer:

During anaphase, each pair of chromosomes is separated into two identical, independent chromosomes. The chromosomes are separated by a structure called the mitotic spindle.Explanation:

explain the effect of germination on pea seed respiration

Answers

Answer:

"The affect of germination on the rate of cell respiration in peas is that in peas that are germinated, the rate of cell respiration is higher because the cells are growing/going through mitosis which requires energy/ATP in order to be carried out which is generated through the process of cellular respiration."

(Biology Cell Respiration Lab Flashcards | Quizlet)

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Describe solar energy:

Answers

Answer: the light and heat that come from the sun

Explanation:

That’s it lol

3. Name the division of the peripheral nervous system that is activated in each of these
examples:

a. You are startled when a friend pulls a practical joke and spooks you with a loud sound.

b. You move your arms and legs to take an evening walk.

c. Your stomach makes a gurgling sound as it digests your lunch.

d. Feeling a little stressed? You take a few breaths to calm down.

e. You are at the line, waiting for you race to start, and your heart begins to pound.

Answers

A startle reflex (a), digestion (c), breathing (d) and heart pumping (e) are responses of the ANS, while arm/leg movement (b) is a response of the SNS. They are major divisions of the PNS.

The peripheral nervous system (PNS) serves to connect the central nervous system to different organs, limbs, and skin.

The PNS can be divided into Somatic Nervous System (SNS) and Autonomic Nervous System (ANS).

The Somatic Nervous System is responsible for controlling the voluntary movements of the body.

The Somatic Nervous System is responsible for regulating the involuntary movements (reflexes) of the body.

Learn more about the peripheral nervous system here:

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How does energy flow in an ecosystem

Answers

Answer:

Energy is passed from organisms at one trophic level or energy level to organisms in the next trophic level. Producers are always the first trophic level, herbivores the second, the carnivores that eat herbivores the third, and so on.

Hope this helps you !!

What is the name of the column of neurons within the medulla that initiates neural impulses for inspiration and expiration

Answers

The ventral respiratory group (VRG)

Which of the following is a method used to prevent soil depletion? (2 points)
Dune fences
Contour farming
Adding fertilizers
Planting grasses on slopes

Answers

Answer: The answer is B

Energy flow in an ecosystem is best represented by _______.

Answers

Answer: Pyramids of biomass
Pyramids of biomass display the weight of organisms at each level. Inverted pyramids of biomass can occur when the primary producer has a high turnover rate. Pyramids of energy are usually upright and are the best representation of energy flow and ecosystem structure.
Your question: Energy flow in an ecosystem is best represented by _______.

Chlorophyll creates___
and recycle oxygen.

Answers

Answer:

sugary carbohydrates

Explanation:

Chlorophyll captures the sun's rays and creates sugary carbohydrates or energy during photosynthesis which allows the plant to grow.

bennett is a 12-year-old boy whose bmi-for-age falls at the 90th percentile on the bmi-for-age growth chart. bennett is

Answers

Answer:

bennett is a 12-year-old boy whose bmi-for-age falls at the 90th percentile on the bmi-for-age growth chart. bennett is

Explanation:

bennett is a 12-year-old boy whose bmi-for-age falls at the 90th percentile on the bmi-for-age growth chart. bennett is

Which ion/molecule in the saliva allows you to taste sugar as sweet? A. Hydrogen ions B. Sodium ions C. Glucose D. Alkaloid molecules

Answers

Answer:

C. glucose

Explanation:

the presence of energy-rich carbohydrates, such as glucose, which increases the hedonic tone of food and strongly influences our eating behavior.

Glusose is the correct answer

in your opinion, do you believe globalization of the automobile industry is good for
the American Economy or does it pose a threat to the American Economy Explain
you answer

Answers

It can be deduced that the globalization of the automobile industry is beneficial to the American economy.

Globalization simply means the process by which businesses develop international influence or begin its operations on an international scale.

The globalization of the automotive industry is important as it led to ba increase in the number of vehicles that's were imported into the country.

Globalization gives more individuals personal freedom and access to jobs. This also led to the development of better roads and transportation.

Learn more about globalization on:

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During primary succession, an ecosystem cannot 're-build' with large trees and bushes. Explain.

Answers

I believe they cannot start with big trees and bushes because the there is not enough nutrients in the soil, so instead pioneer species pave the way for primary succession.

during the process of transcription in a eukaryote

Answers

mRNA is produced which caries the sequence to produce proteins

how are neurotransmitters and hormones similar and how are they different?

Answers

Answer:

Both neurotransmitters and hormones influence our thoughts and motivations, as well as our ability to learn and concentrate. However, neurotransmitters are short-lived while hormones act for longer periods of time.

Which is the most likely explanation for the change?

Answers

Answer:

a beetle population moved to a greener habitat.....

what is the potential energy of a 10kg object sitting on a 2.5m high cliff

Answers

Answer:

245.1663 Joules

Explanation:

Use the potential energy formula which is U=mgh

Where m=mass in Kg

g=gravitational acceleration: 9.80665 m/s^2

and h=height in meters

a zebra cell is just about to replicate its dna. what will happen first?

Answers

Answer:

The DNA unravels to make two strands.

I think this is the right answer

notice or perceive
e. Observe:
f. Infer:
g. Repetition:
h. Replication:
i. Data

Answers

Answer:

Try e. Observe for an answer

Describe an approach for understanding global systems and the changes they undergo

IN UR OWN WORDS

ill give brainliest if its in ur own words

50 points :)

Answers

Answer

To understand the global systems and the changes they undergo in a better way, we can use a model to represent the various ecological processes that occur within the biosphere. One example of a model that we can use is the earth systems model. It can show the causes and effects of global change to provide us with insights and learning about the global system as a whole.

Explanation:

Answer:

To be able to understand global systems and their changes first we must survey them before and relook at the systems and analyze how they have changed and what caused these changes.

Explanation:

What molecules diffuse through the cell membrane without the use of energy and are required as reactants in photosynthesis?

A.glucose and oxygen

B.water and oxygen

C.glucose and carbon dioxide

D.water and carbon dioxide

Answers

Answer:

Explanation:

If the substances can move across the cell membrane without the cell expending energy, the movement of molecules is called passive transport. Consider substances that can easily diffuse through the lipid bilayer of the cell membrane, such as the gases oxygen (O 2) and carbon dioxide (CO 2)

WIll GIVE BRAINLIEST!!!!

Answers

Answer:

Both A and B

Explanation:

This was on my test today and I got it correct.

Which cellular process would be affected first if the structure labeled 3 were
destroyed?

Answers

Answer:

Photosynthesis

Explanation:

asked my teacher

The voyage of the H.M.S Challenger was important because (1 point)
O it was a race won by Americans, to demonstrate superior sailing and ship building skills
O navigators were able to circumnavigate the globe for the first time in history, demonstrating celestial
navigation skills.
Ophysicists, chemists, and biologists conducted experiments and gathered collections that changed
exisisting scientific knowledge about the oceans.
O the first known data gathered about ocean currents and the Gulf Streams influence on weather were
documented by biologists and meteorologists.

Answers

Answer:

Physicists, chemists, and biologists, conducted experiments and gathered collections that changed exisisting scientific knowledge about the Oceans.

Explanation:

Trust in me

In __________ ribosomes can attach to the mRNA and begin translation even though transcription has not been completed.

Answers

Answer:

prokaryotes

Explanation:

All cells translate using ribosomes. Prokaryotic DNA lacks a nucleus, therefore translation happens before transcription. Simultaneous transcription and translation takes place.

What is translation in prokaryotes?

In all cells, translation takes place at ribosomes. Prokaryotes translate DNA before transcription is finished because their DNA is not bound by a nucleus. Both transcription and translation take place at once. When a start codon on mRNA attached to a small ribosomal subunit is recognized by an initiator tRNA anticodon, translation can start. A second tRNA is recruited as the big ribosomal subunit joins the tiny subunit.

This is not conceivable in eukaryotes because translation takes place in the cytoplasm outside of the nucleus, whilst transcription takes place in a membrane-bound nucleus.

Learn more about translation, here:

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What is the average beak depth of the current finch population?

Answers

What is the average beak depth of the current finch population?

Answer: The most common beak depth of the initial population (red bars) was 8.8 mm. A very small proportion of individuals with this beak depth survived the drought. More than half of the initial finch population died during the drought. The most common beak depth of the surviving population (black bars) was 10.3 mm.

what allows a viral disease to be incurable?

Answers

Answer:

Antiviral drugs are only effective on a few viral diseases, such as influenza.

Explanation:

What are the states of energy? List the Laws of Thermodynamics.

Answers

Answer:

The laws of thermodynamics define a group of physical quantities, such as temperature, energy, and entropy, that characterize thermodynamic systems in thermodynamic equilibrium.

Explanation:

What are the states of energy? List the Laws of Thermodynamics.
Answer: The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system. The second law of thermodynamics states that the entropy of any isolated system always increases.

Paragraph: Discuss the three laws of thermodynamics.
Key Points

The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system.
The second law of thermodynamics states that the entropy of any isolated system always increases.
The third law of thermodynamics states that the entropy of a system approaches a constant value as the temperature approaches absolute zero.
Terms

absolute zeroThe lowest temperature that is theoretically possible.
entropyA thermodynamic property that is the measure of a system’s thermal energy per unit of temperature that is unavailable for doing useful work.

System or Surroundings

In order to avoid confusion, scientists discuss thermodynamic values in reference to a system and its surroundings. Everything that is not a part of the system constitutes its surroundings. The system and surroundings are separated by a boundary. For example, if the system is one mole of a gas in a container, then the boundary is simply the inner wall of the container itself. Everything outside of the boundary is considered the surroundings, which would include the container itself.

The boundary must be clearly defined, so one can clearly say whether a given part of the world is in the system or in the surroundings. If matter is not able to pass across the boundary, then the system is said to be closed; otherwise, it is open. A closed system may still exchange energy with the surroundings unless the system is an isolated one, in which case neither matter nor energy can pass across the boundary.

A Thermodynamic SystemA diagram of a thermodynamic system
The First Law of Thermodynamics

The first law of thermodynamics, also known as Law of Conservation of Energy, states that energy can neither be created nor destroyed; energy can only be transferred or changed from one form to another. For example, turning on a light would seem to produce energy; however, it is electrical energy that is converted.

A way of expressing the first law of thermodynamics is that any change in the internal energy (∆E) of a system is given by the sum of the heat (q) that flows across its boundaries and the work (w) done on the system by the surroundings:

Δ
E
=
q
+
w
Δ
E
=
q
+
w

This law says that there are two kinds of processes, heat and work, that can lead to a change in the internal energy of a system. Since both heat and work can be measured and quantified, this is the same as saying that any change in the energy of a system must result in a corresponding change in the energy of the surroundings outside the system. In other words, energy cannot be created or destroyed. If heat flows into a system or the surroundings do work on it, the internal energy increases and the sign of q and w are positive. Conversely, heat flow out of the system or work done by the system (on the surroundings) will be at the expense of the internal energy, and q and w will therefore be negative.

The Second Law of Thermodynamics

The second law of thermodynamics says that the entropy of any isolated system always increases. Isolated systems spontaneously evolve towards thermal equilibrium—the state of maximum entropy of the system. More simply put: the entropy of the universe (the ultimate isolated system) only increases and never decreases.

A simple way to think of the second law of thermodynamics is that a room, if not cleaned and tidied, will invariably become more messy and disorderly with time – regardless of how careful one is to keep it clean. When the room is cleaned, its entropy decreases, but the effort to clean it has resulted in an increase in entropy outside the room that exceeds the entropy lost.

The Third Law of Thermodynamics

The third law of thermodynamics states that the entropy of a system approaches a constant value as the temperature approaches absolute zero. The entropy of a system at absolute zero is typically zero, and in all cases is determined only by the number of different ground states it has. Specifically, the entropy of a pure crystalline substance (perfect order) at absolute zero temperature is zero. This statement holds true if the perfect crystal has only one state with minimum energy.

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