A student wants to compare how long a flashlight will continue to shine using different brands of batteries. How can the student make sure that the test is fair?

Answers

Answer 1

Answer:

start with unused fresh out of the pack batteries

Answer 2

Answer:

THE TYPE OF FLASHLIGHT USED

Explanation:


Related Questions

Which labels would correctly model photosynthesis?

Answers

Answer:

A. Carbon dioxide

B. Light energy

C. Oxygen

D. Glucose

E. Water

Explanation:

The  model for photosynthesis is the sun in the form of solar energy where the carbon dioxide along with gets formed in  the leaves where it is kitchen  of the leaves along with the carbon dioxide gets removed out.

What is the primary source of energy ?

The primary source of energy is the sun which will help in the production of biomass.

A. Carbon dioxide

B. Solar energy

C. Oxygen

D. Stomata

The photosynthesis is the unit where the solar energy is the producers energy used by the producers. Carbon dioxide is the gas that is the used to the plants that is synthesizing plants food.

Leaves have the stomata where the food is being synthesized  where the chlorophyll containing pigment is helpful in making where the food is being synthesized.

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6) Choose 3 cells that are not round and
explain how the structure of this cell
helps perform its function.

Example #1:
Structure:
Function:

Example #2:
Structure:
Function

Example #3:
Structure:
Function:

Answers

Answer:

Red Blood Cells The red blood cells contain hemoglobin, which is responsible for the transport and delivery of oxygen to other body tissues.

Nerve Cells Nerve cells or neurons are responsible for carrying electrical signals to and from the brain and spinal cord.

Muscle Cells Muscle cells are responsible for contraction and relaxation so as to cause motion of body parts.

Explanation:

Where is the air pressure lower around an airplane wing?
1. under
2. above

Answers

Answer:

Above

Explanation:

If you are to look at a diagram, it is clear.

Answer:

2. Above

Explanation:

which product does the Krebs cycle require from the electron transport chain

ATP
CoA
NAD
NADH
pyruvate ​

Answers

NAD +molecule

Explanation:

Krebs cycle and electron transport chain are important steps in cellular respiration.

In the Krebs cycle, there is a need of NAD+ molecule which is then in Krebs cycle reduced to form a NADH2 molecule.

NADH2 is also an energy currency. It , giving electron in electron transport chain and return to Krebs cycle as NAD+.

Now in the Krebs cycle, it is ready to take electrons again.

Answer:

NAD+

Explanation:

HELPP PLS ASAP !
(EVIDENCE NOTEBOOK)

wildlife monitoring technology is an important of protecting our ecosystems and the populations that live within them. How do you think advancements in the kind of technology could help protect burrowing owl populations.

Answers

Answer:

Plant more trees in areas that don’t have enough to make up for the loss of habitat. Also integrating large bird homes and sanctuaries around the power plants could help the owls settle back down in a semi-familiar environment.

Explanation:

Reduce threats to wildlife in the best remaining wilderness areas on Earth to keep their numbers stable or growing, to ensure sustainable fishing and hunting, and to settle disputes between people and wildlife.

What is the importance of wildlife monitoring technology?

We can ensure that widespread species remain widespread and that unusual, threatened, and endangered species continue to get protection and aid thanks to data gathered through wildlife monitoring.

We may monitor pack dynamics, movements, ecological effects like feeding, mating, and nesting behaviors, illness outbreaks, snare incidents, and other human conflict issues through daily monitoring.

Therefore, We have a greater grasp of the occurrence, distribution, and status of animals in the preserves because of monitoring initiatives.

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Using the law of conservation of mass, what is the mass, in grams, of the product in the given reaction?

Reactant 1 (35 grams)+ Reactant 2 (115 grams) →Product (? grams)

A. 80

B. 140

C. 150

D. 75

Answers

Answer:

The correct option is;

C. 150

Explanation:

By the law of conservation of mass we have that in a closed system, the mass of the items in the system can not be destroyed or created by a physical process or chemical reaction

In the given chemical reaction process we have;

Reactant 1 (35 grams) + Reactant 2 (115 grams) → Product = ((35 + 115) grams)

∴ Reactant 1 (35 grams) + Reactant 2 (115 grams) → Product (150 grams)

The mass of the product = 150 grams.

DNA will condense into

Answers

Answer: DNA condenses into chromosomes.

Explanation: Chromatin carefully packs these DNA molecules into stringy-looking structures called chromosomes. If the DNA molecules in cells were not snaked around histones, the molecules would be 6 feet long when placed end-to-end, according to the National Human Genome Research Institute.

Answer, dna will condense to

How is the health of a person important to a country? Select all that apply.
Countries with fewer healthy people have higher rates of disease.
Countries with more healthy people have higher rates of disease.
Countries with more healthy people have lower rates of disease.
Countries with fewer healthy people have lower rates of disease.

Answers

Answer:

A and C

Explanation:

Jamie notices some small objects floating at the bottom of a sample of pond water he collected. He is trying to decide if these objects are living. He drops a small amount of alcohol nearby, and the objects move in the opposite direction. What characteristic of living things is Jamie testing

Answers

Answer:

Irritability

Explanation:

Living things have been said to contain or possess certain characteristics that qualifies them to be "LIVING". These characteristics include; movement, respiration, growth, irritability, reproduction etc. The characteristics described in this question is IRRITABILITY.

IRRITABILITY is the ability of a living thing to respond to external or internal stimulus. In this case where Jamie drops a small amount of alcohol nearby a sample of pond water he collected, he notices that the small objects move towards the opposite side. This means that the objects are RESPONDING to a stimuli, which is the ALCOHOL in this case. Hence, irritability is the characteristics being tested.

Why did some people think that there was evidence of intelligent life on Mars?

Answers

Answer:

Recent missions to Mars haven't turned up definite proof of life, but some tantalizing possibilities have been uncovered.

Explanation: Water and ice caps if there's water there's life. but its not entirely true... because there isn't any life on mars... or so NASA says  National Aeronautics and Space Administration more like Never a straight answer.

Many people believed that there was evidence of intelligent life on Mars, because of the similarities of this planet to planet Earth and because there are indications that there was water on Mars.

Although it is currently known that there is no intelligent life on Mars, many researchers believe that this planet has been inhabited in the past.

There is some evidence that allows this speculation to be established. Among this evidence, scientists claim that:

Mars has some characteristics similar to planet Earth.Many rocks on Mars have organic molecules.There is evidence that the surface of Mars once had water about two thousand years ago.There is water at the poles of Mars.There are water flows on the planet's hot slopes that are resistant to freezing.

With this, we can see that, according to the evidence, it is not possible to affirm that there was already intelligent life on Mars, but that the planet has the possibility of having been populated by microorganisms.

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Mario and several friends spend a day at the beach. While watching the ocean waves crashing to shore, Mario wonders how much of the world's water is contained in different types of bodies of water such as oceans, lakes, and rivers. He decides to research the percentage of Earth's water found in different locations. Which does his research reveal?

Answers

Answer:

The ice caps located at both poles contain 30 percent of Earth’s water.

Explanation:

why is it important that the heart and lungs kept healthy

Answers

Essentially, when you breathe in the lung take in oxygen and pass it along to the bloodstream, which brings it to your bodies cells. In return it picks up carbon dioxide, which the lungs dispose of. Every time you breathe this process is happening. That is why it's crucial to keep your lungs healthy.

Based on the model, students can conclude all the following valid claims EXCEPT

Answers

Answer:the nucleus carries a positive electrical charge

Thank you! have a good day.

PLEASE HELP ASAP

i will mark you brainiest if you get it correct for points!

Answers

The answer is A. All of them have similar properties

What is a substrate? A)the difference between a chemical reaction and an enzyme B)the place where an enzyme attaches itself C)It is a sticky molecule. D)the molecules that the enzyme sticks to in a chemical reaction E)a molecule that releases the energy in a chemical reaction

Answers

Answer:

D is correct answer...!

Explanation:

Enzyme binds with substrate to form ES complex.

E+S--->ES Complex--->E + P

Which product in photosynthesis is a waste product for the organisms that produce It? (2 points) OATP Oxygen OGlucose x Carbon dioxide​

Answers

Answer:

Oxygen

Explanation:

Organisms performing photosynthesis use sunlight and carbon dioxide to produce glucose, which is then turned into sugar. Oxygen is the waste product in the process.

Humans often invade spaces that were once isolated, such as beaches, affecting how animals produce offspring. Humans are overtaking the natural habitat of sea turtles, reducing the space where they deposit their eggs. Females will only deposit eggs on the land where they were hatched, and if that is taken from them they will never lay eggs. Which is NOT a step humans can take in helping sea turtles? A) Respect the areas that have been roped off for turtle eggs B) When turtle eggs are found, move them to a safe place C) When boating, try to avoid places where turtles swim and eat D) If found, do not disturb eggs or sea turtles that are laying eggs

Answers

Answer:

B) When turtle eggs are found, move them to a safe place.

Explanation:

Based on the given article, we can learn that human encroachment has decreased the private lands/ spaces for animals to reproduce properly. One such case is that of the sea turtles. As the females only "deposit eggs on the land where they were hatched", it is important to keep them safe and undisturbed.

Therefore, one step that isn't helping the turtles is to move the eggs to a safe place. This is because female sea turtles "will never lay eggs" if their eggs are ever taken away from the original place they were laid at.

Thus, the correct answer is option B.

Please help me... make sure the answer is correct... i need to send the out asap...​

Answers

Answer:

Renewable: Wind, forest, water, sun, natural gas

Non-renewable: Coal, soil

Can someone help me please?

Answers

The answer is 2 I think I’m not sure

Pasteur used tipped and untipped sterilized S-shaped flaks of broth in an attempt to​

Answers

Answer:

Show that life can only come from life (rather than spontaneous generation)

Explanation:

Pasteur boiled a broth in a flask with an S-shaped neck. Thebend in the neck prevented particles from the air reaching the broth, but still allowed air to get in.  No bacteria grew in the flask.  

When the flask neck was broken so that particles could get inside, the broth became cloudy, showing that microorganisms were only able to grow from other living things from the outside, and not spontaneously from nothing

sete are locomotary organs of
o Leech
Earthworm
• Nereis
syron-​

Answers

Answer:

Leech

hope this helps u

What are the similarities between food webs and food chains?
Explain.thanks

Answers

Explanation:

food webs are what the animals eat in order while food chain is what animal eats what animal

6
An antibiotic label says to take it for fourteen days. If we stop taking the medication after ten days, what would most likely
happen to the bacteria in our body?
A The bacteria causes the human immune system to stop producing antibodies to fight disease.
B A population of bacteria resistant to the antibiotic appears.
The strain of bacteria allows the human immune system to build up resistance.
The bacteria builds up a resistance to all types of antibiotics, turning into a "superbug".

Answers

i think the answer is A.

Once amylase has broken down starch, can it break down another starch molecule?

Answers

Answer:

Yes, amylase can be reused, and when fulfills its catalytic function, it is free to catalyze the breakdown of another starch molecule.

Explanation:

Amylase is an enzyme capable of catalyzing the breakdown of starch bonds, separating it into glucose molecules.

The enzymes, including amylase, have the property of being free and without structural alteration when catalyzing a reaction, to bind to the specific substrate and catalyze a new reaction.

Amylase is not consumed, unlike a reagent, so it can be reused in new reactions.

Which reason best explains why carbon is able to form macromolecules?
Carbon is a very large element.
Carbon can bond with many elements.
Carbon is found in all living things.
Carbon is found in energy-storing molecules.

Answers

Answer:

carbon can bond with many elements

Explanation:

i just did it

Answer:

B

Explanation:

EDG 2021

Smooth muscle, which is a tissue made up of a type of specialized muscle cell, functions in which process?​

Answers

A I’m pretty sure hope I helped

Answer:

A) Food digestion

Explanation:

Edge 2021

This food web represents a community in a rain forest.

If the beetles disappeared from this community, which changes would be
likely to occur? Select the three correct answers.

A. An increase in the number of strangler figs

B. A decrease in the population of sloths

C. A decrease in the number of boa constrictors

D. An increase in the population of fruit bats

E. A decrease in the population of poison dart frogs

Answers

Answer:

A, C, E

Explanation:

If the beetles disappeared from this community, changes likely to occur include

an increase in the number of strangler figs, an increase in the population of fruit bats and decrease in the population of poison dart frogs

The beetles are insects which eat up strangler figs and a decrease mean an increase in its number.

The population of fruit bats will increase as they will have more strangler figs available for food.

Poison dart frogs will decrease because they feed primarily on beetles in the ecosystem.

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why is it called the water cycle​

Answers

Answer: The water cycle is called the hydrologic cycle. In the hydrologic cycle, water from oceans, lakes, swamps, rivers, plants, and even you, can turn into water vapor. Water vapor condenses into millions of tiny droplets that form clouds. Clouds lose their water as rain or snow, which is called precipitation

hope it helps!!

Explanation:

Some tools have various levels of graduations. For example, a ruler may have graduations for both millimeters and centimeters. When measuring the length of an earthworm, which graduations would allow for the most accurate measurement?
millimeters
centimeters
decimeters
meters

Answers

Answer: A

Explanation:

I took the test

Millimeters allow for the most accurate measurement.

Is cm extra accurate than mm?

A paper clip may be measured with both units (millimeter or centimeter) but a millimeter is the greater appropriate size to get an accurate measurement.

Why are millimeters more specific?

A ruler marked in millimeters is extra unique than a ruler marked best in centimeters, considering a millimeter is a smaller unit than a centimeter.

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Diffusion movement is always (h->L/L->H)

Answers

There is a net movement of molecules from areas of high concentration to other areas. The average diffusion rate in a semi-solid like agar is around 50mm/h over the first net diffusion will always occur.

Hope this helps!!

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