what would be a good hypothesis for does caffeine increase the heart rate of an earthworm

Answers

Answer 1

A hypothesis is usually an if then because statement, but the answer will differ as there may be multiple hypotheses to use for a single experiment.

If an earthworm had an intake of caffeine, then their heart rate would increase because it would happen the same for humans as well.


Related Questions

I need to submit this ASAP please help

State reason(s) why ash should or should not be used in making compost

Answers

Answer:

Fireplace ashes for compost can be used to help maintain the neutral condition of the compost. It can also add nutrients to the soil. Decomposing materials in the compost pile can become somewhat acidic and wood ash can help offset this, as it's more alkaline in nature.  But Adding too much ash to the pile can be detrimental to the makeup of the compost because of its alkalinity. Ashes tend to raise the soil pH, so you shouldn't use it directly on plants, especially acid-loving ones like rhododendrons, azaleas, and blueberries. Also, in high amounts, wood ash can inhibit plant growth by restricting nutrients, like iron.

Help please I need a. and b. For number 2

Answers

Answer:

they are both dominant

Explanation:

because of the capital P overrides tge lowercase p

Answer:

PP = purple and Pp = purple

Explanation:

Purple is dominant in both genotypes.

A recessive allele is expressed if there is no dominant allele present.
A) True B) False

Answers

Answer:

A) True

Explanation:

Physical characteristics include 3 pairs of legs and 3 body sections *
arachnids
insects
annelids
echinoderms

Answers

Answer:

The three main features of an arthropod's body are the _ or cuticle made of chitin; a series of paired, jointed _ , and segmented _ parts. A long organic molecule made of sugars, arranged in layers. Chitin.

Explanation:

Answer:

Which of the following equations are balanced correctly?

2Ag2O → 4Ag + O2

Zn + HCl → ZnCl2 + H2

Cu + H2O → CuO + H2

2C4H10 + 13O2 → 8CO2 + 10H2O

Explanation:

Which of the following ecological levels is correctly paired with its description?

A) Organism - all of the species living in a given area

B) Community - a group of one species living in a given area

C) Population - the regions on Earth that can support life

D) Ecosystem - all of the living and nonliving factors in an environment

E) Biosphere - anything that meets all of the characteristics of life

Answers

The correctly paired ecological level with its description is the option D. Ecosystem - all of the living and nonliving factors in an environment, among given options.

An ecosystem is a geographic region or area where all the living factors including animals, plants, bacteria, and others interact with all the physical or non-living factors such as landscape, humidity, water, and many more.

Other given ecological level and their description:

Organism - an organism is the living being that is the simplest form of ecological level composed of organ systems.Community - It is a population with similar characteristics that live in a particular area.Population -  a group of members of a particular species living and interbreeding within a given area.Organisms > Population > community > ecosystem

Thus, the correct answer would be option D.

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explain how the products of photosynthesis are stored leaves!​

Answers

Answer:

The products are stored in the form of starch because glucose is soluble

Explanation:

Answer:Although the cuticle provides important protection from excessive water loss, leaves cannot be impervious because they must also allow carbon dioxide in (to be used in photosynthesis), and oxygen out. These gases move into and out of the leaf through openings on the underside called stomata.

Explanation:

Helppp !
Mendel published his results in 1865, but the significance of his work was not
recognized at that time. What is one reason scientists were not excited about
Mendel's work at the time?
O
A. He did not have enough data.
O
B. His results were false.
O
C. He did not repeat his experiments.
O
D. His results conflicted with accepted theories.

Answers

the answer should be d

How do the cells and organs of the Skeletal and Muscular system work together?

Answers

Answer:

A tendon

Explanation:

Tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to attach the bone to muscle

Why do the cells inside of your stomach get replaced every few days , but other cells in your body can live for weeks, months or even years?

Answers

Answer:

hi, this is the answer of your question

the cells that line your stomach can renew as fast as every two days, because they in contact with digestive acid.

The blood disorder in which the blood doesn't clot properly is known as-


Hemophilia


Erythemia


Color blindness

Answers

The Answer is Hemophilia

The motion of an object can be described by its
OA. speed.
OB. position.
OC. direction
OD. all of these

Answers

Answer: the correct answer is d) all of these . here so the other person can get brainlest . have a good day/ night!!

Explanation:

The mechanism through which a parents gene is turned off, through the attachment of a methyl group to that parent's DNA is called :

A) methylation

B) mutation analysis.

C) cross contamination.

D) spermatogenesis or oogenesis.

Answers

Answer:

the answer is a methylation

Explanation:

Both rock and bodies of water are considered a type of
A) water
B) soil erosion
C) reservoirs
in cycles of matter. When rock is exposed for mining,
A) water
B) soil erosion
C) reservoirs
can readily transport nutrients from rock to aquatic
ecosystems. Runoff that carries excess nutrients can cause algae blooms.
The effects of
A) water
B) soil erosion
C) a reservoir
also increase water pollution and can
clog waterways.
Check

Answers

Answer:

c

a

b

Explanation:

Both rock and bodies of water are considered a type of reservoirs. Thus, option C is correct.

In cycles of matter when rock has been exposed for mining, the answer is water. Thus, option A is correct.

Can readily transport nutrients from rock to aquatic ecosystems. Runoff that carries excess nutrients can cause algae blooms.The effects of soil erosion. Thus, option B is correct.

What is soil erosion?

The removal of the top of the soil by water, wind and human activities has been called soil erosion. The reason due to which soil erosion takes [place is that trees should be planted in several rows to check the speed of the wind. This reduces soil erosion because of wind. Because the rivers cause soil pollution, dams are built in the upper course of the rivers to check soil erosion.

Soil erosion has happens when the dirt has been exposed to the high winds, heavy rains, and rushing water. In few circumstances, human activities, like farming and land clearance, expose soil to erosion. Soil erosion has been considered as the removal and transfer of the top layer of soil from its original location to another due to high winds and fast-running precipitation.

Therefore, Both rock and bodies of water are considered a type of reservoirs. Thus, option C is correct.

In cycles of matter when rock has been exposed for mining, the answer is water. Thus, option A is correct.

Can readily transport nutrients from rock to aquatic ecosystems. Runoff that carries excess nutrients can cause algae blooms.The effects of soil erosion. Thus, option B is correct.

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#SPJ2

Father
B b
Mother
B
b
BB
Bb
Bb
bb
B=dominant
b = recessive
The gene for brown hair (B) in Goats
Consider the possible genotypes of the offspring of two heterozygous brown goats. The ratio of brown to white
offspring in this case would be
A)
1:3.
B)
2:2
3:1
D)
3:4

Answers

Answer:

C. 3:1

Explanation:

Bb is still dominate because the bigger letter takes over the smaller letter.

Theres 3 dominate genes (Brown) and 1 recessive (White)

What two things make blood pressure? *

A. pressure caused by contraction of heart ventricle and pressure exerted on blood by
walls of blood vessels

B. pressure caused by contraction of heart atrium and pressure exerted on blood by walls of blood vessels

C. pressure caused by stressful workload and pressure exerted by teachers

D. pressure caused by contraction of heart ventricle and pressure due to gravity

Answers

Answer:

I think it's A, I am not sure

Explanation:

A newborn child was brought to the hospital nursery before he was marked with his parents' names. The hospital workers must use what they know
about genetic outcomes to determine whom the child belongs to. They use his traits to help them. The baby has freckles (F dominant), and attached
earlobes (I recessive). They believe that the baby most likely belongs to a couple in which the man has attached earlobes but no freckles. It is known that
the woman is heterozygous for freckles and earlobe type.
Complete the Punnett square below to determine the probability that the child belongs to this couple. List the possible combinations of the father's
alleles across the top and the possible combinations of the mother's alleles down the left side. Then write your answer in the space below. Include a
brief statement explaining how you reached your answer.

Answers

Answer:

Explanation:Which of the following equations are balanced correctly?

2Ag2O → 4Ag + O2

Zn + HCl → ZnCl2 + H2

Cu + H2O → CuO + H2

2C4H10 + 13O2 → 8CO2 + 10H2O

which statement would most likely be used to describe variation

Answers

Answer:

"Variations that decrease reproductive success are more likely to be passed on" is the one statement among the choices given in the question that would least likely be used to describe variation. The correct option among all the options that are given in the question is the second option or option "B".

Explanation:

Answer:

Variations that decrease reproductive success are more likely to be passed on" is the one statement among the choices given in the question that would least likely be used to describe variation

individuals joining a population is an example of

Answers

Immigration or migration

A cell phone discarded in the United States can cause a person processing it in China, India, or Africa to suffer negative consequences if it is not handled properly.

True Or False

Answers

Answer:

true

Explanation:

it is true

What are the different possible gametes for AABBDd?

Answers

Answer:

8

Explanation:

Diffrent types AaBbDd

What climate conditions occurs during el ninio

Answers

Answer: El Niño is a part of a routine climate pattern that occurs when sea surface temperatures in the tropical Pacific Ocean rise to above-normal levels for an extended period of time.

hope this helps !_!

ENJOY groovie DAY
Global climate La Niña impacts tend to be opposite those of El Niño impacts. During a La Niña year, winter temperatures are warmer than normal in the Southeast and cooler than normal in the Northwest.

To maintain a healthy diet, you should try to eat a diet rich in:
O green vegetables
2% milk
red meat
fruit juice

Answers

Answer:

I am not sure whether or not this is a statement or a question, but a healthy diet would consist of more diversity. You could live off of that and maintain a healthy body, but it would not be recommended.

Explanation:

Answer:

green vegetables

Explanation:

which example best describes how an X-ray machine works?
20 A QUESTIONS
O
Switching a flashlight on and off to transmit a message
0
Removing the batteries from a flashlight to keep a room dark
O Putting your hand in front of a flashlight beam to make a shadow
O
Shining a flashlight beam on a mirror to brighten a room
SUBMIT

Answers

Explanation:

putting hand in front of flash light

Answer: C

Explanation:

I just answered the question on a p e x


Which of these is true of fetal development by the end of the third trimester?
A. The placenta is absorbed by the uterus.

B. The fetus can survive outside the uterus.

c. All development is complete.

D. All growth is complete.

Answers

Answer:

B. The fetus can survive outside the uterus.

Explanation:

The third trimester starts in the wekk 28 (month 7 ) of fetal development and lasts until the birth pf baby, that is around week 40 (month 9) of pregnancy.

There are several changes occur in the thrid trimester of the fetal development such as hearing and visual has developed and the internal organs  including the heart, lungs, intestines and stomach has developed enough.

So, at the end of fetal development of the third trimester as all the body organs have grown and developed, a fetus can survive outside the uterus.

The correct option is B.

Answer:

Option B

Explanation:

During the third trimester, the fetus continues to grow in weight and size however the body systems finish maturing. In fact, both mother’s  body and the fetus continue to grow and change. Lungs, brain and kidneys keep maturing. Fetus position itself head-down and is 6 to 9 pounds in weight. Skull bones are soft but fetus become able to suck its thumb and cry. By 38 to 40 weeks, the lungs have matured fully . The end of third trimester marks the period when the fetus is ready for delivery. Hence option B is the correct answer

What organ receives oxygen First during each circulatory cycle

Answers

the heart, more specifically the right side of the heart i believe
The right side of the heart receives oxygen during each circulatory cycle where it takes in oxygen and gets rid of carbon dioxide.

How do limiting factors impact local ecosystems?



A)Limiting Factors prevent populations in ecosystems form growing any larger. If any of the limiting factors change, animal and plant populations change, too.


B)Limiting factors do not prevent populations in ecosystems from growing any larger. If any of the limiting factors change, animal and plant populations do not change, too.


C)Limiting factors can never impact ecosystems.


D)As biodiversity of an ecosystem increases, the ability to withstand environmental stress due to the loss of a single species or group also increases, improving the sustainability of the ecosystem.

Answers

Answer:

limiting factors like the availability of food, water, shelter and space can change animal and plant populations. Other limiting factors, like competition for resources, predation and disease can also impact populations. ... Sometimes a population will grow too large for the environment to support.

Explanation: a

Which of the following lists the order of taxonomic levels from the largest to the smallest group?
domain, kingdom, class, order, family, phylum, genus, species
species, genus, family, order, class, phylum, kingdom, domain
class, family, order, domain, kingdom, phylum, genus, species
domain, kingdom, phylum, class, order, family, genus, species

Answers

Answer:

domain, kingdom, phylum, class, order, family, genus, species

Explanation:

which is d on edge 2021 :)

Domain, kingdom, phylum, class, order, family, genus, species is the correct order of taxonomic levels from the largest to the smallest group.

What is taxonomy?

Taxonomy is a branch of science which deals with the classification of organisms on the basis of similarities and differences. It starts from domain and ends with species so we can say that domain, kingdom, phylum, class, order, family, genus, species is the correct order of taxonomic levels from the largest to the smallest group

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How can you decrease the effort force needed to push a weight to the top of the ramp? A) cover the surface with carpet B) increase the length of the ramp C) increase the height of the ramp D) decrease the length of the ramp

Answers

Answer:

B) increase the length of the ramp

Explanation:

Less force is needed to move the object over a longer distance.

Answer:

You can decrease the effort force needed to push a weight up the ramp if you increase the length of the ramp. You could also decrease the height of the ramp.Lengthen the ramp, decrease the mass of the object, use a machine  can you decrease the effort force needed to push a weight

Explanation:

A ramp is an example of an inclined plane. Think back to the example of the ramp and the moving truck. The ramp reduced the amount of force needed to lift the box by moving it over a greater distance. The longer an inclined plane, the less force is required to move an object upward.

What is the pathway of air into the body?

A. nose → nasal cavity → pharynx → trachea → larynx → bronchi → lungs
B. nose → nasal cavity → pharynx → larynx → trachea → lungs → bronchi
C. nose → nasal cavity → larynx → pharynx → trachea → bronchi → lungs
D. nose → nasal cavity → pharynx → larynx → trachea → bronchi → lungs

Answers

Answer:

D

Explanation:

Answer:

The answer is D

Explanation:

Which is a
multicellular organism:
an atom, a molecule, a
cell, or a Komodo
dragon?

Answers

Answer:

Komodo dragon.

Explanation:

Animals, plants, and fungi are multicellular organisms

Tha answer is 4.), a Komodo dragon.
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Which statements correctly describe Arizonas legislative branch? Check all that apply.The House is made up of 30 members.The Senate is made up of 30 members.The House has 16 standing committees.Bills passed by the House go directly to the Governor.Members are elected by Arizonas citizens. Vaughn Manufacturing expects to purchase $180000 of materials in July and $170000 of materials in August. Three-fourths of all purchases are paid for in the month of purchase, and the other one-fourth are paid for in the month following the month of purchase. How much will August's cash disbursements for materials purchases be? which bone layer holds calcium and other minerals Suppose a goat has a homozygous dominant individual (AA) is crossed with an individualthat is heterozygous for the same trait (Aa). What are the possible genotypes of the offspring, and what percentage of the offspring is likely to show the dominant phenotype? Choose a Religion in these list and tell me which is best to be in 1.) Catholicism2.) Islam3.)judaism4.)Hinduism5.) Buddhism6.) Atheism7.) Shia islam If x < 0 and y > 0, where is the point located Was the Soviet Union a real threat to The United States Find the exact value of T Image belowT= (tan(2z)+1)(2 cos(z)-1)/ y^ 2 -x^ 2 , where x = 9 , y = 41 and z = 30 degreesplease explain A triangle has side lengths 4.47 cm, 4 cm, and 4.47 cm. The angles measures are 64, 64, and 52. What type of triangle is this triangle? Acute isosceles obtuse scalene acute scalene obtuse isosceles plzhelpppppp pros only helppppppp me plzzzzzzzzzzz ill reporte you if you do bad qweshtones Plz help me with this question for 100 points What was the primary reason the admission of Missouri as a slave state was controversial?A.Group of answer choicesB.it upset the balance of free and slave statesC.it created sectionalismD.it abolished slaveryit exaggerated loyalty to one region of the country Match each term to its description. PLZ HELP 12+pointsTERMS:1) scalawags2) carpetbaggersDESCRIPTION:1) southerners who opposed secession and supported reconstrution2) northernes who sought opportunity in the south Is there more that you and your family could do to recycle? Can you come up with three (3) ideas to reuse some of the waste products in your home? Which statement best summarizes the main idea of the above passage from"An Indian Father's Plea"?A. Wind-Wolf learned much of what he learned from public school.B. Wind-Wolf has a different educational background than manyother children.O C. Wind-Wolf looks and acts differently than the other children in hisschool.D. Wind-Wolf will often answer questions at school using answershe learned from those in his tribe. You go out with a group of friends and notice that Tomasa is more sociable than Miguel. How would you say this in Spanish?Tomasa soy ms sociable que Miguel.Tomasa es ms sociable que Miguel.Tomasa es menos sociable que Miguel.Tomasa son ms sociable que Miguel. On 3/1/14 Fox Corp bought back 1,000 shares of their common stock for $15 per share. There were no shares in the treasury prior to that. On 5/23/14 they sold 200 of those shares for $17 each. On 6/19/14 they sold another 400 shares of those shares for $10 per share. Consider writing out all of your entries on scratch paper to assist you in answering questions 31 and 32. What will the remaining balance in the treasury stock account be after all of the above transactions have been recorded 7.6 cm3.7 cmFind the area of the parallelogram. Was the United States justified in its invasion of Cuba (i.e. the Bay of Pigs)? What U.S. valuesor policies do you think motivated this event? A balloon filled with air has a volume of 6.50 L, a pressure of 0.900 atm, and a temperature of 25.0oC. If it is left out overnight, during which the temperature decreases to 15.0oC and the pressure rises to 1.15 atm, what will the volume of the balloon be? What is the answer to this question?