A student performed a lab investigation to determine the effect of temperature on the heart rate of a water flea. What is the independent variable in the investigation? * o specie of flea O temperature O heart rate N O size of flea answer​

Answers

Answer 1

Answer:

B. Temperature

Explanation:

The heart rate depends on the temperature so the heart rate is dependant and the one that changes is independant


Related Questions

what is a balanced equation for the process of photosynthesis ?

Answers

Glucose + oxygen. 6CO2 + 6H2O → C6H12O6 + 6O2.

An amino acid is to protein as a(n) _______ is to a nucleic acid. proton nucleotide nitrogen base monosaccharide

Answers

The answer is monomer

Prompt
Explain how scientific theories differ from scientific laws.

Answers

Answer:

Some scientists will tell you that the difference between them is that a law describes what nature does under certain conditions, and will predict what will happen as long as those conditions are met. A theory explains how nature works.

What is a group of tissues called?

Answers

Answer: An organ System

Explanation:

What happens to the chromosomes during interphase?

Answers

Answer:

The cell develops during interphase, and the nuclear DNA is duplicated.

I hope this helps :)

cell develop and the DNA is doubled

Please answer the following questions. ✨WHEN I CAN I WILL MARK BRILLIANT✨


_____ is the study of the relationships and interaction of living things with their environment.


An ______ consist of all the living and nonliving things that interactwith one another within a given area.


A _____ is made up of all the living organisms in an ecosystem.

Answers

Answer:

1)Ecology

2)Environment

3)Ecosystem

Explanation:

Who is the first discovered plants were made of cells?​

Answers

Answer: PLEASE MARK ME AS BRAINLIST

Explanation:

The cell was first discovered and named by Robert Hooke in 1665. He remarked that it looked strangely similar to cellula or small rooms which monks inhabited, thus deriving the name. However what Hooke actually saw was the dead cell walls of plant cells (cork) as it appeared under the microscope.

the German botanist Schleiden proposed that all plants are made up of plant cells. Thank you.

Answer:

Robert Hooke - 1965

Explanation:

description of anaphase 2​

Answers

What exactly happens in Anaphase II?

Centromeres separateSister chromatids turn into single chromosomesThe single chromosomes move to opposite sides of the cellTwo chromatids in every chromosome move to opposite sides of the spindle

Best of Luck!

What's wrong with this ecological pyramid?

Answers

Answer:

The sun has an arrow leading to the decomposer, the sun should be at the bottom of the pyramid

Explanation:

The sun is the ultimate source of energy that provides energy to the producers. The producers use the light energy to synthesize the chemical compound. The energy from the producers is transferred to the primary consumers and their energy is transferred to the next levels. The sun cannot be decomposed by decomposer so the arrow from the sun leading towards the decomposer is not right.

The main carbohydrates which we eat in our food is :

(1 Point)

Canesugar

Glucose

Cellulose

Starch

Answers

Answer:

starch which later converted into glucose

so answer is starch

Explanation:


Can someone help me please please help me please it’s today please


And show the work please please

Answers

The equation would be y2-y1/x2-x1, I know that’s not the answer but it’s the easiest formula to find the slope between 2 points!<3

Blood is an example of which type of mixture?

Answers

Answer:

Liquid Homogeneous Mixtures

Explanation: In the human body, blood plasma is an example of a homogeneous mixture. The colorless fluid holds blood cells in suspension.

Blood is an example of colloid

... Hope this will help....

Atoms connected by covalent bonds share a ionic compounds. b pairs of electrons. c carbon and oxygen. d hydrogen ions.

Answers

Answer:

B

Explanation:

Atoms connected by covalent bonds share electrons. Therefore, the correct answer is option B.

Extremely high ionization energies prevent some elements from accepting electrons, and extremely low electron affinities prevent some elements from accepting them. These elements' atoms frequently share their electrons with those of other elements or with other atoms of the same element in order for both atoms to achieve stability by forming an octet configuration in their respective valence shells. Covalent bonds are those associations that involve sharing electron pairs between entities of different or similar kinds.

Therefore, a pair of electrons is shared between atoms connected by a covalent bond. The correct answer is option b i.e. pairs of electrons.

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HELP!

Which statement correctly describes the relationship between elements and compounds?
O A. Compounds contain fixed ratios of different elements.
B. Elements contain fixed ratios of different compounds.
C. Compounds contain variable ratios of different elements.
D. Elements contain variable ratios of different compounds.

Answers

Answer:

A. Compounds contain fixed ratios of different elements.

Explanation:

Water always has this 2:1 ratio of hydrogen to oxygen. Like water, all compounds consist of a fixed ratio of elements. It doesn't matter how much or how little of a compound there is. It always has the same composition.

Every compound has fixed ratios of different elements. The correct option is A.

What is an element?

A substance that could not be converted into various components by any non-nuclear chemical process is referred to as an element.

Every compound has fixed ratios of different elements.

Thus, the correct option is A.

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7,351 round to nearest hundred

Answers

Answer:

7 400

Explanation:

7, 351

7 is the thousands

3 is the hundreds

5 is the tens

1 is the unit

to round of to the nearest hundred look at both the hundreds value and the tens value.

since the tens value is 5 , this means the hundreds value increases by 1.

therefore 3 turns into 4

7351 to the nearest hundred is 7400

3 to 4 examples of biological enzymes

Answers

Answer:

1.Lipases

2.Amylase

3.Maltase

4.Trypsin

Describe the functions of proteins in cell membrane.

Answers

Answer:

Membrane proteins can function as enzymes to speed up chemical reactions, act as receptors for specific molecules, or transport materials across the cell membrane. Carbohydrates, or sugars, are sometimes found attached to proteins or lipids on the outside of a cell membrane.

Can someone please help me?

Answers

Carbon sinks (the ocean is actually the largest carbon sink)

What is metabolism????

Answers

A chemical process that occurs when a living organism converts food to energy to run certain cellular processes. This is essential for an living organism in order to maintain life.

Answer:

Metabolism is a chemical processes that take place in an organism and are necessary for life.

Sorry this answer is so short, it is terribly late where I am. Have a great night, get a good rest, and I enjoy this answer. Bye!

Sample Response: When there is less rainfall, land,
which is part of the geosphere, becomes dry. When there
is not enough water, plants will not get the nutrients they
need from the soil and animals will not get enough water,
and they will die. Both plants and animals are part of the
biosphere. Less precipitation would also mean less water
in lakes and groundwater, parts of the hydrosphere, and
less evaporation. The atmosphere may also be affected
due to less water vapor.
Which ideas did you include in your answer? Check all
that apply.
Droughts can cause the geosphere to be very dry.
Droughts can affect the survival of organisms in the
biosphe.
Droughts can affect the amount of water in the
hydrosphere.
Droughts can affect the amount of water vapor in the
atmosphere.

Answers

Answer: there is no correct answer to this question i just took the test and the answer is whatever you want to answer

Explanation:

just took it on edg 2020

When there is less or no rain than expected it will lead to draughts.

Draughts:

When there is less rainfall all the parts and organisms of the earth get affected. Water is an essential component of life. Less rainfall leads to the scarcity of water on the earth.

Farmers will not get enough amount of water for farming, groundwater levels also get affected. Plant and animal life also gets affected, and this affects the survival of organisms.  Draughts can also affect the amount of water in the hydrosphere.

Food, fruits, and vegetables also get reduced because of less amount of rainfall. Therefore good rain is essential for the lives of the plants and animals. This is important for the survival and the good life of the organism.

Therefore, When there is less or no rain than expected it will lead to draughts.

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WILL MARK BRAINLIEST!!!1PLZ HELP!!!

Answers

A) gamma rays, ultraviolet waves, microwaves

Answer:

gamma rays, ultraviolet waves, microwaves

Explanation:

6. Which fossil type provides the most anatomical
information to paleontologists?

Answers

Answer:

amber

Explanation:

the amber completely preserves the specimen

The fossil type that provides the most anatomical information is amber

The measurement of the pressure gradient of two solutions that are separated by a selectively permeable membrane is called...

A. Osmolarity
B. Equilibrium
C. Homeostasis
D. Tonicty

Answers

I believe the answer is
D) Tonicity

The osmotic gradient, which is the concentration difference between two solutions on either side of a semipermeable membrane, is used to determine a particle's concentration in a solution. Thus, Option A is correct.

What is osmolarity of a solution?

Osmolarity, which is determined by the number of osmosis of a solute per liter of solution, is a gauge of solute concentration.

According to their relative osmolarity, solutions can be broadly characterized as hypertonic, hypotonic, or isotonic.

Osmolarity is important because cells cannot survive if their environment's osmolarity is significantly different from their own.

From a lower osmolarity to a greater osmolarity, water flows over a membrane. It switches from the diluted to the concentrated side, to put it another way.

Therefore, osmolarity  measurement of the pressure gradient of two solutions that are separated by a selectively permeable membrane.

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What is the process of sea floor spreading?

Answers

Answer:

(See Below)

Explanation:

[1] Magma comes out of the rift valley.

[2] Magma cools to rock and hardens.

[3] Rock is pushed away as new rock is formed at MOR (Mid Ocean Ridges)

[4] Oceanic crust and continental crust meet at the trench.

[5] Oceanic crust bends down under the continental crust.

[6] Gravity pulls rock towards mantle.

[7] Rock melts to mantle.

Explanation:

Sea floor spreading is a process that occurs at mid ocean ridges,where new oceanic crust is formed through volcanic activity and then gradually moves away from the reach.

A human-centered worldview states that humans, as the owners of Earth, can treat resources as
they see fit

true
false

Answers

The answer is true. True

What is most likely to happen if an individual restricts consumption of dietary fat to very low levels?

A. loss of hemoglobin from red blood cells
B. loos of insulation around vital organs
C. development of atherosclerosis
D. development of scurvy​

Answers

Answer:

The answer is B

Explanation:

Loss of insulation around vital organs

a) What isdefination of tissue fluid?​

Answers

Tissue fluid is a watery liquid that contains glucose, amino acids, fatty acids, salts and oxygen.

What is the negative control and positive control in a presumptive blood test?

Answers

Answer:

Test a known bloodstain as a positive control and a blank (filter paper) as a negative control (see interpretation of results to determine a positive and negative result).

C2H12O6 is a type of

Answers

Answer:

Glucose is form of carbohydrates. 6 atoms of carbon. 12 atom of hydrogen.

Explanation:

How can I read this correctly

Answers

I think the little ones are 25
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