How many variables can a scientist change during a scientific investigation?

Answers

Answer 1

Answer:

Three

Explanation:


Related Questions

Which of the following is a biotic factor in an ecosystem?
a. Tree leaves
b. Wind
c. Small rocks
d. Light from the sun

Answers

Answer:

tree leaves

Explanation:

chains of amino acids make ____ which can fold to make a ____
PLEASE HELO BEFORE MY 6th HOUR!!!

Answers

Answer:

Chains of amino acids make Proteins which fold to make a complex three dimensional shape.

3. What effect does hydrostatic equilibrium have on a solar system body?
It gives the body's orbit a circular shape.
It gives the body's orbit a clear path.
It gives the body a potato-like shape.
It gives the body a spherical shape.

Answers

Answer:

it's option d) It gives the body a spherical shape.

The effect of hydrostatic equilibrium on a solar system body is that It gives the body a spherical shape.

What is hydrostatic equilibrium?

Hydrostatic equilibrium describes liquid or fluid at rest.

A body of solar system such as Earth has a spherical shape which is not perfect. This spherical shape of Earth and other bodies of the solar system such as;

Mars, Venus, Jupiter, Uranus etc are caused by the hydrostatic equilibrium.

Thus, we can conclude that, the effect of hydrostatic equilibrium on a solar system body is that It gives the body a spherical shape.

Learn more about hydrostatic equilibrium here: https://brainly.com/question/2176044

what are the primary consumers in the Arctic food web?

Answers

Answer:

Humans (notice how many arrows go towards the humans, and how there are no predators of humans).

Explanation:

Humans, polar bears, and killer whales

Write about Cryptogams and Phanerogams​

Answers

Explanation:

Cryptogams: Thallophytes, Bryophytes and Pteridophytes are called Cryptogams.Cryptogamae means having hidden reproductive organs.The reproductive organs in these plants are inconspicuous. Their naked embryos are called spores.Phanerogams: Gymnosperms and Angiosperms are Phanerogams.Phanerogams are the plants with well differentiated reproductive tissues. The seeds enclose embryo which is suspended in the stored food.

-TheUnknownScientist 72

a group of unicellular organisms that live together but have on relationship to one another

Answers

Colonial species are together

The group of unicellular organisms that live together but have no relation to one another is called colonial organisms.

What are colonial organisms?

The organization of cells leads to their efficiency. The organization of cells leads to the formation of tissues and organs which leads to the efficient functioning of an organism.

The organization of cells is not only seen in the multicellular level of organization. It starts from the organization of molecules to form structures like proteins and nucleic acid.

Unicellular organisms are able to live and survive independently and perform all life processes necessary for their own survival. But, bacteria are often found to live together in colonies.

A colony is a group of individual organisms that live close to each other. They live together because they are stronger in a colony. A colony of bacteria can protect themselves, acquire their nutrition or attack a host in a better way.

Therefore, a group of organisms who live close to each other and have no relationship is called colonial organisms.

Read more about colonial organisms, here

https://brainly.com/question/2685264

#SPJ2

A student is investigating the process of osmosis. She fills a medicine dropper with red
blood cells. Next, she creates a saline solution that is isotonic to the red blood cells.What will most likely happen to the red blood cells after they are placed in the
solution?
A. Water will exit the cells and cause them to shrink in size.
B. Water will enter the cells and cause them to grow in size.
C. Water will neither enter or exit the cells and their sizes will remain the same.
D. Water will enter and exit the cells at a steady rate and their sizes will remain
the same.

Answers

Answer: D. Water will enter and exit the cells at a steady rate and their sizes will remain the same.

Explanation:

Osmosis occurs when the salt content is NOT the same as our red blood cells: the salt or lack of it causes our RBCs to swell or shrink. Isotonic fluid has the same salt content as our RBCs. This is why it's important to watch salt intake in congestive heart failure.

what allows a viral disease to be incurable?

Answers

Answer:

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

Explanation:

how long does better than bouillon last after opening

Answers

Since the ingredients include ground meat and vegetables, Better than Bouillon must be stored in the refrigerator. But don't worry that it will go bad quickly — it has about an 18-month shelf life from the time it's opened.

Do you think that the blue crab can survive out of water?

Answers

Answer:

Yes, but not for a long period of time

Explanation:

-> My answer comes from some quick research I did

        "Blue Crabs can last up to 24 hours out of the water as long as they are kept cool and moist." (crabbinghub.com)

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Answer:

Yes, but not for a long period of time

       "Blue Crabs can last up to 24 hours out of the water as long as they are kept cool and moist." plus they need to have enough water to stay outside Explanation:

Why does the stick immersed into water look bent? Explain with the ray diagram

Answers

Answer:

dhdhudhsusgiagwiwhw

Explanation:

Enter the following transactions into richard’s checkbook register and state his ending balance: date type description amount 03/01 check #204 blue sky apartments $455. 00 03/05 dep payroll automatic deposit $390. 36 03/08 debit benny’s hamburgers and fries $9. 20 03/15 check #205 car payment $251. 59 03/19 dep payroll automatic deposit $390. 36 a. $715. 79 b. $1,009. 81 c. $780. 72 d. $880. 24.

Which statement is true of line graphs?
a. They are used for numerical data.
b. Each point represents a data pair.
c. Data is displayed from least to greatest.
d. They are used for categorical data.

Answers

Answer:

b

Explanation:

you can graph to see an increase or decrease of data

Answer:

b

Explanation:

New cells are created from ______ ______.

Answers

Explanation:

New cells are created from existing cells through a process referred to as the cell cycle

if the atmosphere is like a greenhouse what is the glass?

Answers

Answer:

earth's atmosphere is like the glass in a greenhouse because sunlight streams through the atmosphere and heats the Earth. As the heat radiates up from the Earth's surface, some escapes into space. The rest of the heat is absorbed by gases in the troposphere and warms the air.

Explanation:

I hopes its help :)

In radish seeds, the roots grow in a downward direction, ensuring the plant is anchored in soil and has access to water and nutrients while the shoots grow in an upward direction ensuring the plant can absorb sunlight. How would the response by the roots and shoots be categorized? if someone can answer this id be happy <3

Answers

Answer:

I’m not smart for this but I could try

Explanation:

The way is that the roots absorb the water and store for the plant. This I know.

the shoots I don’t know much but I think the shoots help the roots with absorbing nutrients and stuff. I think they absorb the sunlight im sorry if this is not correct I’m not that smart..

proteins are responsibe for

A.) insulating the body
B.) Maintaining the structure of cells and tissue
C.) Storing energy from unused glucose molecules
D.) Holding the blueprints that code for all the cell's activities

Answers

Answer:

B.

Explanation:

Answer:

its a.

Explanation:

im learned protiens in biology like 4 weeks ago.

My cells have an organized nucleus. am usually made of many cells, but sometimes I can be single celled. I cannot make my own food, sol must eat. I can have one or two parents. Guess Who?​

Answers

Answer:

Animalia

Explanation:

Help plzz with biology USA test prep.

Answers

Answer:

i cant see it

Explanation:

The diagram shows structures that form the surface of the trachea.
Which level of organisation is the structure labelled S?
A. Cell
B. Organ C. Organ system
D. Tissue

Answers

A

Cell which is the structure that form surface of trachea

Answer:

which diagram

Explanation:

Which of the following relationships may present harm to one of the organisms involved? I. Commensalism II. Parasitism III. Predation IV. Mutualism *

Answers

Answer:

lll. Predation

I think this is right

HELPPP
Which of these is not associated with expiration?
A. high pressure

B. relaxed diaphragm

C. increased volume

both B and C answers

Answers

Answer:

(A)

Explanation:

High pressure has nothing to do with expiration(breathing out).

Hope it helps :)

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:

https://brainly.com/question/328696

Most of the energy from respiration is released in the _______.

Answers

Answer:

Mitochondria?

Sorry if it's incorrect. x

Is released in the Mitochondria

The area between the lungs, in the chest cavity, that contains the heart, aorta, trachea, esophagus, and bronchi is known as the

Answers

Answer:

The mediastinum

Explanation:

The mediastinum is a division of the thoracic cavity; it contains the heart, thymus gland, portions of the esophagus and trachea, and other structures.

One of the end products of cellular respiration is ATP, which is the molecule that cells use for energy. How is ATP produced during cellular respiration.

Answers

Answer:

The breaking down of glucose into energy (Which is ATP).

Explanation:

Answer:

36 ATP molecules are created from cellular respiration in eukaryotic cells

Explanation:

If a red blood cell is in a beaker of water. What are the areas of high and low water concentrations and does the water diffuse in or out of the cell

Answers

Red blood cells place in a solution with high water concentration compared to their content (eg pure water) will gain water by osmosis, swell up and burst. Water will diffuse from a water concentration outside the cell to a lower water concentration inside the cell. Hopes it helps you.

The ____________ is a muscular dome that forms the inferior boundary of the thorax, separating the thorax from the abdomen.

Answers

Answer: the answer is diaphragm


A baby carriage is sitting at the top of a 21 m high hill. It weighs 12 N. It has ________________ energy?

A - kinetic
B - Potential

Answers

Answer:

B- Potential

Explanation:

The object has the potential energy to be converted to kinetic energy if it starts to roll down the hill. But right now it has the potential for energy.

2
1 point
Which DNA strand below represents the complementary base sequence of a DNA strand represented by the sequence: 5-ATCGTA-3'
3-CATGAC-5
3-TAGCAT-5
ОООО
3-ATGCTA-5
3-GCATCG-5
ery

Answers

Answer:

WHY SO SERIOUS?

Explanation:

HAHAAHAHHAH

What is the genetic information that must be copied for the next generation of cells called?

A. Gametes
B. DNA
C. Meiosis
D. Mitosis

Answers

Answer:

B. DNA

Explanation:

DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person's body has the same DNA. The information in DNA is stored as a code made up of four chemical bases: adenine, guanine, cytosine, and thymine.

Other Questions
Find the surface area of the cuboid. The subsequent price and quantity of Rift pen is 19 and 20 respectively, while its initial price and quantity demanded is 20 and 16 respectively. A.Calculate the Price Elasticity(Ep) of Demand B. Is it Elastic or inelastic?why? Which excerpt best describes the way that Mrs. Jones's actions affected Roger in "Thank You M'am"?Question 16 options:"Mrs. Jones got up and went behind the screen. The woman did not watch the boy to see if he was going to run now, nor did she watch her purse which she left behind her on the day-bed.""When they were finished eating she got up and said, 'Now, here, take this ten dollars and buy yourself some blue suede shoes.'""She led him down the hall to the front door and opened it. 'Good-night! Behave yourself, boy!' she said, looking out into the street.""The boy wanted to say something else other than 'Thank you, m'am' to Mrs. Luella Bates Washington Jones, but he couldn't do so as he turned at the barren stoop and looked back at the large woman in the door." Can someone plz help me? :( Simplify Simplify 6 - 23 + (-9 + 5) 2. what is the primary action of antidiuretic hormone? 1. At the top of page 7, Scrooge says "It's not convenient, and it's not fair. What was hetalking about?2. What happens in Scrooge's room that alerts him to the unnatural presence in his house,and on what page did you find your answer?CHRISTMAS CAROL CHAPTER Which of the following factors may impact a persons bac. 1) Use the distributive property to write an expression that is equivalent to 8(a + 4).8(a + 4) = _a + _ Find all the missing angles. Please help ANSWER PLZZ NO LINKS PORFAHow many miles longer is Trail A than Trail B? The rights of the individual are protected through the ___ of the government.pls help! what one is it?structureprocessesgrowingabilitieswritingsCharge can be created or destroyed. the functions below show the amount of money bella and sweet t had saved after earning money for doing chores Solve the following equation 2x-17=-53 1. English is.all over the world the only two forces acting on a body have magnitudes of 20 n and 35 n and directions that differ by 80. the resulting acceleration has a magnitude of 20 m/s2. what is the mass of the body? Solve the inequality.D < -4 -5 Question 1 Which portion of the PuTTY package allows you to perform file transfers using the SCP (Secure Copy) protocol? ASAP HELP PLEASE SHOW ALL WORK AND PLEASE NO LINKS how much is 3 liters in 50 bottles