7. Which of the following systems is NOT found in a flatworm:
a. Digestive system
b. Respiratory system
c. Nervous system
d. All of the above

Answers

Answer 1

Answer:

No. B

8 think so

I hope it helps ✌️

Answer 2

Explanation:

Parasitic flatworm do not have a digestive system because they don't digest there food. They just suck it when the upper gut muscles contract, suck it inside their body then gobble them up and then they're done sucking the nutrients from the food people eat.

Answer:

A. Digestive system


Related Questions

PLEASE HELP ME! I HAVE NO BRAIN CELLS.
Some minerals are evenly distributed around the planet, while other minerals are quite rare. Why are some minerals so rare and unevenly distributed?


A. Certain minerals form only under high heat and pressure that develop near volcanoes.

B. Certain minerals form only in Earth's crust, so they are difficult to locate.

C. Certain minerals form only in specific climates, and not all climates, are the same around the world.

D. Certain minerals form only in the extreme heat found at the bottom of lakes and rivers.

Please answer with an explanation THAT ISNT a browser answer you just copied pls

Answers

Answer:

A.

Explanation:

certain minerals form only under high heat and oressure that develop near volcano. That is why minerals vary among areas.

The option (C) is correct. Certain minerals form only in specific climates, and not all climates, are the same around the world.

What are minerals?

A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. Common minerals include quartz, feldspar, mica, amphibole, olivine, and calcite.

Moreover, the major minerals, which are used and stored in large quantities in the body, are calcium, chloride, magnesium, phosphorus, potassium, sodium, and sulfur. The trace minerals are just as vital to our health as the major minerals, but we don't need large amounts.

Therefore, economic minerals are used in a wide range of applications related to construction, manufacturing, agriculture and energy supply. Economic minerals include: Energy minerals used to produce electricity, fuel for transportation, heating for homes and offices and in the manufacture of plastics.

Learn more about minerals:

https://brainly.com/question/21321997

#SPJ2

What do we think is the most important factor for supporting life on Earth?

A) It has liquid water
B) It has a very thick atmosphere
C) It has wombats - the adorable Australian marsupial. VITAL to life on Earth.

Answers

100% has to be C clearly

Answer:

B

Explanation:

1. How is the property of compressibility of gases used in everyday life? Give an example.

Answers

Answer:

Compressibility is reducing the volume by increasing the pressure of a substance like liquid or gas. It is a physical characteristic of a substance especially gases.

Everyday life examples:

(1) LPG - These gas cylinders have compressed natural gas to liquid gas to store and use as fuels.

(2) Tubes of bicycles are filled by the pumps that compress the air.

(3) Carbonated soda filled with the help of compressing the carbon dioxide into the bottle.

4) oxygen bottles in medical institutes for helping the patient to breathe.

How does an organism get its physical characteristics?

Answers

Answer:

Characteristics are determined by factors that are passed from one parental generation to the next. 1) An individual's characteristics are determined by the factors that are passed from parent to child (genes). 2) Some alleles are dominant & others are recessive.

Explanation:

have a good day

I really need this ASAP! Thank you!

Answers

The first two are: 50% and 50%
The second two are: 87.5% and 12.5%

Answer:

1)  50% and 50%

2)87.5% and 12.5%

Explanation:

What happens to a population if the birth rates and death rates are equal?
population density increases.

population size decreases

population size stays the same

population dispersion shifts from random to clumped

Answers

Answer:

Population size decreases

HOT PHONI
MOMRON
PRODUNA
A
The old strand of DNA reads TACGAATAG. Enzyme B makes the
new RNA strand:
OUACGAAUAC
ATG CITATG
AUG CUU AUC
AUGGUUUAUC
QUESTION 14
1 points
Save Answer

Answers

Answer:

The correct answer would be - AUGCUUAUC

Explanation:

The new mRNA strands are made by the process called transcription that involves an enzyme that helps to copy a segment of DNA or gene to produce a new RNA strand that encodes for the protein. In this process, a new RNA strand copied the complementary to the sequence of DNA strand. It means adenosine is copied into its complementary form uracil in RNA, Thymin to adenosine, cytosine to guanine and guanine to cytosine.

Original strands: TACGAATAG

new RNA strand: AUGCUUAUC

WHAT IS THE DIFFERENCE BETWEEN ORES AND MINERALS?
A. A mineral is a non-living, solid substance that can be extracted from the ground. Ore is a type of mineral made up of metals.
B. An ore is non-living and solid with little value unless it occurs in large amounts, in which case it is a mineral.
C. A mineral is a valuable form of ore that can be extracted from the ground.
D. A mineral is a non-living, solid substance made of elements. Ore is a large deposit of one or more valuable minerals in the ground.

Answers

I’m going to go with D, I really hope it is right.

what are the uses of four chambers in heart?​

Answers

Answer:

An awnser i found was below

The heart has four chambers: two atria and two ventricles. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-poor blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.

Explanation:

hope this helps :)

Why do you think it is illegal (in most places) to have an abortion AFTER 12 weeks?

Answers

Answer:

Because God Said So

Explanation:

#JesusDoesn'tCareThough

Answer:

The embryo begins to develop further and at some point, will become a fetus (an organism that is able to survive without needing the mother.)

Explanation:

Before the first trimester, the embryo is not a living, breathing organism and doesn't have a biological sex yet. It cannot survive on its own, so it is therefore part of the mother.

What are new stars that are found in the spiral arms and formed from recycled dead star material known as?

population II stars

red dwarf stars

population I stars

brown dwarf stars

Answers

Answer:

population I stars.

Explanation:

A star is a giant astronomical or celestial object that is comprised of a luminous sphere of plasma, binded together by its own gravitational force.

It is typically made up of two (2) main hot gas, Hydrogen (H) and Helium (He).

The luminosity of a star can be defined as the total amount of light radiated by the star per second and it is measured in watts (w). Also, the apparent brightness of a star is a measure of the rate at which radiated energy from a star reaches an observer on Earth per square meter per second. The apparent brightness of a star is typically measured in watts per square meter.

Some of the examples of stars are; Canopus, Sun (closest to the Earth), Betelgeus, Antares, Vega etc.

New stars that are found in the spiral arms and formed from recycled dead star material are known as population I stars. Also, it comprises of association and clusters formed a million or billion years ago in the spiral arms of Milky Way galaxy.

A galaxy can be defined as a collection or group of many billions of stars and other planetary body which are existing independently.

Answer: population l stars

Explanation:

I need an example of natural solution! (ex: a giraffe with a long neck) and I need an explanation on how it has adapted to it’s environment please!!

Answers

It adapted to its environment by being able to reach very high spots in trees to get fruits. Also, they can walk in lakes without feeling they would drown. Lastly, they can fight other animals without getting too hurt due to the other not being able to reach up to them.

Sorry this is what I could basically think off

Sound travels through substances as energy is transferred from one particle to the next. The
diagrams represent the particles of three substances: air (gas), water (liquid), and steel (solid).
Which substance would sound travel through the fastest?

Answers

Answer:

The correct answer is A...........

Which sentence includes an example of alliteration?

A. The friends decided they would enter the race and win.
B. The feisty friends finished the race in record time.
C. The track coach said they had what it takes to be competitive runners.
D. The four girls trained for the relay for six months.

Answers

Answer:

B.

Explanation:

as "feisty" and "friends" both begin with the same sound - f.

hope it helps. :)

1. How many mating pairs are illustrated in Model 1:

Answers

Answer:

24

Explanation:

24 mating pairs are illustrated in Model 1 .

There are 12 mating pairs which are illustrated in model 1.

What is a Mating pair?

These are groups of organisms which are involved in reproduction over  

a period of time. Some animals choose their mating pairs depending in the

season in which they copulate and produce offsprings.

In the model 1 given, we have a total of 24 animals which are grouped into

12 mating pairs which is why it's the most appropriate choice.

Read more about Mating pair here https://brainly.com/question/1242912

Hydrogen is the lightest element in the periodic table. Hydrogen is a nonmetal gas and part of Group 1 because it very?

Answers

Hydrogen is in group 1 because it is very reactive and has one valence electron.

Hemostasis involves a complex chain of events, and any disorder that affects any individual clotting factor can disrupt the entire process. As a result, managing many clinical conditions involves controlling or manipulating the clotting process. Excessive coagulation can cause dangerous blood clot conditions such as the formation of an embolus and a thrombus. Inadequate coagulation is associated with disorders like hemophilia, an inherited disorder characterized by the inadequate production of clotting factors. About one person in 10,000 has hemophilia. What is the name of the formed element that is critical for initiating the formation of a blood clot

Answers

Answer:

Fibrin

Explanation:

The name of the element that is critical for initiating the formation of a blood clot is fibrin.

Fibrin is a fibrous, non-globular protein that is formed by the polymerization of fibrinogen as a result of the reaction with protease thrombin. The threads from fibrin form a network of fibers around the platelet plug at the area of damaged blood vessels in the process of injuries, thereby forming the initial clot.

Mitchell's family has the unusual trait of having an extra finger. Many members of his family were with an extra finger, which is a recessive trait. a family dinner, Mitchell's grandmother helped him sketch a pedigree of the family. Dark-shaded family members were born with an extra finger. No shading indicates people who do not have an extra finger. A question mari means it is unknown. Mitchell is #8 on the pedigree and grandmother is #2. Based on the pedigree what do you predict members number 12 number 11 and 13.

Answers

Answer:

b.

Explanation:because means same genes and the parents have the same genes

If half the K-40 of a rock has
decayed into Ar-40, how old is
the rock?

Answers

Answer:

20

Explanation:

40:2=20

i need this answer quick please thanks

Answers

Answer:

B!!!!!!!!!!!!!!!!!!!

the answer to number 4 is A.

the question above 4 is wrong, it is C.

if you need me to help with humber 5 please show the options.

The living organism found within an ecosystem

Answers

Answer:

The living organisms in an ecosystem can be divided into three categories: producers, consumers and decomposers. They are all important parts of an ecosystem. Producers are the green plants The third type of living organism in an ecosystem is the decomposers.

Explanation:

no

which kingdom consists of organisms that can be classified as either plants-like,fungi-like,or animal-like ?​

Answers

Answer:

Kingdom Protista

The organisms within the Kingdom Protista contain a nucleus, like all Eukaryotes, and are categorized as plant-like, animal-like or fungus-like.

How does the crossing-over of chromosomes that occurs during recombination result in increased genetic variability in population?
THIS IS A TEST ANSWER

Answers

Answer:

they swap alleles

Explanation:

when homologous chromosomes cross over during meiosis, they exchange segments of DNA/swap alleles. this means that the chromosomes now have a completely unique combination of alleles, which causes variation. It is also random which of these unique chromosomes end up in which daughter cell (the gametes) and since fertilisation is a random and independent event, which unique male gamete that fertilises which unique female gamete is also random. This means the resultant zygote has a unique combination of alleles that is unlike either of their parents.

The images show slices of sedimentary rock in Earth's surface in two different locations.
Slice from location 1
Slice from location 2






Which layer is most likely the oldest in location 1?
A
layer Q
B
layer R
C
layer s
D
layer T

Answers

Answer:

b

Explanation:

it is what it is.

Give an example of an adaptation found in three different plants or animals. Construct an explanation of how the adaptation helps each organism survive in its environment.

Answers

Answer:

race

species

restriction

correct me if I am not correct thank you

When a blood clot breaks free and blocks a vessel leading to the brain a _______________________ can happen.

Answers

Answer:

a stroke can happen

Explanation:

A stroke can happen, right?

Antibodies, B-cells, killer T-cells, and helper T-cells are all examples of what part of
the immune system?
Red blood cells
White blood cells
O Platelets
O Plasma

Answers

Answer:

b    whit blood cells

Explanation:

What must be true if prokaryotes evolved into eukaryotes by endosymbiosis

Answers

Answer:

The ability to absorb other cells gave some prokaryotes a survival advantage.

Explanation:

I’ll really appreciate it if you help me out with these 2 questions .

Answers

14. One method of decreasing the negative human impact on the environment is to?

Answer: c) Increase the use of renewable energy resources


15. Actions taken by human beings to reduce or repair damage to the environment include all of the following except

Answer: a) Increasing Industrialization

Which organelle is considered the control center of the cell or the "brain" of the cell? It contains all the DNA or the instructions to carry out the function of the cell.??

Answers

Answer:

Cell Nucleus

Explanation:

The nucleus is perhaps the most important structure inside animal and plant cells. It is the main control center for the cell and acts kind of like the cell's brain.

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