mixing of pure and impure blood is prevented by what??​

Answers

Answer 1

Answer:The Pulmonary Valve

Explanation:


Related Questions

What else do you think plants may need to grow and go through their normal processes?

Answers

Plants need water, oxygen, soil, and solar energy.

Those are the only things that I believe plants need. They need water for food and Solar Energy (basically Vitamin D which you get from the sun) and soil to grow. Obviously they need oxygen to be able to survive.

-Ɽ3₮Ɽ0 Ⱬ3Ɽ0

describe in detail Alfred Wegener's idea of continental drift
HELPP

Answers

Answer:

Continental drift was a theory that explained how continents shift position on Earth's surface. Set forth in 1912 by Alfred Wegener, a geophysicist and meteorologist, continental drift also explained why look-alike animal and plant fossils, and similar rock formations, are found on different continents.

Explanation:

What is the MOST recent evidence supporting plate tectonics?
A) GPS monitoring of plate speeds and movements
B) the WWI discovery of paleomagnetic reversals
C) the 1963 mapping of the tectonic plate boundaries
D)C-14 dating of marine fossils found in the himalayas

Answers

A.) GPS monitoring of plate speeds and movements.

I know this is correct because it is constantly paying attention to what is going on with the tectonic plate, monitoring their movement every day, making it the most recent.

Hope this helps and have a nice day.

-R3TR0 Z3R0

The answer to your question would be A

Look at the species name for each alien. How do you think these names were chosen?

plz answer

Answers

Complete question:

You will find the complete question in the attached files

Answer:

1)

Alienus quadlegicus:  Mouth opened and no armsAlienus hairicus: Mouth opened, hairyAlienus tritoothicus: Mouth opened, not hairyAlienus stripicus: Mouth not opened, hornsAlienus bloblicus:  Mouth not opened, No legsAlienus fuzzicus: Mouth not opened, Legs

2) Genus Alienus

3) Morphological characteristics of aliens are used to identify them and to name them.

Explanation:

1) The dichotomous keys give you information about the groups that are being differentiated to correctly identify them. All you need to do is follow the description of the organisms and the numbers where each description drives you. If you observed correctly the organism, you will reach the scientific name, or genus, or any other taxonomic group you are looking for.

2) Taxonomy is the study of different organisms, their classification into categories according to their morphological and molecular characteristics and their evolutionary relationships. A binomial name is assigned to each organism, composed of a genus and the epithet.  

Among all the categories where organisms are classified, we can find the genus, which includes many species that share some common characteristics that are used to group them together.  

In this example, Alienus is the genus of all these aliens species.

3) Morphological characteristics of aliens are used to identify them and to name them.

Alienus quadlegicus:  Four-legged alienAlienus hairicus: Hairy alien.Alienus tritoothicus: Alien with three teethAlienus stripicus: Alien with striped hornsAlienus bloblicus:  Alien with no shape. Shapeless massAlienus fuzzicus: Short fine-haired alien.

Teens are more likely to become addicted to the nicotine in cigarettes than adults are. true or false

Answers

Answer:

Sadly it's true

Which of the following would show the Dominant Genotype? (Choose all that apply)

Answers

Answer:

all

Explanation:

Pesticides often do not just kill the target pest but also poison
inects in and
around the fields. These insects with the pesticides can be eaten by other animals and poison them.
Some pesticides are suspected of disrupting the
of wildlife and people. These
chemicals
because they are fat soluble and get passed up the food chain
by
Unlike pesticides, fertilizers are not directly toxic but their presence in
freshwater and marine areas alters the
system, and in consequence the species
composition of specific ecosystems. Their most dramatic effect is
resulting in an
explosive growth of algae due to
nutrients. This depletes the water of dissolved
oxygen, which in turn can kill fish and other aquatic life.

Answers

Answer:

Other problems of pesticide use include most pesticides kill beneficial species as well as the target pest species, pesticides do not stay put, pesticides harm wildlife, and pesticides can threaten human health. Farmers pay more and more for a pest control program that often becomes less and less effective.

Explanation:

MARK ME IF WRONG I M SORRY :)

How do plant and animal cells differ in relation to the need for energy and source of energy ?

Answers

Answer:

the plant cell needs the sun and water to keep the cells alive and the animal cell needs food and water also the animal cell goes through a lot of dead cells during the day so it is harder on the animal

Explanation:

In animal cells, the mitochondria produces the majority of the cells energy from food. Plant cells use sunlight as their energy source; the sunlight must be converted into energy in a process called photosynthesis. Chloroplasts are perform this function.
brainlist please

how is the hydrosphere connected to the lithosphere

Answers

Answer:

Water in the lake (hydrosphere) seeps into the cliff walls behind the dam, becoming groundwater (lithosphere), or evaporating into the air (atmosphere). Humans (biosphere) harness energy from the water (hydrosphere) by having it spin turbines (lithosphere) to produce electricity.

Explanation:

tanked

A.)
B.)
C.)
d

Answers

Answer:

A.)

Explanation:

The answer is A. I believe this is correct please inform me if it is correct or incorrect. Stay afriv

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

if the skeletal muscle cells in your leg are performing lactic acid fermentation to produce the necessary ATP for their proper functioning, decribe what is happening to the O2 gas you are breathing

Answers

Answer:

The O2 gas in uses in Aerobic Respiration and That O2 is performing that process to make ATP for your body and making glucose to function your body

Explanation:

Lactic Acid Fermentation is Anaerobic Respiration which doesn't Involve Oxygen

Sorry if I'm wrong

Hope this helps!

what vibrates as an electromagnetic wave passes by?

Answers

an electrically charged particle is your answer :)

(HELP ASAP I'LL GIVE YOU BRAINLIEST)
Willie is just starting out on his entrepreneurial journey and is looking for tools and resources to assist with structuring his business, researching the market, creating and registering his business name, and determining the right legal setup for taxes, licenses and permits. What government-based resource might Willie find helpful?

A.
Small Business Innovation Research (SBIR) Program

B.
Small Business Investment Company (SBIC) Program

C.
The U.S. Small Business Administration (SBA)

D.
GovLoans

Answers

I think A is the answer

Based on the information provided in the map, propose a way cholera may be transmitted.

Answers

Answer:

5

Explanation:

g

The six modes of disease transmission shown in the Model 2 are

1. Airborne

What is airborne?

The Airborne transmission can be caused by coughing, sneezing where

water droplets carry the disease causing organisms.

Example: flu, tuberculosis, etc.,

2. Food borne or waterborne

The pathogen is transmitted by the consumption of contaminated

food or water

Eg: cholera, botunilsm, etc.,

3. Vector

The vector such as insects or animals can act as vectors by carrying disease causing malaria, dengue.

4. Blood borne

The disease is caused by the transmission of blood or contact of

injured cuts or incisions.

Example: hepatitis, AIDS, etc

5. Contact

The disease is caused by the person to person direct contact of skin to skin such as leprosy, skin and eye infections, fungal infections, etc.,

6. Seˣual

The disease is seˣually transmitted are AIDS, gonorrhea, syphilis.

For more information regarding disease, visit:

https://brainly.com/question/1340366

#SPJ2

what is the rarest ecosystem

Answers

Answer:

In Great Lakes Alvars , Oregon wet prairies, or California vernal pools.

Explanation:

Hope this helps :)

Can someone do this quick?

Answers

Answer: A.

Explanation:

Palisade mesophyll cells contain the most amount of chloroplasts with an average of 30–70 chloroplasts per cell so they will be number 2 in the graph.

Spongy mesophyll cells contain less chloroplasts than their palisade counterparts to enable them have a larger surface area for gas diffusion.

The guard cells have the least amount of chloroplasts on average and so will be number 1. on the graph.

Discuss how algae help support other life on earth?

Answers

Answer:

In the distant past, algae helped turn the earth's then inhospitable atmosphere into one that could support modern life through photosynthesis, which plants use to turn carbon dioxide and sunlight into sugars and oxygen. Some of the algae sank to sea or lake beds and slowly became oil.

Hello Beautiful People!
I was wondering if anyone had made a study guide for the Cambell Biology textbook

Answers

hello beautiful person i hope your day is going very well i do not have a study guide but i can help you with any question you need. brainlist would be much appreciated

PLZ DUE TODAY HELP GIVING BRAINLIEST!!! What substances does a cell need to expel to maintain homeostasis? Select ALL that apply
food
oxygen
wastes
water

Answers

Answer: water, and oxygen

Explanation: Homeostasis depends on maintaining correct fluid levels within the cell and on exchanging useable materials, such as oxygen, for waste products, such as carbon dioxide. Plasma membranes allow water, oxygen and carbon dioxide to pass through by osmosis, or passive diffusion.

Scientists identify hazards and assess exposure in the process of __________.
a.
toxicity studies
b.
risk assessment
c.
risk characterization
d.
toxic assessment
e.
toxic dosage

Answers

Answer:

b. risk assessment

Explanation:

risk assessment is the "process of gathering data and making assumptions to estimate short- and long-term harmful effects on human health or the environment from exposure to hazards associated with the use of a particular product or technology."

source: https://quizlet.com/2545977/aae-apes-unit-5-chapter-17-flash-cards/#:~:text=(risk%20communication).-,risk%20assessment,See%20risk%2Dbenefit%20analysis.

What sequence would be on the other strand of DNA if one strand of DNA containsthe sequence TACGGATCACTAATC . Do not put spaces between the letters in your answer .​

Answers

If one strand of DNA contains the sequence TACGGATCACTAATC, the other strand will contain the sequence ATGCCTAGTGATTAG.

Classification of organisms

Answers

Answer:  It is also known as Metazoa.  

Monera − It comprises unicellular organisms, e.g. bacteria.

Protista − Similar to monera (unicellular), but more developed and complex. It contains nucleus.

Plantae − All plants from smallest (such as algae) to the largest (such as Pine, Eucalyptus trees, etc.) are studied...

Fungi − It is a group of eukaryotic organisms that comprises...

what effects pollution has on people 's life?​

Answers

Explanation:

Short-term exposure to air pollution can irritate the eyes, nose, and throat and cause upper respiratory infections, headaches, nausea, and allergic reactions. Long-term exposures can lead to chronic respiratory disease, lung cancer, and heart disease.

why giant weta have become endangered ?​

Answers

Giant weta have become endangered due to the lack of defense against the invasive predators. They are also an easy prey

Can any earth life thrive in open outer space?

Answers

No, because there is no oxygen.

where are all lemurs find

Answers

Answer:

Madagascar

Explanation:

Most Lemurs can be found in Madagascar due to them only living or being found in African Islands.

Which has the greatest fitness? Cheetah A: Shorter and weaker body structure. Has 3 offspring. Cheetah B: Stronger and more muscular structure. Killed by a disease before reproducing.

Answers

Answer:

If your talking about fitness then it's B

Genetics: A geneticist is studying two genes. Each gene can be either dominant or recessive. A sample of individuals is categorized as follows. Write your answer as a fraction or a decimal, rounded to four decimal places. Gene Dominant Recessive Gene Dominant Recessive (a) What is the probability that in a randomly sampled individual, gene is recessive

Answers

Complete question:

A geneticist is studying two genes. each gene can be either dominant or recessive. a sample of 100 individuals is categorized as follows.

                                         gene 2

                            dominant     recessive

gene 1

dominant                    56                24

recessive                   14                  6

(a) what is the probability that a random sampled individual, gene 1 is dominant

(b) what is the probability that a random sampled individual, gene 2 is dominant

(c) given that gene 1 is dominant, what is the probability that gene 2 is dominant

Answer:

(a) what is the probability that a randomly sampled individual, gene 1 is dominant ---> 80%

(b) what is the probability that a randomly sampled individual, gene 2 is dominant ----> 70%

(c) given that gene 1 is dominant, what is the probability that gene 2 is dominant ----> 70%

Explanation:

Due to technical problems, you will find the complete question, the answer, and the explanation in the attached files.

Please respond using complete sentence.

A slug, frog, heron, bird, and grass plant are all part of the same food chain.

Through which process does energy get into the food chain?

Answers

Explanation:

The energy comes from the grass

Is there any difference in the time of sunrise during summer ans winter?​

Answers

Answer:

yes winter time sunrise exactly time but winter time you can't see sun

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