Answer:
c
Explanation:
well volunteers are use to help and learn so i think c is the correct answer
HELP!!
Which features of alveoli enable them to exchange gases efficiently? (Select all that apply.)
A. thin walls
B. surrounded by blood vessels
C. small numbers of them in each lung
D. large surface area
Do not scam me using links or attachments (except photos of the answer) or answer this by saying a simple yes or no because that also scams me.
Answer:
the answer is a i hope this helps
Explanation:
The sac-like structure of the alveoli increases their surface area. In addition, the alveoli are made of thin-walled parenchymal cells. These features allow gases to easily diffuse across the cells. so the
Alveoli has thin walls which are surrounded by blood vessels, and they have maximized are for gas exchange. Thus, option A, B, and D are correct.
What are Alveoli?These are basic respiratory units, which are balloon like structure present in the lungs, where exchange of gases takes place. A pair of human lungs can contain approximately 480 million alveoli, which produces about, 50 to 75 square meters surface are.
Alveoli are made of thin walls, and they are covered by a rich blood supply through capillaries, this supplies a diffusion gradient for oxygen to move into the blood and carbon dioxide to move into the lungs.
Therefore, the larger surface area, presence of thin wall, which is only one cell thick, and rich blood supply due to presence of blood vessels enable them to exchange gases efficiently.
Learn more about alveoli, here:
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Please help me with my science question :D
Answer:
See firstly draw the The Rat in the left side of your box
And later draw the Snake in your center box
And at last draw the Eagle in the last box
Answer:
hope it helps :D
Explanation:
carrots < rabbits < foxes
If it died, the consumers that feed on it - rabbits - would have no food. They would starve and die unless they could move to another habitat. All the other animals in the food web would die too, because their food supplies would have gone.
Sam is making a new homestead in Alaska and needs a supply of fresh drinking water.
i) How can Sam use his knowledge of the water cycle to determine how much water is available?
NO LINKS AND COMPLETE ANSWER (PARAGRAPH)
ii) Describe in detail: Where can he find fresh drinkable water? How can he collect that water? How can he confirm that it is not contaminated?
Answer:5 Understanding Your Septic System And Water Quality ... 3.1.3 Constructed Wetlands: A New Concept In Treating Wastewater. Section 3.2. On-site ... ground information on water supplies, the water cycle, ... We use water in so many ways that we take it for granted ... water on earth, is liquid fresh water available for most.
Explanation:
PLEASE HELP, ILL GIVE BRAINLIEST.
Answer:
Explanation:
i believe its c because the layers of smooth muscle allow the stomach to contract to mix and propel food through the digestive tract
C. to help churn the food and help break it down
Which statement best describes how panting after running helps a person's body maintain homeostasis? EXPLAIN THE ANSWER
A). It keeps the person's body warm when it is cold outside.
B). It rids the body of harmful organisms in the respiratory tract.
C). It brings more oxygen into the body to help meet increased energy
needs.
D). It signals the body to start exercising to prevent getting out of
shape.
Answer:
the answer is C
Explanation
we all know they homeostasis is the regulation of body fluids and temperature in the body , as the runner is panting , he is also sweating , sweating regulates the body temperature , panting is a signal to the brain that the person is losing oxygen so while panting , the runner is catching his breath
If a fossil contains 50% of the amount of carbon that a living animal contains, how many half lives have passed while it decayed? How old is the fossil? (half lives x 5730)
The currently accepted value for the half-life of 14C is 5,730 years. This means that after 5,730 years, only half of the initial 14C will remain; a quarter will remain after 11,460 years; an eighth after 17,190 years; and so on.
Which change would most likely increase the overall mass of a plant?
A. decreased reproduction
B. decreased respiration
C. increased photosynthesis
D. increased transpiration
im confused its more science but yah oof
Use the photo to answer the question.
The devastation from the landslide shown—the disturbed soil, the knocked-over trees, the blocked waterways and road—are evidence that the change happened Response area over time.
their is to answers rapidly or slowly
Single term algebraic expression is called?
1 Monomial
2 Binomial
3 Trinomial
4 None of these
Answer:
Monomial
Explanation:
Dominic made the table below to organize his notes about mixtures. A 1-column table. The first column labeled properties of mixtures has entries has no set composition, must have more than one state of matter, must have more than one substance. What mistake did Dominic make? A. The title should read “Properties of Solutions” because some mixtures do not have all of the properties listed. B. There is a definite recipe to make each mixture, so the composition of a mixture is set. C. Although it is possible to have more than one state, it is also possible to have only one state. D. A single substance can be used to make a mixture if the substance is composed of more than one element.
Although it is possible to have more than one state, it is also possible to have only one state.Explanation:
Provide an example of how a genetic mutation could be positive, then explain how that mutation could cause a change in a population over time.
Answer: Some mutations happen during cell division, when DNA gets duplicated. But the mutations we hear about most often are the ones that cause disease. Some well-known inherited genetic disorders include cystic fibrosis, sickle cell anemia, Tay-Sachs disease, phenylketonuria and color-blindness, among many others.
Limiting factors are divided into two categories. What are they? Give an example of each.Limiting factors are divided into two categories. What are they? Give an example of each.
Answer:
Limiting factors fall into two broad categories: density-dependent factors and density-independent factors. These names mean just what they say: Density-independent factors have an impact on the population, whether the population is large or small, growing or shrinking.
the density-dependent factor example is:
Density-dependent factor, also called regulating factor, in ecology, any force that affects the size of a population of living things in response to the density of the population (the number of individuals per unit area).
the independent factors example is:
Pollution. Like other density independent factors, pollution is a good example of a density independence.
Explanation:
pls mark brainliest
one major contributor to global warming is an increased amount of carbon dioxide in the atmosphere. if the number of plants significantly increased then
A ) global warming might get worse because of the increase in carbon dioxide caused by plants
B ) global warming might be reduced because of the decrease in carbon dioxide caused by photosynthesis
C ) global warming might get worse because of the increase in oxygen caused by plants
D ) there might not be noticeable impact on global carbon dioxide levels
Answer:
B
Explanation:
Global warming might be reduced because plants take in carbon and give out oxgyen.
IF YOU ANSWER ALL THESE QUESTIONS AND THERE ARE CORRECT YOU WILL GET BRAINLEAIST
1. Which part of the flower produces sperm?
2. Which part of the flower attracts pollinators, like bees?
3.What is the name of the male reproductive organ of the flower?
4.What is the function of the stamen?
5. What holds up the stamen?
6. What are the male reproductive parts of the flower?
Answer:
1. The anther produces the pollen grains that contain the sperm needed for fertilization
2.Petals attract the pollinators.
3.Stamens are the male reproductive organ
4.The main function of the stamen is to produce the pollen grains, which house male gametes , necessary for reproduction.
5.The stamen is made up of two parts: the anther and filament. The anther produces pollen (male reproductive cells). The filament holds the anther up.
6.A stamen consists of an anther (which produces pollen, the male reproductive cell) and a filament.
please mark as brainlsit if it helps
Answer:
1. the anther
2. showy petals and sepals, nectar guides, shape, size, and color.
3. stamen
4. The pollen-producing part of a flower, usually with a slender filament supporting the anther.
5. the anther and filament
6. anther, filament, pollen
Explanation:
what important detail should be modeled in the movement of the moon?
HEY yall I m testing for TNready tmr i m so scared :((((( im so scared for the science part
Answer:
just concentrate on the test don't think about anything else you'll do fine
Explanation:
can i have brainliest
Answer:
Me too man. I'm starting next week.
Explanation:
It's all going to be alright tho, just try your best. Its next to impossible to be held back by an end of the year test.
!!!!!!PLEASE I NEED HELP ASAP!!!!!!WILL MARK BRAINLIEST!!!!!!!
Ficus leaves have a pointed end called a drip tip. A drip tip causes water that collects on the leaves to drain off. this keeps water from weighing down the leaves. In which environment would this adaptation be most useful?
A. a sandy, dry desert
B. rocky hills
C. forest with water fall
D. grassy plains
Answer:
C
Explanation:
A forest with rain fall is where the adaptation would be most useful since the leaves need it to not be weighed down by the often precipitation
Answer:
C
Explanation:
Can I please get help?
Answer:
Technology because we don't have the necessary technology to explore the parts of space and for all we know we don't even know what the universe actual looks like or if there are alternate universes but as technology advances we will know. Explanation:
Make a Punnett Square for two smooth seed hybrid pea plants (Ss).
Answer:
Hope this helps!
Which statement best describes how panting after running helps a person's body maintain homeostasis? EXPLAIN THE ANSWER
A). It keeps the person's body warm when it is cold outside.
B). It rids the body of harmful organisms in the respiratory tract.
C). It brings more oxygen into the body to help meet increased energy needs.
D). It signals the body to start exercising to prevent getting out of shape.
Which of the following contributes to the desertification of the land?
A. under-populated land
B. overgrazing of farm animals
C. sufficient irrigation
D. failure to cultivate the land
Respuesta:
B. pastoreo excesivo de animales de granja
Porque son lugares secos.
Explicación:
Las políticas e infraestructuras que promueven la agricultura en las tierras de pastoreo que no pueden mantener sistemas viables de cultivo, contribuyen a la desertificación. La mayoría de las áreas de tierras secas (el 65%) son tierras de pastoreo que son más adecuadas para el pastoreo sostenible que para el cultivo.
1. What is a double helix?
2. What forms the sides of the helix?
3. What is a nucleotide?
4. What are the three components of a Nucleotide?
5. What is a junk DNA?
Answer:
1. Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups.
2. The DNA double helix. The two sides are the sugar-phosphate backbones, composed of alternating phosphate groups and deoxyribose sugars. The nitrogenous bases face the center of the double helix.
3. A nucleotide is an organic molecule that is the building block of DNA and RNA. ... A nucleotide is made up of three parts: a phosphate group, a 5-carbon sugar, and a nitrogenous base. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine.
4. A nucleotide is made up of three parts: a phosphate group, a 5-carbon sugar, and a nitrogenous base. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine.
5. In genetics, the term junk DNA refers to regions of DNA that are non-coding. Some of this noncoding DNA is used to produce noncoding RNA components such as transfer RNA, regulatory RNA and ribosomal RNA
Hopes this helps.
Why is having many sense organs an advantage for an animal?
How many consumers are omnivores in the food web below?
Answer:
1
Explanation:
Omnivores are animals that eat both plants and animals. If you look at the bottom of the food web, you need to look for arrows that point towards an animal that also consumes other animals. The arrows indicate that the energy is being transferred from the plants to the omnivore. The Raccoon is the other organism that eats both a producer (blackberries) and other predators such as garter snakes and meadow voles.
Hope this helps!! Comment down below if you have any questions and please considered marking me as brainliest!!
Answer:
1
Explanation:
Parasites are organisms that live in or on a host organism, obtaining essential nutrition for themselves from the host. Parasites rarely kill their hosts, however. Which explanation BEST describes why evolutionary pressures selected for parasites that do not kill the host?
Answer: Parasites that kill the host lose their source of nutrition or energy and would be less likely to survive.
Explanation:
Which human activities would most likely increase turbidity? Check all that apply.
cutting down trees
building roads in mountains
constructing buildings
planting gardens in vacant lots
removing sediments from sidewalks using water
Answer:
A.
B.
C.
E.
Explanation:
The human activities that will most likely increase turbidity are as follows:
constructing buildingsremoving sediments from sidewalks using waterWhat is turbidity?Turbidity is a quality of having the lees or sediment disturbed i.e. not clear.
Turbidity is a measure of transparency of a water body. It is caused by a release of sediments into the water that makes it unclear.
Therefore, the human activities that will most likely increase turbidity are as follows:
constructing buildingsremoving sediments from sidewalks using waterLearn more about turbidity at: https://brainly.com/question/26612834
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PLS HELp
Flocabulary
Hurry this is due at 11:59!!
Answer:
Explanation:
Can SOmeone do this for meh... I just got back home and im tired ;L
Firmly hold with one hand the end of a ruler (or similar object) over the edge of a table. Pull the other end down gently and listen to the sound. Then give the ruler (or similar object) a harder downward pull, and see if there is a difference in sound. Describe what you hear and explain the difference using the terms “energy,” “amplitude,” “intensity,” and “decibel.”
2. Take some time to listen to sounds in your environment. Make a list of ten sounds, ranking them from the highest pitch to the lowest. Write a couple of sentences describing whether this was easy or difficult and why. (Some of the sounds can come from tapping objects that vibrate or playing musical notes on an instrument.)
What are winds that blow in a certain direction most of the time and can produce surface currents called?
the Coriolis effect
surface winds
prevailing winds
ocean winds
Answer: surface winds