Please help me

What is the advantage of porous bones in birds?
A. their holes assist in ridding the bird of wastes
B. their holes help keep the feathers intact
C. they are lighter, which helps with flight
D. they are lighter, which makes the bird need less food

Answers

Answer 1

Answer:

C. But see the answer under C. Apparently C is the accepted answer.

Explanation:

A. Not A.I don't think that's a problem for gulls especially on beaches.

B. Not B.  Their feather do not look like they need much help in keeping their feathers attached when in flight.

C. This is not really the answer, but it is the best answer of these 4. The actual answer is that the bones are porous for better air intake which provides more oxygen and hence they are better able to fly.

D. Not D. Food has nothing to do with the problem. Birds get an adequate amount of food without their wings being porous. See the answer for C.

Answer 2

Answer:

C. they are lighter, which helps with flight

Explanation:

Have a great day


Related Questions

Perhaps no one cares more about being able to see in the ocean than do divers. The Cayman Islands, Bonaire and the Bahamas are all popular dive destinations due to both submarine features, such as coral reefs, and water clarity. Under the best of circumstances, visibility in these locations is between 50 ft (15 m) to 150 ft (45 m). Based on this, and what you have learned about sound, write a paragraph describing those ways in which humans and marine organisms use sound for some underwater tasks and light for others.

Answers

Answer:

Humans and marine organisms use sound finding depth of the ocean and objects.

Explanation:

Humans and marine organisms use sound for some underwater tasks such as finding depth of the ocean and objects. Human use sonar which is a device used to explore the ocean and animals use echolocation to find food and identify objects that comes in their way. Sonar is present in submarine uses sound waves to detect objects that comes in their way so both humans and marine organisms use sounds.

Assignment 1
-The cell is the smallest unit of life. All living things are made of cells.
A) What are the three principles of the cell theory? And explain each in details.
-Present-day mitochondria and chloroplasts probably evolved as a consequence of early endosymbiosis: the ancestor of the eukaryotic cell engulfed a bacterium, and the bacterium continued to function within the host cell.
B) What is the Endosymbiont theory? What is the evidence supporting this theory?

Answers

Answer:

buang si manoy kag ikaw ang abnoy

The study of which trees monkeys feed in is part of the life sciences.
Please select the best answer from the choices provided
T
F

Answers

Answer:

True

Explanation:

Answer:

T

Explanation:

;}

help! If a virus has an incubation period of 12-24 months, then it is most likely --

Answers

my best guess would be LTBI (latent tuberculosis infection)

most incubation periods are in the range of 3 weeks to 3 months, though some cancer viruses have incubation periods of 10 years long. exc..

tuberculosis: 6-24 months

aids: 1-15 years

leukemia: 2–12 years

good luck!

Not sure if this is what you meant, but this is what I understoodit on what you said. Based on existing literature, the incubation period (the time from exposure to development of symptoms) of SARS-CoV-2 and other coronaviruses (e.g. MERS-CoV, SARS-CoV) ranges from 2–14 days.

see attached...thank you

Answers

I don’t see anything
Sorry it is blank , I can’t see anything

QUESTION 1 Genetic information has become part of our culture and it is difficult to tell the difference between unmodified and genetically modified food sources such as plant and animals. After reading this module’s material regarding vectors in biotechnology, consider the potential for nanotechnology and scientific advancement. Research nanotechnology and its potential use in biotechnology. In one or two paragraphs, explain the potential advantages and disadvantages of nanotechnology in health care, agriculture, or industry and discuss whether you would or would not support further research.

Answers

Answer:

Nanotechnology is a field of producing materials and devices from atoms and molecules.

Explanation:

Nanotechnology is a field that concerned with producing materials and devices from atoms and molecules. A nanometer is one-billionth of a meter in size. Nanotechnology can be used to “recognize” the cells of interest which allows associated drugs to reach diseased tissue without damaging healthy cells. Nanotechnology produces new and faster kinds of computers, more efficient power sources and more effective medical treatments. Main disadvantages include threats to security, privacy, health and the environment. More research must be done in this field to get more benefits from it.

The Minimal Chromosome To enable it to be transmitted intact from one cell generation to the next, the linear DNA molecule of a eukaryotic chromosome must have appropriate nucleotide sequences making up three special kinds of regions: origins of replication (at least one), a centromere, and two telomeres. What would happen if such a chromosomal DNA molecule somehow lost: a) all of its origins of replication

Answers

Answer:

The chromosome wouldn’t be able to replicate

Explanation:

Without an origin of replication, the chromosome could not be copied prior to mitosis.

Which substance has a low albedo?
A. A black asphalt road
OB. A beach of white sand
O O O
C. A shiny building
D. An iceberg

Answers

It’s a guess but it’s not C. Because that would be high albedo. Low albedo would probably be D. An Iceberg

Explanation: Albedo is the measure of the reflectivity of a material. A high albedo means it reflects a lot of light and a low albedo means it absorbs a lot of light.

My Second Explanation: The higher the albedo, the more the surface reflects light. Snow and ice have high albedos; a dark rock would have a lower albedo.

punnett Square st. Patrick's Day worksheet... did anyone have the answers..ughh... so confusing!!​

Answers

Do you have a picture? That might make it easier for people to understand and help you.

which organelle breaks down sugar molecules that supply energy to the cell​

Answers

Answer:

Mitochondria

Explanation:

PLEASE HELP ME WITH SOME QUESTIONS


1. What is a convection current?

2. How do thermometers work?

Answers

Answer:

1.a current in a fluid that results from convection.

2.measures temperature through a glass tube sealed with mercury that expands or contracts as the temperature rises or falls.

Explanation:

Answer:

1.A convection current is a process that involves the movement of energy from one place to another. It is also called convection heat transfer. What is the reason that makes you feel hotter when placing hands above a campfire or when sitting next to it? Or, why is the movement of liquid so rapid when water is boiled in a pot? These things happen as a result of the Convection Currents.

Explanation:

2. A thermometer measures temperature through a glass tube sealed with mercury that expands or contracts as the temperature rises or falls. ... As temperatures rise, the mercury-filled bulb expands into the capillary tube. Its rate of expansion is calibrated on the glass scale.

The DNA during interphase is in _____ strands called _____

Answers

I think it’s Chromosome and sister chromatid
Sorry if I am wrong

Which protein is damaged at the nerve endings during mercury toxicity
a. keratin
b. tubulin
c. pilin

Answers

Answer:

b. tubulin

Explanation:

Tubulin is a superfamily of proteins that make up microtubules who have many functions including intracellular trasport of neuron's vescicles

Tubulin protein is damaged at the nerve endings during mercury toxicity.

What do you mean by Mercury Toxicity?

Mercury toxicity occurs when an individual is highly exposed to mercury.

The inhalation of mercury vapor can produce harmful effects on the nervous, digestive and immune systems, lungs, and kidneys, and may be fatal. This is considered as one of the severe toxicity that a person suffers.

Tubulin proteins are a very important class of proteins that helps in the formation of microtubules that have numerous functions in our body including the cytoskeletal arrangement of cells, intracellular transport of neuronal vesicles. And when a person suffers from mercury toxicity, such proteins are damaged and result in improper conduction of nerve impulses.

Therefore, Tubulin protein is damaged at the nerve endings during mercury toxicity.

To learn more about Neuronal function, refer to the link;

https://brainly.com/question/13061744

PLEASSEEE HELP ASAP THANKS ​

Answers

Answer:

1,3 and 5.............

Sense helps in translating outside information in understanding
the environment.
Select one
True
False​

Answers

Answer:

true

because of sense we only understand our environment

if there will no sense

then there will no mean of anything

-2 In a pasture ecosystem a large portion of the biomass is represented
pasture vegetation compared to animals that feed on these grasses.
illustrated by such a pasture ecosystem is called alan...
A food chain.
B food web.
с ecological pyramid.
D energy flow.​

Answers

a

Explanation:

im not really sure about the answer i chosed but maybe yes

how do data collected from ice cores provide evidence for climate change.

Answers

Answer:

Explanation:

Ice cores can tell scientists about temperature, precipitation, atmospheric composition, volcanic activity, and even wind patterns. The thickness of each layer allows scientists to determine how much snow fell in the area during a particular year.

Please answer this
MARK THEM BRANLIST
ASAP

Answers

Answer:

im so so so sorry if this is wrong but im pretty sure its C.

xplanation:

all the others have things they dont

want C. has the best resonings and i definetly

think that   is the answer but i ould check just to be sure :D have a great day

Plant growth is the result of cells dividing during _____.
plss help

Answers

Answer:

Plant growth is the result of cells dividing during mitosis.

Explanation:

Mitosis is the process in which cells divide for cell growth or repair. All the cells, as a result of mitosis will have the same number of chromosomes as of the cell at the start.

Answer:

mitosis

Explanation:

Hope this helps

RNA differs from DNA in that RNA
A.all of these
B.contains the nitrogenous base uracil
C.contains a different sugar molecule
E.is single-stranded

Answers

Answer:

A..they are all characteristics of RNA

Which process releases the highest amount of energy?

Answers

Answer:

glycolysis

Explanation:

In the process of glycolysis only 2 molecules of ATP are produced. Maximum energy is released, when the reduced coenzymes produced in the process of Krebs cycle are oxidised in the process of oxidative phosphorylation in electron transport chain.

QUESTION 1
Which of the following statements are true of arteries and veins? (Read carefully and select all of the correct statements.)
A. Venous anastomoses ensure that oxygenated blood will get to tissues.
B. The endothelium of both arteries and veins contributes to the prevention of abnormal clotting.
C. The smooth muscle layer of veins is thicker than that of arteries because veins are farther from the heart.
OD. Only veins have valves, which keep the blood moving between heartbeats.
E. The fibrous connective tissue layer of arteries is relatively thin because the blood is moving fast.
OF Arterial anastomoses ensure that blood will be able to return to the heart.

Answers

Answer: B, D

Explanation:

Is this a Med School K Question? The endothelial lining of blood vessels have many functions, including, preventing clotting. Veins carry blood that has very low pressure and have valves to control the one-way flow of blood. The rest are false. Only the pulmonary vein carries oxygenated blood. Arteries have more smooth muscles than veins. The anastomoses are present to act as alternative pathways to reach cells.

What are features of an ocean marine ecosystem?






ps. ANSWER THIS IMMEDIATLY NOW!!! thankyou

Answers

Answer:

Marine ecosystems are characterized by factors such as availability of light, food and nutrients. Other factors that affect marine ecosystems include water temperature, depth and salinity, as well as local topography. Changes in these conditions can change the composition of species that make up the marine community.

I would appreciate help please thank you

Answers

Answer:

i am fairly sure the last option isn't true.. i hope i'm correct

What happens to the process of succession after a volcanic irruption?

Answers

Answer:

Lava from a volcanic eruption hardens into bare rock. Primary succession begins with soil formation. The first stage of succession involves pioneer species. In primary succession, pioneer plants are those that can grow without soil, such as lichens.

Hope it helps

Please mark me as the brainliest

Thank you

7. Apply: Look carefully at the picture below and you will see an insect called a
katydid. Katydids evolved from grasshoppers through natural selection. Use
what you have learned to explain how this could have happened.

Answers

Answer: This description is an example of camouflage adaptations.

Explanation:

The grasshoppers are the insects which feed on plant parts and they are able to change their color with respect to their surrounding environment. For example, if they are living on the brown tree trunk they change their color to brown and on the green grass or green leaves they change to green to remain undetected by the predators. This way they are able to camouflage their predators this adaptation allows their survival in their environment with due course of natural selection. The phenotypic trait that is grasshopper is able to change its color increases the chances of survival of the grasshopper. Kaytids have evolved from grasshoppers means they have camouflage traits as that in parent grasshopper species. They have structure which blends with surrounding environment, that is they have wings that mimic that of pattern of leaf venation, also when they change the color to brown the shape of the body appears to be as that of stem. This structural adaptation help them to camouflage their predators.

brainpop newton's laws of motion worksheet answer key catagorize it answer

Answers

Answer:where the  questions. cos

Explanation:

Which best describes the structure of DNA?

A.It has a double helix with repeating bases

B.It has a triple helix with repeating bases

C.it has a double helix with a single base

B.It has a triple helix with a single base

Answers

Answer: A

Explanation:

The double helix describes the structure of DNA.Apr

What is the main reason to put a telescope in space?
A.
It is much closer to the stars.
B.
It can receive star light that cannot reach Earth.
C.
Light reaching it is not affected by the movement of air.
D.
It can detect objects behind the moon.

Answers

Answer: D

Explanation:

The main reason we put telescopes into space is to get around the Earth's atmosphere so that we can get a clearer view of the planets, stars, and galaxies that we are studying. Our atmosphere acts like a protective blanket letting only some light through while blocking others.

Cell X
Cell w
Cell Y
Cell Z
Х
х
х
Cell Membrane
x x
х
х
Cell Wall
Chloroplasts
Х
х
DNA
х
х
х
Nucleus
Х
Х
х
Which cell that was viewed is most likely a prokaryote?

Answers

nucleus,cell membrane

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