Answer:
B. The air we inhale has a greater percentage of oxygen than the air we exhale.
Explanation:
First, inhaled air contains about 21% oxygen. Some proportion of this oxygen is used to oxygenate the blood in the alveoli of the lungs for eventual use in cellular respiration. Hence, the proportion of oxygen in exhaled air will be significantly lesser than the proportion of oxygen in inhaled air. Indeed, exhaled air contains about 16% oxygen.
On the contrary, the air we inhale has a lesser percentage of carbon dioxide (0.04%) than the air we exhale (4.4%) due to the additional carbon dioxide produced as a byproduct of cellular respiration—which must be excreted by the lungs.
Drag each option to the correct location on the image.
Classify the goods as public or private property.
sewer systems
mines
radio broadcasts
manufactured goods
Answer:
PUBLIC: radio broadcast , manufactured goods
PRIVATE: sewer system , mines
What can be done to conserve earths coal supply for future generations?
Answer:
a
Explanation:
if you invest in alternative then you save more and more coal
Describe the smell, color, and temperature of the contaminated water
How is cancer related to mutations? How is it related to the cell cycle?
Answer:
Cancer is related to the cell cycle bc, cancer cells mutate. Cancer is unchecked cell growth. Mutations in genes can cause cancer by making cell division rates go up faster or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor
Explanation:
hope this helps, good luck!! :)
how has climate change affected ocean levels
Answer:
Climate change has caused ocean levels to rise higher.
Explanation:
Some organisms seem to have undergone very little evolutionary change
over huge spans of geologic time. One example is the shark. Shark
ancestry dates back around 425 million years, which is about 200 million
years before the earliest known dinosaur. In all, abut 2000 to 3000
species of fossil sharks have been documented. About 1100 species of
shark remain on Earth today. These sharks represent an ancient life form.
Why do you think the rate of evolution of the shark has been so gradual?
4 sentence
Are the finches that Charles Darwin studied on the Galápagos Islands an example of divergent evolution or convergent evolution? Give two point to explain your thinking.
Answer:
shark are slow evolving species because of lower gene flow and rate if reproduction.
Darwin finches undergo divergent evolution
Explanation:
Sharks have evolved slowly because of following reasons –
a) Lower rate of reproduction
b) Restricted gene flow because of isolated habitat such as stretches of deep water
c) Staying close to the eggs and hence guarding them throughout their life thereby allowing no cross mating.
d) Lower rate of mitochondrial DNA (mtDNA) evolution
Darwin’s finches show divergent evolution as different species of finches originated from a common ancestors. The beak size of finches vary form one species to other because of different diet habits
What is the responsibility of a scientist?
O A. To study the natural world carefully
B. To influence voters to make good choices
C. To run governments as wisely as they can
D. To earn as much money as they can
SUBMIT
Answer:
A
Explanation:
It requires scientists to conduct and communicate scientific work for the benefit of society, with excellence, integrity, respect, fairness, trustworthiness, clarity, and transparency. ... Responsibilities of All Scientists a. Excellence in the Conduct of Research i.
Hope this helps!!!
Answer:
a.
Explanation:
just took the test
Kevin wants to lower his carbon footprint. What option should he choose?
A. eat less food
B.drink less water
C. carpool with his work colleagues
D move out to the country
Answer:
c carpool with his work buddies
Answer:
c
Explanation:
PLZ I REALLY NEED HELP: Give one piece of evidence from the eruption of Mount St. Helens that shows that geologic processes can occur rapidly.
Answer:
Explanation:
The 1980 Mount St. Helens eruption was the most destructive in U.S. history. Fifty-seven people died, and thousands of animals were killed, according to USGS. More than 200 homes were destroyed, and more than 185 miles of roads and 15 miles of railways were damaged
Answer:
USGS scientists recount their experiences before, during and after the May 18, 1980 eruption of Mount St. Helens. Loss of their colleague David A. Johnston and 56 others in the eruption cast a pall over one of the most dramatic geologic moments in American history. Stephen M. Wessels, U.S. Geological Survey(Public domain.) Detailed Description USGS scientists recount their experiences before, during and after the May 18, 1980 eruption of Mount St. Helens. Loss of their colleague David
Explanation:
hope this helps please brainiest
Which human activity is correctly paired with the greenhouse gas that it increases?
Answer:
sewage treatment and nitrous oxide.
Explanation:
Hope this helped
:)
1. What can you find out from a model of seed?
A.The size of the seed
B.The shape of the seed
C.The structure of the seed
2. What causes a bee to move pollen?
A.The pollen is light and sticky.
B.The pollen has structures like wings.
C.The pollen has hooks that catch onto the bee.
Guys plssss help me with this...
Which way does the sun’s gravity act on any body in orbit?
A. pulls it forward in its orbit
B. pulls it backward in its orbit
C. pulls it toward the sun
Answer:
pulls it toward the sun
how does the bone matrix differ from the matrix of cartilage
Answer:
Cartilage and Bone are specialized forms of connective tissue. They are both made up of cells embedded in an extracellular matrix. Cartilage is thin, avascular, flexible and resistant to compressive forces. Bone is highly vascularize, and its calcified matrix makes it very strong.
Hope this helped!
Which of the following are accessory organs within the digestive system? (please select ALL that apply) *
Stomach
Large Intestine
Liver
Pancreas
Rectum
all of them are the part of digestive system
Liver and pancreas are the accessory organs within the digestive system.Thus, the correct options are liver and pancreas.
The human digestive system is made up of the gastrointestinal tract and the accessory organs which are needed for digestion . Digestion involves the breakdown of food into smaller parts, until they the food is absorbed and assimilated into the body. The process of digestion takes place in three stages: the cephalic phase, the gastric phase, and the intestinal phase.
The primary organs of the digestive system include organs like stomach,large intestine and rectum.Thus, the accessory organs within the digestive system are liver and pancreas.
Learn more about digestive system,here:
https://brainly.com/question/32531
#SPJ4
What is fertilization in the process of reproduction?
A. The formation of a placenta
B. The joining of an egg and a sperm
C. Sexual intercourse
D. Diploid cell differentiation
USE PAPER TO MAKE YOUR PUNNETT SQUARE. In humans, black hair is
incompletely dominant over blond. The blend of these traits is brown hair. Write
out the genotypes to the three phenotypes in your answer. Example: Black =
Blonde =
Brown = NEXT, cross a heterozygous parent
and a blond-haired parent. Give the genotypic and phenotypic ratios of the
offspring. *
whats primary succession and when does it occur
Answer:
Primary succession is ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life (because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier).
In a Venn diagram, the separate circles contain characteristics unique to each item being compared and the intersection contains characteristics that are common to both items being compared. Abi is working on a Venn diagram comparing theories and laws.
Which can he place in the intersection?
“based on a single hypothesis”
“can be changed”
“factual statement”
“based on repeated experimentation”
Explain what happens when infared radiation reaches earth?
Which of the following terms describes how often an allele is found in a
population?
O A. Allele frequency
B. Allele density
C. Allele strength
O D. Allele dominance
SIIRMIT
Asap please
Answer:
A. Allele frequency
Explanation:
Allele frequency is the fraction or percentage of a specific allele in the total number of alleles in a population.
Use week 17 vocabulary
part of Earth in which life exists including land, water, and air or atmosphere
A)
ecosystem
B)
community
C)
biosphere
D
population
Answer:
C
Explanation:
What cell structure is responsible for regulating all cellular activities?
Choose 1 answer:
A. Nucleus
B. Mitochondria
C. Lysosome
D. Golgi body
Answer:
Let me know if this is right Answer: Nucleus
Explanation:
This organelle known as the Nucleus has two major functions: it stores the cell's hereditary material, or DNA, and it coordinates the cell's activities, which include growth, intermediary metabolism, protein synthesis, and reproduction (cell division). Only the cells of advanced organisms, known as eukaryotes, have a nucleus.
Answer:
Lysosome
Explanation:
The lysosome is the cell’s recycling center. These organelles are spheres full of enzymes ready to hydrolyze, (chop up the chemical bonds of) whatever substance crosses the membrane, so the cell can reuse the raw material. These disposal enzymes only function properly in environments with a pH level of 5, two orders of magnitude more acidic than the cell’s internal pH level of 7. Lysosomal proteins only being active in an acidic environment acts as safety mechanism for the rest of the cell - if the lysosome were to somehow leak or burst, the degradative enzymes would inactivate before they chopped up proteins the cell still needed.
The Fast Plants® shown below follow the same genetic rules as the plants in the Gizmo. What is wrong with this picture?
Answer:
A
Explanation:
The genotypic mix of the two genes, or alleles, that make up an expressed trait is what causes it. Additionally, a specific gene produces a distinct protein that establishes an individual's physical traits. This is how traits are controlled by genes. Thus, option A is correct.
What is the effect of genetic rules in the Gizmo?The genotype, or set of genes an organism acquired from its parents, is ultimately responsible for the qualities that creature manifests. Each chromosome in an animal has two copies, one from each parent.
Cloning and fingerprinting are two potential applications for DNA-based identification technology.
Device Warm-Up DNA profiling compares more than just one person's full genome to another. Instead, only one specific section of the DNA is compared.
Therefore, parent 1 plant is wrong in the picture.
Learn more about Gizmo here:
https://brainly.com/question/12010633
#SPJ2
If you look up in to the sky on a clear,dark night you will see many stars.Put an X next
to each statement that describes the stars that are in the night sky.
A. Our Sun is a star.
B. Stars move across the night
sky.
C. Stars have nomass.
I. Stars eventually become
supernovae andexplode.
J. Youseeastarasitwaswhen
light left it, not as it is now.
D.All stars are the same
brightness.
K. Stars live forever.
L. Stars are very far away.
E. The inner core of a star is solid. M. Stars are larger than planets.
F. It is common for two stars to N. Stars twinkle.
orbit each other.
G. Stars are in galaxies.
O. Stars are the same color but
different temperature
g.
f.
n.
L.
m.
a.
b.
i.
should be right ♡
Explain why a swing will not stay in motion forever after you have given it a push. What happens to the mechanical energy of the swing?
Explanation:
As the pendulum swings back and forth, the balance between the two types of energy changes constantly. At some points in its swing, the pendulum has more kinetic energy. At other points, it has more potential energy. ... No pendulum can swing forever because the system loses energy on account of friction.
Which is a pollutant associated with high-tech gadgets in landfills?
Answer:
Lead is the major pollutants of high-tech gadgets, occupying 40%, while other metals 75%.This is because Pb forms lager components of these gadgets.For example a desktop computer contains about 10 pounds of Pb.
The lead to recycle these material to prevent pollution is important.
Explanation:
Answer:
Heavy metals such as plumb, mercury, arsenic, etcetera.
Explanation:
There are many heavy metals used in high-tech gadgets, such as mercury, cadmium, arsenic, among others.
The pollution produced by industries, technology, agriculture, mining industry, and the indiscriminate use of fertilizers and other chemicals on land is increasing the amounts of heavy metals. These substances are incorporated in rivers, lakes, underground water, vegetables, and animals. These pollutants alter the trophic chain
sustainability creating potential risks in nature and societies, because of the problems to human and animal health.
pls help!! What is it that acts as a template for making RNA?
Answer:
Transcription is the process in which a gene's DNA sequence is copied (transcribed) to make an RNA molecule.
Explanation:
Transcription uses one of the two exposed DNA strands as a template; this strand is called the template strand. The RNA product is complementary to the template strand and is almost identical to the other DNA strand, called the nontemplate (or coding) strand.
Echolocation is an adaptation bats use to _______.
a.
hunt insects in flight
b.
locate flowering plants
c.
find warm places for hibernation
d.
all of the above
Please select the best answer from the choices provided
A
B
C
D
Answer:
D
Explanation:
Bats use echolocation to
navigate when hunting. foraging for food, and looking for places to roost.
Which statement best describes evolution?
Species have changed over time.
Traits acquired during a lifetime are passed to offspring.
Earth’s organisms have not changed over time.
All of Earth’s organisms were formed at the same time.
Answer:
Species have changed over time.
Explanation:
We interviewed 3 students about what they thought were the reasons for the change in Guppy population and this is what they said:
● Norise says the change in the guppy population was caused by a mutation.
● Lauren says the change was caused by a change in the environment.
● Megan thinks both Norise and Lauren are correct.
Who do you think is right? Explain what happened to the guppies over many generations.
Use multiple pieces of evidence of the notes in your answer to receive full credit.
Answer:
Answer:
Megan is right.
Explanation:
The guppy is a very adaptable freshwater fish, commonly found in aquariums world wide. The success of the guppy is mostly due to its ability to adapt to the changes in its environment. Guppies were originally found in the southern american continents and the Caribbean island, but has been exported all over the world, first as a means of curbing the spread of mosquitoes by feeding on the larvae and then as a pet. Over time, guppies have found themselves in diverse environment, and some have undergone mutation of body parts just to adapt. So, the need for adaptation to their constantly changing environment has led to mutation in the guppies.