The largest origins of methane emissions from human activities are oil and gas systems, livestock enteric fermentation, and trashyard.
What are the human sources of methane?Methane is cast from a mixture of human-influenced and natural sources.
Human-based emission sources contain landfills, oil and natural gas systems, agarian activities, coal mining, stationary and mobile burst, wastewater cure, and specific industrial processes.
Thus, are oil and gas systems, livestock enteric fermentation, and trashyards.
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How is agarose gel electrophoresis used to separate mixtures of molecules?.
A quadrilateral has congruent side lengths. 2 opposite angles have measures of 100 degrees. The other 2 opposite angles have measures of 70 degrees and (5 x) degrees. What is the value of x? 14 15 16 17.
(A.) 14
Hope this helps!!! <3
Don't forget to drink water!
ANSWER IS A
The biodiversity of cultivated crops is currently under threat from industrial
farming and climate change. The extinction of important crop plants
cause mass starvation. Which of the following is the best way for humans to could
use a seed bank to help prevent this problem?
• A. By
storing a great variety of seeds in case one variety goês
in the wild
extinct
• B. By storing a large number of seeds that can be eaten when famine
occurs
• C. By growing a large quantity of crops from seed and selling the
food they produce
• D. By growing a large quantity of
food they produce
crops from seed and storing the food they produced
The best way for humans to use a seed bank to help prevent the threat to biodiversity of cultivated crops is by storing a great variety of seeds in case one variety goes in the wild extinct.
What is biodiversity?
Biodiversity refers to the variety of life forms that exist on Earth, including the different species of plants, animals, fungi, and microorganisms, as well as the genetic diversity within each species, and the diversity of ecosystems and biomes. Biodiversity is important because it supports the basic ecological processes that sustain life on Earth, such as photosynthesis, nutrient cycling, and pollination. It also provides us with a wide range of ecosystem services, such as clean air and water, food, medicine, and cultural and recreational opportunities.
The best way for humans to use a seed bank to help prevent the threat to biodiversity of cultivated crops is option A, which involves storing a great variety of seeds in case one variety goes extinct in the wild. This approach is important because it helps to preserve the genetic diversity of crop plants, which is essential for breeding new varieties that can withstand changing climate conditions and resist diseases and pests. Storing seeds in a seed bank provides a backup in case a particular crop variety becomes extinct in the wild. It is a cost-effective way to protect the genetic diversity of crop plants and can serve as a long-term solution to the problem of food insecurity.
Option B, storing a large number of seeds that can be eaten when famine occurs, may provide short-term relief during a food crisis, but it does not address the root cause of the problem, which is the loss of biodiversity in cultivated crops. Option C, growing a large quantity of crops from seed and selling the food they produce, and option D, growing a large quantity of crops from seed and storing the food they produced, are both important for food production, but they do not directly address the problem of biodiversity loss in cultivated crops.
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its A
just took the test
4 Which of the following elements is considered to be the building block of life?
F oxygen
G hydrogen
H nitrogen
J carbon
Answer:
F oxygen
Explanation:
we need oxygen for respiration and hydration
Which structure in the figure above produces bile?
A
B
C
D
Answer:
B gallbladder
hope it helps
Question 1
Which statement about cells is false?
a
b
Different cells work together to form tissues and organs.
Cells are the basic structure of living things.
New cells contribute to growth and repair.
Cells contribute only to the reproduction of an organism.
C с
d
Answer:
the last one which I'm guessing is d......cause it kinda messed up
Calculate the total magnification of a microscope image using x20 eyepiece lens and x60 objective lens
Answer:
magnification : objective lens × eyepiece lens
60x × 20× = 1200×
Hemorrhagic fevers are caused by RNA enveloped viruses which include all of the following EXCEPT A) arenavirus. B) filovirus. C) flavivirus. D) arbovirus.
Answer:
D) arbovirus.
Explanation:
D is not to be included
What is the function of the lymphatic system?
removes worn-out blood cells in the pancreas
circulates plasma through the body to fight infection
delivers nutrients to cells, removes cellular waste, and fights infection
produces red blood cells for fighting infection
Answer: I believe it is C: delivers nutrients to cells, removes cellular waste, and fights infection.
Forgive me if im wrong but its what I choose on the exam
Answer:
The answer is C!
Explanation:
Whats the chemical equation of cellular respiration
Contrast apoptosis and cancer.
Answer:
Apoptosis is a multi-step, multi-pathway cell-death programme that is inherent in every cell of the body. In cancer, the apoptosis cell-division ratio is altered. Cancer treatment by chemotherapy and irradiation kills target cells primarily by inducing apoptosis.
Explanation:
Can you tell for certain if eleanor is a definite carrier for methemoglobinemia
Answer:
It is hard to say for sure if Eleanor Fugate is a carrier for methemoglobinemia. If we knew that Martin (her father) was definitely blue, then the answer would be yes. However, because we do not have that information, nor information about her offspring, we can not tell for certain
Which statement best describes the relationship between cellular respiration and photosynthesis?
Group of answer choices
A. Cellular respiration produces oxygen, which is the reactant required for photosynthesis.
B.Cellular respiration produces carbon dioxide, which is the reactant required for photosynthesis.
C. Cellular respiration and photosynthesis have the same products but use different reactants.
D. Cellular respiration and photosynthesis are the same processes; one occurs in animal cells and the other in plant cells.
Answer:
cellular respiration produces carbon dioxide which is the reactant required for photosynthesis
Assume that hair texture is determined by a single gene. Describe three possible alleles for the hair texture gene
p(allele for the frequency of straight hair) and q(the frequency for curly hair). Here is an article that should help further explain hair phenotypes!
hetech.org/ask-a-geneticist/three-equally-represented-phenotypes
you and a friend are discussing human evolution. your friend insists he has been told that humans arose directly from chimpanzees. you disagree with your friends concept of human evolution. present an argument to help your friend obtain a better understanding of human evolution and the origind of humans as a species. your answer must include refrences to both humans and apes.
Answer:
yes
Explanation:
Humans are made when a man and woman have a good time together and yea also apes didnt raise humans or anything its been scientifically proven so yeah
Immediately after fertilization, the united egg and sperm is called a:.
Which of the following is the model of DNA replication that best accounts for our current understanding of the genetic replicative process?
a. polymerase
b. semiconservative
c. helicase
d. primase
Answer:
The correct answer is B
Explanation:
I hope this helps and I remember doing this
How long does it take for steroids to get out of your system?.
Answer: It takes 14 days for steroids to clear out your system
Explanation:
how was your eye color determined
Answer:
2, phenotype
traits are determined using genetics
Practice: Classification using Dichotomous Keys Uh oh! Little Sammy's babysitter forgot to check for monsters under his bed when she tucked him in, and he found all of these when she left. Can you help him determine their names so he can ask them all to leave? Use the dichotomous key on the next page to help you.
A dichotoums key uses morphological and molecular traits to classify organisms into different taxonomic groups.
What is a dichotomous key?A dichotomous key might be considered a useful tool to classify organisms. The key provides an easy and fast way for identification by describing different morphological and molecular traits, leading you to the correct taxonomic classification.
It is simple to read a dichotomous key. The term dichotomous refers to how information is provided. You will always have two options (a and b, or 1 and 2), and you will have to choose one of them according to the characteristics of your organism. The key describes specific morphological oir molecular traits of organisms and you need to choose between the options which ones matches the ones of your organism.
Probably you might need an atlas or a dictionary to understand some of the technical terminologies. You will also need to carefully observe your specimen, to get to distinguish different traits. If the specimen is too small you might need a loup.
Since I do not have your dichotomous key, we are going to analyze a simple example using a group of 5 organisms. We will make the classification according to the description (organisms in the attached files).
Dichotomous key
Statement 1a ----------- The organism is a vertebrate ----------- Frog
Statement 1b------------ The organism is invertebrate ----------- Go to 2
Statement 2a ---------- The organism has a multisegmented
and elongated body, with too many ----- centipede
legs.
Statement 2b ---------- The organism has a relatively short body
and with fewer legs ------------------------------ Go to 3
Statement 3a ----------- The organism has 8 legs ----------------------- Spider
Statement 3b ----------- The organism has 6 legs ----------------------- Ant
As you can see, this a very simple example, but ilustrates how the key provides enough information for you to reah the correct option.
So in your example, your dichotomous key will probably provide you information about different traits such as body-color, number of extremities, hair, and other, and you will have to observe the all your individuals and choose which trait matches each of them.
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How do you predict the embryo of an
eagle would compare to the embryos
shown in the photographs? Apply patterns
to make your prediction.
Answer:
✏Embryology Evolution Evidence. Darwin’s theory of biological evolution noted that all vertebrates have gill slits and tails in early stages of embryo formation, even though these features may be lost or modified in the adult-form phenotype. For instance, human embryos have a tail that becomes the tail bone.
Explanation:
Which of the following is an example of mechanical control of nonnative species? a. pesticides b. herbicides c. net barriers d. inspections please select the best answer from the choices provided a b c d
Answer:
The answer is c. net barriers.
Non-native species can do a great harm to native species or ecosystem and there are many ways to control them. Net barriers are mechanical control. Pesticides and herbicides are chemical control. There are also natural (biological control) control, such as diseases and pests, and environmental control, by altering the environment.
If you block histone deacetylase, what effect would you expect to see on transcriptional activity?.
Compared to a polygenic trait, a single-gene trait tends to have.
Answer:
the answer is a fewer phenotypes
________ is/are a natural source of air pollution that is/are not influenced by human activity.
Answer:
Gas and I mean air gas not liquid gas.
Explanation:
Hope you get it right!
Please helppp with this question
In an animal cell, DNA is found in the greatest
concentration in the
(1) vacuole
(3) nucleus
(2) ribosome
(4) cytoplasm
Answer:
the nucleus
Explanation:
it's not necessary for the DNA to be in the nucleus but i guess it acts as a protection?
What did Griffith use to kill the
pneumonia-causing bacteria?
A. antibiotics
B. heat
C. healthy bacteria
Answer:
B. Griffith used heat to kill pneumonia-causing. :)
Explanation:
Which curve would most likely represent the behavior of the receptor once it has been activated by its signal molecule?
Answer:
slow rising check mark curve
Explanation:
does anyone know what this is?:)