what happened around 2.5 billion years ago that lead to a tremendous increase in the amount of oxygen in earths atmosphere?
Answer:
The Great Oxidation Event.
Explanation:
i hope this helps
what is considered to be incomplete dominance?
If the order of base pairs in a DNA molecule is changed, what might occur?
Answer:
When you change the order of the base pairs in an organism, that is called a mutation. There are three types of mutations: a deletion, an addition, and a substitution. In a deletion, one of the three bases in a codon is pulled out, or deleted.
Explanation:
1. Identify the different types of mediated and online communication channels. Discuss the advantages and disadvantages of each.
Mediated communication channels include telephone, letters, audio/video cassettes, radio, televisions, etc. while online communication channels websites, social media, E-mail, etc.
What do you mean by Mediated communication?Mediated communication may be defined as any circumstances where a technological medium is presented in face-to-face interaction.
Advantages of Mediated communication channels:
People can swap, store, edit, broadcast, and copy any written documents.Information can pass out to maximum people in a very short period of time. It requires less maintenance and cost.Disadvantages of Mediated communication channels:
It lacks true human contact.Sometimes false or fraudulent pieces of information spread that cause severe harm to people and their psychology. There may be an absence of any regulation or prevention of mishappening.Advantages of Online communication channels:
Cost-effective and supporting during unfavorable times. It promotes globalization.It has long-term productivity and efficiency.Disadvantages of Online communication channels:
It steals your privacy. It lacks a sense of humor, therefore, there's a big risk of misunderstanding.It lacks physical contact which must be more effective in any means.Therefore, it is well described above.
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What would the population density of whitetail deer in an area be if you had 60 deer living in a 30 acre area.
(06.03 MC)
Sickle cell anemia is known to run in a family. A pedigree chart for this family is shown below.
Parents
Offspring
What percentage of the offspring
are carriers of the disease but do not have it?
00%
O 25%
O 50%
© 100%
Based on the pedigree, the percentage of offspring who are carriers of sickle cell anemia is 50%.
What is sickle cell anemia?Sickle cell anemia is a disease of the red blood cells in which mutations in the haemoglobin results in inability of the red blood cells to carry oxygen efficiently to the cells.
Based on the pedigree chart, the carriers of sickle cell are those that are half shaded black.
Two out of four of the offspring are shaded this way.
Percentage = 2/4 × 100% = 50%.
Therefore, the percentage of offspring who are carriers is 50%.
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Which type of intermolecular attractive force operates only between polar molecules?.
Answer:
Dispersion Forces are present inbetween any molecules
Why are the supraorbital height and thumb indexes important measurements in
comparing primates
The supraorbital height is an important measurement in comparing primates because they give information related to the size of the skull above the eyes.
What do you mean by Primates?Primates may be defined as those organisms which generally have flexible hands and feet with opposite first digits, good eyesight, and, in the higher apes, a highly developed brain.
As primates have an internal system, it is required to measure their skull size, thumb length, etc. So, the above techniques are used for measurement and comparison.
Therefore, it is well described above.
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You go for a run on Mount Elden. As you work to summit the peak, you notice your respiratory rate has increased drastically to supply your body with oxygen, and similarly, you know that your bronchioles have dilated. What caused this effect
Answer:
The reduction in oxygen as you advance upwards
The elements neon and argon are not reactive. Which hypothesis BEST explains this?
They are not stable atoms.
They are not readily available on Earth.
They tend to give up all of their valence electons easily.
They have the maximum possible number of electrons in their outermost shell.
Answer:
They have the maximum possible number of electrons in their outermost shell.
Explanation:
There are only a few elements that are less reactive than noble gases. The reason for this is that they are filled with electrons, which are referred to as valence electrons.
Essentially, the more electrons on the outermost shells, the less reactive.
Hope this helps! Let me know if you require further information...
- profparis
Which pollution type resulted in the most hypoxic waters? Support this with evidence from your data.
The pollution types that will result in most hypoxic waters is :
Fossil fuel burning and Agricultural runoff Hypoxic waterHypoxic waters are waters with low concentration of oxygen and this can be caused by the presence of excessive nutrients such as nitrogen. and also can be caused by layering. These are caused by saline gradients.
The excessive nutrients present in hypoxic water support the growth algal and eutrophication.
Hence we can conclude that The pollution types that will result in most hypoxic waters is : Fossil fuel burning and Agricultural runoff
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Options related to your question is missing hence I have provided a general answer to your question
Spores are produced in a pine cone-like structure by club mosses.
True or False?
Answer:
The answer is true If that is not the answer I am sorry
Explanation:
[tex]\bold{Heya!}[/tex]
→ Answer :-True.
Explanation :-Mosses have only one chloroplast per cell.
Hopefully This Helps ! ~
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[tex]\underline{Answer :}[/tex]
Jaceysan ~
3. Did trilobites and dinosaurs live at the same time?
Explanation:
No! After the dinosaurs died out, nearly 65 million years passed before people appeared on Earth.
Which process creates variation in genetic material?.
Answer:
the process of recombination
Explanation:
Meiosis is important because it ensures that all organisms produced via s3xual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination
Blood glucose begin to increase after a meal. As a result, glucagon levels must _________ while insulin levels must ________ in order to maintain metabolic homeostasis.
If glucose begin to increase after a meal, glucagon levels must decrease while insulin levels must increase in order to maintain metabolic homeostasis.
What is homeostasis?Homeostasis is the process by which a stable internal environment is maintained irrespective of the changes in external conditions.
The regulation of sugar level in the blood is one of the homeostatic responses. Insulin and glucagon are two hormones used to perform this task of blood sugar regulation.
Insulin is an hormone that reduces blood sugar level by stimulating the conversion of excess sugar to glycogen.Glucagon, on the other hand, increases blood sugar by converting glycogen back to sugar.Therefore, if glucose begin to increase after a meal, glucagon levels must decrease while insulin levels must increase in order to maintain metabolic homeostasis.
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What are two examples of nitrogenous wastes that are excreted by the kidneys?.
Answer:
ammonia,urea and uric acid
Anna runs 5 km in 20 minutes. What is her speed in kilometers per hour?
Answer:
15 km/h
Explanation:
5 km in 20 min
5km is 5000m and 20 min is 20×60 =1200s
5000÷1200= 25÷6 m/s
To convert m/s to km/h we multiple by 18/5
25÷6×18÷5
15 km/h.
Please give me brainliest. :-)
Is it true that The median is the middle number in a data set when the data are arranged in
numerical
Answer:
No
Explanation:
u must list the numbers from least to the greatest and than find the middle number so that will be the median.
Which of these anthropoid groups consists of primates who are mostly tree dwellers and whose forelimbs and hind limbs are about equal in length?.
Answer:
this was sooooo long ago i forgot how to do this
Explanation:
What is the purpose using lime water in release of carbon dioxide experiment
Limewater can be used to detect carbon dioxide. If carbon dioxide is bubbled through limewater then it turns from clear to cloudy/milky in color. This is why limewater used in a simple respirometer can show that more carbon dioxide is present in exhaled air compared to inhaled air.
Explain how placing cloned cells in nutrient broth to multiply relates to your overall goal of purifying the fluorescent protein
Placing cloned cells in nutrient broth to multiply relates to your overall goal because this favors the bacteria by providing an environment in which it can grow.
What is fluorescent protein?Generally, it part of a structurally homologous family of proteins that have the distinctive trait of being self-contained.
In conclusion, This favors the bacteria by providing an environment where growth, in order to encourage the production of more proteins for the study is possible.
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The sympathetic axons extend to which blood vessels of the kidney?.
Answer:
The hilus is the point of entry and exit of the renal arteries and veins, lymphatic vessels, nerves, and the enlarged upper extension of the ureters.
the diagram shows a human body system. Which of the following gives the main function of the system shown?
A. preventing and fighting diseases
B. carrying oxygen to cells and waste from cells
C. controlling the functions of the other body
D. breaking food into a usable form of energy for cells
(btw i don’t know if this is biology or chemistry)
Answer:
Explanation: D breaking food into a usable form of energy for cells
Which of the following is not an effector?
A. Skin B. Tongue C. Inner ear D. Diaphragm
Answer:
It should be C. inner ear
Explanation:
according to the web
Which of the following is a nonrenewable resource? a. hydropower b. biomass c. geothermal power d. coal please select the best answer from the choices provided a b c d
Answer:
Coal
Explanation:
Coal is classified as a nonrenewable energy source because it takes millions of years to form.
What material is too important to ever leave the nucleus? A. DNA B. Protein. C. Ribosomes D. Chromosomes
A. DNA is too important to ever leave the nucleus.
DNA material is too important to ever leave the nucleus. Hence the correct option is A.
DNA (Deoxyribonucleic Acid) is a crucial molecule found within the nucleus of cells. It carries genetic information and instructions necessary for the growth, development, functioning, and reproduction of living organisms. The information encoded in DNA determines an organism's traits, characteristics, and overall biological processes.
DNA's essential role in inheritance and cellular activities makes it too important to ever leave the nucleus. While other cellular components like proteins, ribosomes, and chromosomes are important, DNA is the primary genetic material that must remain securely stored within the nucleus.
Hence the correct option is A.
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In men, the primary source of androgens is the ____, while the ____ is/are where the remaining androgens are produced.
The primary source of androgens is the Testes.
The Adrenal gland is/are where the remaining androgens are produced.
The Adrenal Gland The Adrenal glands produces the androgens The Androgens are hormones that regulates the development and maintenance of male reproductive characteristics.The main source of the androgens is the testes.Learn more on Adrenal glands here :https://brainly.com/question/23487477
Describe what corn, dogs, and genes have in common
describe the damage which you can see and effects of the damage on crops by insects pest .
During apoptosis, which cellular organelle does the work of breaking up the nucleus and causing the cell to die?
Question 2 options:
Golgi apparatus
mitochondrion
ribosome
lysosome
Answer:
B) Mitochondrion
Explanation:
Mitochondria play a pivotal role in apoptosis. Apoptosis or programmed cell death can be initiated by both intracellular and extracellular signals. Mitochondria are responsible for mediating apoptosis initiated by intracellular signals. These are membrane-bound, rod-shaped organelles found in most eukaryotic organisms.