Answer:
The oxygen did not build up in the atmosphere for a long time, since it was absorbed by rocks that could be easily oxidized (rusted). To this day, most of the oxygen produced over time is locked up in the ancient "banded rock" and "red bed" rock formations found in ancient sedimentary rock.
Directions: Together with your parents and siblings, create a simple irrigation system in your house that will help in growing your plants. Watch the video on the link below and use the knowledge that you gained from the lesson. After doing the activity answer the question: "How did you apply the knowledge you gain from the video and from the lesson in creating your own irrigation system?
Knowledge and understanding
20
Students showed excellent knowledge about the topic
10
Students showed limited knowledge about the topic
5
Students have very limited knowledge about the topic
The video with the necessary information to answer the question is missing. So, an irrigation system definition and example will be given.
An irrigation system is a structure made of tubes, hoses, and sprinkles; Its function is to water plants or crops with the correct amount of water and in an evenly way.
A simple irrigation system that will help grow plants at home is a plastic bottle with small holes connected to a hose with a tube that can lead the water from the hose to the bottle without losses. The bottle with its holes works as a sprinkler.
In conclusion, irrigation systems are in lawns, fields, or gardens, and they water the plants evenly so that they can grow. There are many types, but we can build a simple one with a bottle.
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Write the function of nucleus in the cells of organism
Answer:
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.
Explanation:
HOPE IT HELPS...............Sedimentation accumulation found in bodies of water can be the result of _______. A. Fertilizer runoff b. Pesticides and herbicides c. Erosion from agricultural practices d. All of the above.
Answer:
All of the above.
Explanation:
All of these can contribute to sediment accumilation in bodies of water.
Sedimentation accumulation found in water bodies can be the result of fertilizer runoff, pesticides, pesticides, and erosion from agricultural practices. So, the correct option is D.
What do you mean by Sedimentation accumulation?The sedimentation accumulation may be defined as a process of gathering sediments into the rocks, and water bodies, and increasing their actual mass.
Sedimentation accumulation may be carried by the runoff of fertilizers, pesticides, and insecticides. It also occurred due to the process of soil erosion that takes place during agricultural practices.
Therefore, the correct option for this question is D.
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What is photosynthesis?
Answer:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Which term refers to the pyramidal cells of the precentral gyrus whose fibers end in the nuclei of the brainstem
what type of fossil forms when the impression from the remains of an organism is filled in with soil and hardens into the shape of the original organism?
Answer:
casts
Explanation:
casts are formed by filing the cavity of minerals collected from the surrounding
Answer:
i belive the answer is "casts"
Explanation:
True/False: In a neuron at rest, the concentration of sodium ions is 14 times higher outside the cell than inside the cell.
Answer:
true
Explanation:
The sodium and chloride ion concentrations are lower inside the cell than outside, and the potassium concentration is greater inside the cell. These concentration differences for sodium and potassium are due to the action of a membrane active transport system which pumps sodium out of the cell and potassium into it.
When is the kinetic energy of a pendulum the least?
Question 5 options:
Half the distance on the path traveling back down.
On the path beginning the upwards swing.
At the bottom of the swing.
At the top of the swing where it briefly stops before changing direction.
Answer:
The answer is D. At the top of the swing where it briefly stops before changing direction.
Explanation:
When the pendulum is either at its far right or left position, the bob is at rest and therefore its kinetic energy is equal to zero- making it the lowest point of kinetic energy during the whole process.
Answer:
The answer is C
Explanation:
because when your on the swing the most kinetic energy is where you start to go to the upwards part right when the drop happens
it allows you to swing up very high making the option C correct
The element lithium has two common isotopes: Li–6 and Li–7 If the average atomic mass of lithium is 6.94004 u, determine its percent isotopic abundances. Step by step and explain.
First we need to determine the average atomic mass of these isotopes.
The atomic masses of Lithium-6 and Lithium-7 are 6.0151amu and 7.0160amu respectively.
Now that we have that, we need to set up the relative abundance problem.
We can do that using the formula (M1)(x) + (M2)(1-x) = M(E)
Because you asked for details, I'll explain what each variable stands for-
M1 = the mass of one isotope
x = the relative abundance
M2 = the mass of the second isotope
M(E) = the atomic mass of the element from the periodic table
Therefor all we do now is plug in our respective variable.
M1 = 6.0151amu (Lithium-6)
x = unknown relative abundance
M2 = 7.0160amu (Lithium-7)
M(E) = 6.94004amu
Now the formula plugged in will look like this:
6.0151x + 7.0160(1-x) = 6.94004
Now doing some quick math, we can determine that x=0.07589
For the last step we need to find the percent abundance of each element, which is quite simple. We take X and multiply it by 100 to find Lithium-6, so 0.076 x 100 = 7.6%
and since then we use 1 - X, so 1 - 0.076 = 0.924
We take that and also multiply it by 100, so 0.924 x 100 = 92.4%
Conclusion:
The abundance of the Lithium-6 isotope is 7.6%, and the abundance of the Lithium-7 isotope is 92.4%.
Please ask if you have any questions and I hope this was helpful!
The purpose of the foot of a molluscs is:
Answer:
Foot of a molluscs is used for locomotion and anchorage, and varies in shape and function, depending on the type of mollusk under study.
Which type of tooth is used to fragment foods into ever-smaller chunks by shearing, slicing, crushing, and griding
how many chromosomes are in a typical human body cell?
Answer:
46 chromosomes
Explanation:
There are 46 chromosomes in a typical human body cell. (23 pairs of chromosomes)
how many chromosomes are in a typical human body cell?
Answer:-46 chromosomes
Explanation:-The normal number of chromosomes in every cell of a typical human body is a total of 46 chromosomes, or 23 pairs.
What might scientists learn about the evolution of human behavior from studying cognitive behavior in animals?
Answer:
When we gain insight into animal behavior, we are in a stronger position to understand vexing conservation problems, such as how to save endangered species, assess environmental quality, design nature preserves, and evaluate the importance of human-related threats to survival in otherwise fit animals.
Explanation:
Please help quick!
How are Protista different from Bacteria?
a) Protista have nuclei and Bacteria do not.
b) Protista reproduce asexually and Bacteria do not.
c) Protista are heterotrophic and Bacteria are not.
d) Protista have cilia and Bacteria do not.
I'll mark brainliest if correct!
Answer:a
Explanation:
Which equations are balanced? Select all that appl
Answer:
B
D
F
Explanation:
which population should display the highest growth rate?
List reasons you would or would not be concerned about eating genetically modified food
Answer:
Reasons I would be concerned about eating GMO foods:
Explanation:
The FDA declaring them to be "substantially equivalent" to non-GMO foods amid controversy that adequate scientific testing had not been done.
Michael Taylor being in the FDA when "substantial equivalence" was declared. Michael Taylor was a Monsanto employee before taking the position at the FDA.
The technology itself of taking a gene from one species and inserting it into another species (horizontal breeding). While that may be perfectly harmless it is new technology that many believe has not been proven to be safe.
Greater amounts of pesticides being used on GMO crops, which means more pesticides may be getting in our foods.
Crops that are engineered to produce an insecticide in the plant itself possibly having harmful health effects on us. There is some evidence that this may be happening.
the main enzyme involved in linking individual nucleotides is
Answer:
The primary enzyme involved in this is DNA polymerase which joins nucleotides to synthesize the new complementary strand.
The viral envelope closely resembles the ______________________. a. prokaryotic cell wall. b. capsomere c. eukaryotic cytoplasmic membrane. d. eukaryotic cell wall.
The viral envelope closely resembles the eukaryotic cell wall. That is option D.
The virus is a type of microorganism that contains DNA (Deoxyribonucleic acid) and surrounded by a protein coat.
There are different types of viruses which include:
Double stranded DNASingle stranded DNADouble stranded RNASingle stranded RNAThe parts of a virus include:
the protein coat (viral envelope)DNA (Deoxyribonucleic acid)The viral envelope is the external part of the virus, which is made up of proteins and lipids, and is capable of protecting the virus from harm.
Also the cell wall of the eukaryotic cell wall also protects these organisms from external harm.
Therefore, the viral envelope closely resembles the eukaryotic cell wall.
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What two elements make up the majority of the Earth's atmosphere?
Answer:
nitrogen and oxygen
Explanation:
Nitrogen and oxygen account for 99 percent of the gases in dry air, with argon, carbon dioxide, helium, neon, and other gases making up minute portions.
where is the inherited information that determines a cell’s function?
Answer:
Genes
Explanation:
The hereditary information (inherited information) is contained in genes, located in the chromosomes of each cell.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
the tendency of certain alleles to be inherited together is called
Answer: Genetic Linkage
Explanation:
It's during the meiosis stage of sexual reproduction.
What type of organism in the ocean food web is the most numerous
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Producers are described as autotrophic, which means they are able to make their own food. Just like producers on land, producers in the marine environment convert energy from the sun into food energy through photosynthesis. Phytoplankton are the most abundant and widespread producers in the marine environment
hope it helps ❤~
Answer:
above answer may help youOne variable not mentioned in the description of the experiment that could affect the results of the investigation is reduced canopy cover. Describe the effect that canopy cover would likely have on the results of the investigation.
The canopy cover can affect the results of an investigation because a higher canopy cover is accompanied by a decrease in the availability of sunlight.
The canopy cover is the proportion of the ground covered by vegetation when it is viewed from vertically above the planted area.
The level of canopy cover affects light availability on the ground and also its microclimate, thereby this feature can also alter any biological experimental procedure by affecting the level and type of biodiversity.
A reduced canopy cover may alter any experimental outcome by increasing the energy/light input in the ground cover stratum, thereby likely affecting biodiversity.
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The main reproductive organ of the plant is the
Hello!!
.Stamen.
Structure. As a plant's reproductive part, a flower contains a stamen (male flower part) or pistil (female flower part), or both, plus accessory parts such as sepals, petals, and nectar glands (Figure 19). The stamen is the male reproductive organ. It consists of a pollen sac (anther) and a long supporting filament.
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Which of the following adaptations found in animals in deciduous forests protects against predators? a. Fat storage b. Migration c. Hibernation d. Camouflage.
Answer:
D
Explanation:
Answer:
d i just took the test
Explanation:
Which type of macromolecule has the function of storing and transmitting hereditary information or genetic information?
Answer:
Nucleic acids are key macromolecules in the continuity of life. They carry the genetic blueprint of a cell and carry instructions for the functioning of the cell.
Explanation:
if am wrong plz forgive me but if I'm right brainly me plz（＾∀＾●）ﾉｼ
a person taking a glucose test is usually told to fast prior to the test. why would fasting be necessary?
Match the color components of light with the resulting color of light
A. Yellow
B. White
C. Magenta
D. Cyan
____1. Red + Green
____2.Red + Blue
____3. Green + Blue
____4. Red + Green + Blue
Answer:
» 1. A. Yellow » 2.C. Magenta» 3.D. Cyan » 4.B. WhiteSecondary nucleus is
a) Haploid
b)Diploid
c) Triploid
d) Tetraploid
The correct answer is option B. Diploid
The secondary nucleus is formed by the fusion of two polar nuclei which is a diploid.