Answer:
The correct answer here is A
A Foucault pendulum provides evidence that
Earth
(1) orbits the Sun
(2) has a nearly spherical shape
(3) is tilted on an axis
(4) spins on an axis
Answer:
The answer is 4) spins on its axis if it is wrong then tell me tho oaky
City water management is analyzing water samples from the local river for water pollutants that could be toxic to humans if found in drinking water. Their collection data is below.
Samples
Location
Nitrates
Carbamates
1
Two miles downriver from drinking water uptake facility
12 mg/L
0.06 mg/L
2
One mile downriver from drinking water uptake facility
9 mg/L
2 mg/L
3
One mile upriver from drinking water uptake facility
8 mg/L
0.04 mg/L
4
Two miles upriver from drinking water uptake facility
10 mg/L
0.05 mg/L
Toxic levels reached when nitrates are greater or equal to 10 mg/L and/or carbamates are greater or equal to 0.04 mg/L.
Which sample location(s)have nitrates or carbamates at toxic levels that could be collected by the water uptake facility?
Samples 1, 2, 4
Samples 1 and 4
Samples 3 and 4
Only sample 4
Aquatic toxicity is found in the four sample sites. But since the water uptake facility collects water from upriver, the correct option is C. Samples 3 and 4.
What is aquatic toxicity?Aquatic toxicity is the property of a substance to causes harmful effects on aquatic or water-dependent organisms.
Aquatic toxicity can be either,
Sharp ⇒ nocive effects after a short exposition periodCronic ⇒ nocive effects after a long exposition periodAquatic toxicity depends on the substance type and its concentration in water.
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According to the problem statement, toxic levels are reached when
nitrates are greater or equal to 10 mg/Land/or
carbamates are greater or equal to 0.04 mg/L.Sample 1 ⇒ Two miles downriver from drinking water uptake facility
Nitrate → 12 mg/L ⇒ > 10 mg/L ⇒ toxic Carbamate → 0.06 mg/L ⇒ > 0.04 mg/L ⇒ toxicSample 2 ⇒ One mile downriver from drinking water uptake facility
Nitrate → 9 mg/L ⇒ < 10 mg/L ⇒ not toxic Carbamate → 2 mg/L ⇒ > 0.04 mg/L ⇒ toxicSample 3 ⇒ One mile upriver from drinking water uptake facility
Nitrate → 8 mg/L ⇒ < 10 mg/L ⇒ not toxic Carbamate → 0.04 mg/L ⇒ = 0.04 mg/L ⇒ toxicSample 4 ⇒ Two miles upriver from drinking water uptake facility
Nitrate → 10 mg/L ⇒ = 10 mg/L ⇒ toxicCarbamate → 0.05 mg/L ⇒ > 0.04 mg/L ⇒ toxicThe four sample sites have toxic levels. Both of the substances concentrations or at least one of them reaches the toxic level at each site.
However, since water uptake facility can colect water from upriver, we only need to consider these sample sites.
The correct option is C. Samples 3 and 4.
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Answer:
b
Explanation:
Which substance is a product of glycolysis?
Answer:
Outcomes of Glycolysis
Glycolysis produces 2 ATP, 2 NADH, and 2 pyruvate molecules: Glycolysis, or the aerobic catabolic breakdown of glucose, produces energy in the form of ATP, NADH, and pyruvate, which itself enters the citric acid cycle to produce more energy.
Explanation:
A specific type of bacteria increases exponentially with a growth rate of r=0.4 per hour. Assume there are 16 bacteria present at t=0. When will the population reach 10000?
The population would reach 10000 at the time of 25,000 hours
Calculation of exponential growth rateThe exponential growth rate of the bacteria = 0.4 /hr
The number of bacteria at time 0 = 16 bacteria
The time for the bacteria population to reach 10000 = ?
But if , 1 hour = 0.4 bacteria
X hour = 10000
Make X the subject of formula;
X = 10000/0.4
X= 25,000 hours
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Please help me with this
Answer:
DNA: thymine, deoxyribose, large molecule, stay in the nucleus
RNA: single strand, uracil, leave the nucleus, small molecule
Explanation:
As for single strand, it's well known that DNA has two strands while RNA has one.
For the description that asks about thymine, you have to remember the nucleotide bases in DNA and RNA. Remember that DNA's bases are A, C, T, and G, while RNA has all the same bases except for T (which stands for thymine). In RNA, the thymine is replaced with uracil, usually abbreviated as U. That sorts out the descriptions that ask for thymine and uracil.
To figure out the one that asks for deoxyribose, remember that DNA has deoxyribose and RNA has ribose (hence why DNA is deoxyribonucleic acid while RNA is just ribonucleic acid.)
For the large molecule/small molecule ones and the questions that ask about the size of the molecule, remember that DNA is a way bigger molecule than RNA and that RNA is small enough to leave the nucleus, while DNA is much too valuable to the cell to be able to leave the nucleus.
Hope this helps!
Summarize the protein synthesis pathway:
Answer:
Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation.
Explanation:
Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus. It includes three steps: initiation, elongation, and termination.
why do blue whales explode when they die
Answer:
Gas build up inside the body.
Explanation:
When a blue whale dies, the body starts decomposing, and the gases cannot escape, resulting into the explosion.
Answer:
A decomposing whale carcass generates gases which build up inside their stomach and large internal organs. This then causes them to expand, but whale skin and blubber are tough so the gases become trapped inside. Whales can apparently hold in gasses, or the “death burp,” for long periods after they die, sometimes resulting in massive and extremely messy explosions.
Explanation:
WHy do the United States had a federal type of government
Answer: Is the explanation
Explanation: To keep the U.S under control so the other countries don't attack
and also collect tax.
The diagram shows a person holding a bow and arrow.
A person holds a bow and arrow with the arrow pulled back.
Which will most likely increase the kinetic energy in this system?
pulling farther back on the string
releasing the string
holding the arrow higher
decreasing the mass of the arrowm
Answer:
pulling further back on the string
Explanation:
I chose that because as for me answer 2 and 3 don't make sense but as for answer four I don't think that when you decrease the mass of the arrow this will increase the kinetic energy because for it to move faster I'll have to pull the string harder or to enlarge it ,so to increase the kinetic energy it is just determined by how I pull that string ."have I enlarged it or it is still loose."
Which of the following is the correct pairing of the psychological perspective and therapy treatment?
o Humanism and Psychotherapy
o Psychodynamic and Token Economy
o Behaviorism and Client-Centered Therapy
o Cognitive and Rational Emotive Therapy
Answer:
humanism and psychotherapy
Use the arrow on the picture and the scale to estimate the length of the chloroplast
Answer:
where's the pic?
Explanation:
What is known about colony
collapse disorder?
O A. Mites are the sole cause of colony collapse disorder.
O B. Invasive species are implicated in colony collapse disorder.
O C. The factors responsible for colony collapse disorder are well known.
O D. Several factors are likely
contributing to colony collapse
disorder.
Answer:
O A. Mites are the sole cause of colony collapse disorder.
William Shakespeare's writings are thought to be a perfect example of which of the following? A. The Reformation B. The Enlightenment C. The Renaissance
Explanation:
The Renaissance because and The enlightenment
Reformation is a religious revolt
which situation show a nonrenewable resource in use ?
Answer:
Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced, which is a major problem for humanity as we are currently dependent on them to supply most of our energy needs.
Explanation:
I think it will be the answer
name the level of organisations
Answer:
organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
Explanation:
Some of the most important nutrients in the ocean include:
A. Nitrates, carbonic acid, and oxygen.
B. Carbon dioxide, oil, and gold.
C. Phosphate, phytoplankton, and potassium.
D. Phosphates, nitrates, and carbon
Which of these agencies classifies hazardous materials into 9 primary classes?
A: Department of Transportation (DOT)
B: Endangered species Association (ESA)
C: National park service (NPS)
D: U.S. forest service
Answer:
A: Department of Transportation (DOT)
Explanation:
Seems like DOT does it.
https://www.fmcsa.dot.gov/regulations/enforcement/nine-classes-hazardous-materials-yellow-visor-card
https://www.faa.gov/hazmat/what_is_hazmat
Answer:
D.It is theDepartment of Transportation(DOT)
Which of the following is MOST likely to be a direct environmental effect of air pollution?
A: Extended visibility
B: Acid deposition
C: Increased turbidity
D: Eutrophication
A: Extended visibility
B: Acid deposition
C: Increased turbidity
D: Eutrophication
The correct is B
What type of friction holds an object in place and gives you traction?
A) static friction
B) kinetic friction
How is genetic information stored in a cell?
They are stored in the cell in form of chromosomes which contains the DNA which are formed of the Nitrogen bases, phosphate group and sugars .
Nitrogen bases are Adenine , Cytosine , thymine , Guanine.
pair of three bases results in the formation of amino acids which join together to form proteins. Proteins in return act as a information carriers , which carry information to the cell to use the information stored in the DNA
Brain is most active during which portion of sleep cycle
The Brain is most active during REM sleep portion of sleep cycle. This portion of sleep cycle usually occurs for two hours, and when monitored, it is discovered that brain activity is mostly dynamic at this stage.
What is REM sleep?REM stands for Rapid Eye Movement and this is a stage in the sleep cycle of mammals and birds characterized by random rapid movement of the eyes.
Basically, sleep is divided into four major stages which include
AwakeLightDeepREM sleepThe first three stages of sleep are regarded as Non-Rapid Eye movement (NREM) stages. The first three stages comprises of about 75% of the total sleep time.
This movement of the eyes is followed by minimal muscle tone throughout the body, and the higher probability of the sleeper to dream vividly.
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Human blood is considered a multiple allele trait meaning an individual can have either (A,
B, AB, or O). Which phenotypic probability would be expected between a cross of a male
with Type O and woman with Type AB?
a. 50% Type A, 50% Type B
. b. 50% Type A, 50% Type O
50% Type AB, 50% Type 0
d. 50% Type B, 50% Type O
c.
Answer:
A. 50% Type A, 50% Type B
Explanation:
To answer this we can draw a punnett square.
Since o if recessive, it can only be expressed if it is not masked by a dominant allele. Therefore the male with type O blood has the genotype oo. A and B are co-dominant, so the woman has genotype AB.
_ | A | B
o |Ao | Bo
o | Ao | Bo
Since A and B are dominant alleles, they will mask the o allele. Therefore genotype Ao will be a Type A phenotype, and genotype Bo will be a Type B phenotype.
Therefore, the phenotypic probabilities for this cross is 50% Type A, 50% Type B. Hence, the answer is A.
Hope this helped!
In the 1950s tall smokestacks for large factories were constructed and pollution was released higher in the atmosphere where winds were stronger. The motto during this time was "dilution is the solution to _______."
A: Motion
B: Pollution
C: Evelution
Answer:
Pollution
Explanation:
What is Dilution
Dilution is the process of decreasing the concentration of a stock solution by adding more solvent to the solution. The solvent added is usually the universal solvent, known as water.What is pollution
the addition of undesirable material into the environment as a result of human activities.What is motion
when an object changes in position over time relative to a reference point. speed.What is Evolution
Evolution is change in the heritable traits of biological populations over successive generations.What is a front?
-Air Masses and Fronts 9th grade science-
HELP ASAP
A air front is typically a transition zone between two unique temperature/humidity. Usually, one front would push the other away (typically if summer is hot, then the warm front will push away the cold, and for the winter, if it's cold, it's the opposite).
A stationary front, on the other hand, is when there is no change in the over all temperature for the region(s), and a occluded front is when the fronts mix, where it is followed by rain and a equillibrium of the temperature, whether to a warmer or cooler overall temperature.
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2.Imagine that you are a nitrogen molecule. Write a story about the
journey you take as you travel through the nitrogen cycle. Include
the following in your story:
A description of your trip through the cycle including (1) where
you went, and (2) how you got there;
A description of why your journey will never end;
Include as many of the following terms in your story as well:
Atmosphere
Bacteria
"Fixing"
Nitrogen
Consumers
Producer
Decomposition
Fertilizer
Manure
Runoff
Answer:
Water moves from the ground or oceans into the atmosphere through a process called evaporation. It's a process that happens on a molecular level when the molecules of water are really energized and rise into the air. Now you've got water in the air and water on land. Organisms all over the Earth need water to survive.
Explanation:
please brainless
This photo shows a kind of reproduction.
Which statement describes the result of this type of reproduction?
Two parents are required to produce the offspring.
Each offspring has a different combination of genes.
Parents make reproductive cells with only half of their genes.
The offspring have identical genes.
Answer:
I don't know
Explanation:
I think the answer???
Suppose that an elephant with the genotype EEFfggHh reproduces with an elephant with the genotype eeFFGgHh. What is the prob256ability that a baby elephant (called a calf) would have the genotype EeFFGghh?
A. 0
B. 1/32
C. 1/256
D. 1/16
Explantation appreciated!!
According to the theory of natural selection, what would happen to a species of lizards when a new predator is introduced into the environment where lizards live?
Which direction do molecules move across a membrane based on concentrations inside and out of the cell?
“*•Pls help me!!!•*”
What resources do scientist use to predict when and where future natural hazards may occur?
Answer:
See below ~
Explanation:
Scientists map natural hazards caused by catastrophic events to predict future events. They use many forms of technology as well such as :
weather tracking technologydoppler radarfor collection of data