Answer:
Things that would/could affect the dolphins:
Driving away food sourcesOverfishing would cause a lack of food sourcesOverfishing could make them along with other species compete for food/survivalAccidents involving dolphins with boats and fishing equipmentExplanation:
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What two characteristics define an air mass?
Answer:
What two main characteristics are used to classify air masses? Temperature and humidity are two characteristics used to classify air masses.
What does atomic number tell you about an atom? * Number of electrons in the nucleus Number of protons and neutrons in the nucleus Number of protons in the nucleus Number of electrons in the electron cloud around the nucleus *NEED ANSWER QUICKLY*
Answer:
Number of protons in the nucleus
Answer:
Number of protons in the nucleus
Explanation:
With your partner, decide on a plan for investigating the effect of exercise on heart rate. The exercise could be running in place or doing jumping jacks. Record the steps below.
Pls I need the answer fast
Answer:
Materials
• Scrap piece of paper
• Pen or pencil
• Clock or timer that shows seconds or a helper with a watch
• Comfortable exercise clothes (optional)
• Calculator
Preparation
• Practice finding your pulse. Use the first two fingers of one hand to feel your radial pulse on the opposite wrist. You should find your radial pulse on the "thumb side" of your wrist, just below the base of your hand. Practice finding your pulse until you can do it quickly. (You can alternatively take your carotid pulse to do this activity, but be sure you know how to safely take it and press on your neck only very lightly with your fingers.)
• Measure your resting heart rate, which is your heart rate when you are awake but relaxed, such as when you have been lying still for several minutes. To do this, take your pulse when you have been resting and multiply the number of beats you count in 10 seconds by six. This will give you your resting heart rate in beats per minute (bpm). What is your resting heart rate? Write it on a scrap piece of paper.
• You will be measuring your heart rate during different types of physical exercises over a period of 15 minutes. Choose at least two different exercises. Some examples include jumping rope, lifting a two-pound weight, riding a bike, hula-hooping, walking, etc. Gather any needed materials. (If you want to make a homemade hula-hoop, steps for doing this are given in the activity Swiveling Science: Applying Physics to Hula-Hooping .) Do you think the activities will affect your heart rate differently? How do you think doing each activity will affect your heart rate?
Procedure
• Choose which exercise you want to do first. Before starting it, make sure you have been resting for a few minutes so that your heart is at its resting heart rate.
• Perform the first exercise for 15 minutes. While you do this, write down the number of beats you count in 10 seconds after one, two, five, 10 and 15 minutes of activity. (You want to quickly check your pulse because it can start to slow within 15 seconds of stopping exercising.) How do the number of beats you count change over time? How did you feel by the end of the exercise?
• Calculate your heart rate after one, two, five, 10 and 15 minutes of exercise by multiplying the number of beats you counted (in 10 seconds) by six. How did your heart rate (in bpm) change over time?
• Repeat this process for at least one other exercise. Leave enough time between the exercises so that your heart rate returns to around its normal resting level (this should only take a few minutes). How did you feel by the end of the second exercise? How did your heart rate change over time for this exercise?
• Take a look at the results you wrote down for this activity. Which exercise increased your heart rate the most? Which exercise increased your heart rate the fastest? Which exercise(s) elevated your heart rate to the target heart rate zone (50 to 85 percent of your maximum heart rate, where your maximum heart rate is 220 bpm minus your age)? Do you notice any consistent patterns in your results?
• Extra: Try this activity again but test different physical exercises. How does your heart rate change when you do other exercises? How are the changes similar and how are they different?
• Extra: Measure your heart rate while lying down, while sitting down, and while standing. How does your heart rate change with body position?
• Extra: Repeat this activity with other healthy volunteers. How does their heart rate compare to yours? How does their change in heart rate while exercising compare to how yours changed?
• Extra: Try this activity again but vary the intensity of your exercise. What intensity level elevates your heart rate to 50 percent of its maximum heart rate? What about nearly 85 percent of its maximum? Be sure not to exceed your recommended target heart rate zone while exercising
Explanation:
If you did a moderately intense exercise, such as walking, you may have seen an initial jump in your heart rate (where your heart rate falls within the lower end of your target heart rate zone within about one minute of exercise), but then your heart rate only slowly increased after that. After 15 minutes, you may have reached the middle of your target heart rate zone. To reach the upper end, people usually need to do a moderately intense exercise for a longer amount of time (such as for 30 minutes). If you did a more strenuous exercise—hula-hooping, for example—you may have seen a higher initial bump in your heart rate (such as reaching the middle of your target heart rate zone after just one minute of exercise), and then your heart rate stayed about the same for the remaining 14 minutes of exercise. Overall doing a more strenuous exercise generally raises a person's heart rate faster compared to doing an exercise that is only moderately i
Question 3 (2 points) According to Newton's 2nd Law, Force equals mass times acceleration. Sidney Crosby has a mass of 91kg and Claude Giroux has a mass of 85kg. If they both are accelerating at 20m/s2, which person will have the greater force when they collide? A.Sidney Crosby
B.Claude Giroux
C.They both will have the same force
D.Not enough information is given.
Answer:Sidney Crosby
Explanation:
List down 5 evidence of exogenic processes and show how it affects or how it is affected by human activities.
Answer:
Mass wasting has drastic effects on human and animals life in the form of landsliding , earthquakes . Deposition is the pres in which sediments , rocks and soil are added land mass . A positive effect of deposition is that it creates new land . And negative effect is it takes away new lands .
The five (5) evidence of exogenic processes on Earth's surface include the following:
1. Weathering.
2. Stripping.
3. Erosion.
4. Mass wasting.
5. Deposition.
Exogenic processes can be defined as the processes that occur at or near the surface of planet Earth due to the action (influence) of exogenic forces or geomorphic agents.
The five (5) evidence of exogenic processes on Earth's surface include the following:
1. Weathering: the removal of various minerals from rocks causes depletion in oil and gas reserves that may be available for human consumption.
2. Stripping: it involves the removal of essential chemical elements and components from precious stones and landform such as a mountain.
3. Erosion: this causes flooding and washing away of various soil nutrients and as such affects agriculture.
4. Mass wasting: it moves rock debris, soil nutrients, and regolith downward, which are substances that are useful for certain human activities such as during mining.
5. Deposition: it is a consequence of erosion and it result in the laying down of sediment on a landform or landmass.
This sometimes make the foundation of buildings stronger to withstand stress.
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Explain enzyme-substrate specificity.
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substrate specificity. The active site of an enzyme is very specific to its substrates as it has a very precise shape. This results in enzymes being able to catalyze only certain reactions as only a small number of substrates fit in the active site. This is called enzyme-substrate specificity.
Answer:substrate specificity. The active site of an enzyme is very specific to its substrates as it has a very precise shape. This results in enzymes being able to catalyze only certain reactions as only a small number of substrates fit in the active site. This is called enzyme-substrate specificity.
Explanation:Enzymes and substrates share specificity in that an enzyme will only react with a specific substrate • This is because the active site is complementary in both shape and charge to a given substrate • The model by which this is known is ‘lock and key’ as the substrate is a precise structural fit for the enzyme, much like a lock and key • When the enzyme and substrate bind, they form an enzyme-substrate complex, before the substrate is catalytically converted into a product
How might an error during transcription affect the protein that is produced?
Answer:
the protein might be unable to function
PLEASE ANSWER!!! TIME LIMITED!!! Which tool would be best for monitoring how land use changes over time?
A. pH meters
B. Satellite images
C. Turbidity charts
D. Bioindicators
Answer:
B. Satellite
Explanation:
It has the angles for above and it shows how the land changes through time
how does climate and vegetation vary with latitude and elevation?
Answer:
Climate and vegetation vary with latitude and altitude of an area. Latitude measures distance from the equator; altitude measures elevation above sea level. ... Deserts have little precipitation and little vegetation. They are found in tropical, temperate, and Polar Regions.
The climate and vegetation may significantly vary with the latitude and elevation. This is because as elevation increases the temperature decreases gradually that do not favor the actual growth of vegetation.
What is Climate?Climate may be defined as a type of weather conditions that are persuading in any geographical location for a long period of time. In a more simple sense, it is characterized as the long-term pattern of weather in a particular area.
Latitude estimates the distance from the equator part of the earth and goes through the tropical, temperate, and colder regions of the earth. The vegetation is typically reduced with increasing the altitude or elevation with respect to the sea level.
It may also be noticed that the vegetation may alter with respect to the geographical location of the whole earth. It was never found to be completely absent.
Therefore, the climate and vegetation may significantly vary with the latitude and elevation.
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please answer!
help me please its due in a hour
Answer:
The correct answer is - in the sickle-cell hemoglobin is the replacement of glutamic acid with valine in the β-globin amino acid chain.
Explanation:
Sickle cell anemia has a mutant gene in which that produces has valine amino acid instead of glutamate in the hemoglobin protein. In the given question the structure of the protein has only one difference that is the replacement of the glutamic acid in normal hemoglobin to valine in the β-globin amino acid chain in the mutant protein.
Valine 6 (beta chain) binds to a different hydrophobic patch (on the alpha chain and causes the disease in sickle cell anemia cases.
What two components are often found as part of
an enzyme?
Answer:
The two components which are often found as part of an enzyme are Active site and protein. Proteins are referred to as macromolecules or macromolecules which consists of more or one of a chain of amino acid residue. They do perform an array of functions which are within organisms.
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In which direction is the wind likely to blow in the picture?
WATER
LAND
A. From the ocean to the land
B. From the sun to the land
O O O O
C. From the land to the ocean
D. From the land to the sun
Answer:
From the ocean to the land. just took the quiz.
Explanation: a p e x
During the day, the air above land in coastal regions warms up more quickly and starts to rise, hence option A is correct.
What is the direction of the wind?As the warm air rises, a low-pressure region develops on the surface, enabling air from the sea to enter. As a result, the wind blows from the sea to the land during the day.
Predominant winds often blow east-west rather than north-south, especially in the afternoon when the land is being heated by the sun to its maximum.
the Coriolis effect causes wind systems to twist counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere most frequently in the spring and summer.
Therefore, because of the greater temperature differences between the ocean and nearby land, hence option A is correct.
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Help plzzzzzzzzzzzzzzzzz
Answer:
A) It helps to separate the chromosomes
Explanation:
what are the briefly information about plant cell
Answer:
Plant cells are the basic unit of life in organisms of the kingdom Plantae. They are eukaryotic cells, which have a true nucleus along with specialized structures called organelles that carry out different functions. Plant cells have special organelles called chloroplasts, which create sugars via photosynthesis.
In the 1520s, the Spanish explorer Cortes and his armies carried the virus that causes smallpox to NorthAmerica and South America.
The graphs above illustrate the death rate among both Europeans and American Indians from smallpox at that time. Which of the following statements best explains the difference in death rates?
F. People in Europe were healthier than American Indians.
G. Antibiotics were available in Europe but not in North America.
H. American Indians had never been exposed to the smallpox virus, so resistant individuals had not yet become common.
J. American Indians were exposed to a virus that was different from the virus for smallpox in Europe.
Answer:
I can't see the graph but I believe that the answer is H
What is the role of the nucleus in plant and animal cells?
O
A. It stores the genetic information for the cell.
B. It serves as a boundary for the cell.
o
C. It produces energy for the cell.
O
D. It stores waste for the cell.
Answer:
Explanation:
It’s A I’m pretty sure
A person infected with the human immunodeficiency virus (HIV) may not have any symptoms for an
extended period of time. This information suggests that the reproductive cycle of the HIV virus is —
1. lysogenic, because the virus develops over a long period of time
2. lytic, because the virus causes an autoimmune disease and eventually death
3. lysogenic, because the virus primarily affects older people
4. lytic, because of the quick onset of symptoms after infection
10 POINTS QUESTION: Objects of different masses are suspended from a height. Which combination of features will have the greatest gravitational potential energy?
A. high mass and high height
B. high mass and low height
C. low mass and low height
D. low mass and high height
Answer: high mass and high height
Explanation:
The gravitational potential energy is refered as the potential energy that has to do with the energy in a particular object due to the height of that object.
With the above explanation, when objects that have different masses are suspended from a height, the one that will have the greatest gravitational potential energy will be the one with a high mass and high height.
Therefore, the correct option is A.
pls help I AM ON A TIMERR PLEASE
Answer:
They will move inside the cell cos the concentration inside the cell is too low
Explanation:
hope it helps
Answer:
2nd option
Explanation:
5
Recent studies looked at how fog may play a role in the water transport of the coastal
redwoods. Which is true?
A
The fog helps to replenish vital ground water.
B
The fog lowers the evaporation rate at the needles.
C
The fog can decrease the energy demand of the trees.
D
All of the above
2. True or false. Trees have to attract bark from other sources. *
O pol
True
False
Head injuries and spine injuries are very worrisome because:
A. Nerve cells go through cell division frequently
B. Skin cells go straight from First Growth to Synthesis phase
C. Skin cells go through cell division frequently
D. Nerve cells stay in G Zero phase after the first growth
Name the nitrogen bases that pair up to make the rungs of the DNA ladder.
Answer:
Two of the bases are purines- adenine and guanine. The pyrimidines are thymine and cytosine.
A common running-related inflammatory injury of the extensor muscles and
surrounding tissues of the lower legs is called
O shin splints
O muscle sprain
O myopathy
tendinitis
Answer:
Shin Splints is the answer to your question
whitch of the following nutrients is primarily used for building and repairing of demaged cells and tissues
Answer: protein ..i hope this helped!
Explanation: protein is a nutrient used to make and repair our body cells like blood and muscle cells.
Answer:
Explanation:
he is correct
Make a list of the energy carriers involved in the Krebs cycle. Include their names before and after they accept the electrons.
Thank you!
Answer:
12
Explanation:
HELPPPP PLEASESSSSS and please make sure you are right
Answer:
it is d
Explanation:
James examines a cell from an aloe plant and a cell from an owl feather. Which structure is found only in the cell from the aloe plant?
O A. chloroplast
OB. membrane
O C. mitochondrion
O D. nucleus
The chloroplast will only be found inside the Aloy plant while other structures will be shared by both cells. Option A is correct.
Difference between Plant and animal cells:Both plant cell animal cells are eukaryotic cells, but both have some unique structures.Plants have a cell wall but animals just have a cell membrane.A plant cell has a chloroplast for photosynthesis while an animal cell does not have a chloroplast.Since owl is an animal and Aloy is a plant
Therefore, the chloroplast will only be found inside the Aloy plant while other structures will be shared by both cells.
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Explain how greenhouses modify the environment to improve growing
conditions for plants?
