Biology

Due to its location, Hawaii does not have very many land birds. The Hawaiian honeycreepers are a favorite for many ornithologists. There are over 50 species of honeycreepers that can all be traced back to one ancestor. The level of diversity in an ecosystem can be determined by the frequency of speciation and extinction.a) Describe speciation and identify two possible prezygotic barriers of the Hawaiian honeycreepers that contribute to speciation.b) If the Hawaiian honeycreepers became extinct, explain how the newly available niches could lead to speciation.
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A segment of dna/chromosome containing the instructions for building a protein which will result in a trait is called a ___
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Instructions: Use the data table that shows the estimation of the daily resting energy expenditure (REE) toexplore how calorie requirements change as a person gets older. Follow the steps to calculate the REE for aperson over time. Record your calculations in the table,1. Decide to calculate the REE for a male or female,2. Choose an adult weight.3. Calculate the REE for the adult from age 18-29. 30-60, and over 60. Assume the adult maintains the samebody weight at each age.(Score for Question 1:of 1 point)1. Male or femaleAnswer:of 1 point)(Score for Question 2:2. WeightAnswer:Table(Score for Table:___ of 18 points)Use the Table of the Estimation of the Daily Resting Energy Expenditure (REE) to determine the calculation usedfor each age range.Questions1. How does the REE change as a person?2. What do these results indicate about how the bodys metabolism changes over time?
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what is the total amount of carbon added to the atmosphere from soil and the burning of fossil fuel
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Erica uses a door knob to open a door. A door knob is an example of a wheel and axle. The knob of the door is the wheel and the shaft is the axle. As Erica turns the knob, the shaft is also turned, and the door opens. The knob of a door always has a larger radius than the shaft so that the distance over which the force is applied _______ in order to _______ the effort force needed to open the door.A. Decreases, decreaseB. Increases, increaseC. Decreases, increaseD. Increases, decrease
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What is the key to most Al challenges?
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What is the function of the Turbine in a power plant using fossil fuels?O A. To recycle the steam back into water.B. To generate the steam to turn the generator.OC. To burn the fossil fuels, generating heat.OD. To spin the generator using steam.
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What TYPE of nucleic acid is found in the Ebolavirus?
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Which can be prevented with vaccines: bacteria,viruses, or both?
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The division of culture known as_tends to be fluid and changes quickly over time.A countercultureB. subcultureC. dominant cultureD. popular culture
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In which biome would you expect to find the greatest biodiversity? aTundra bConiferous Forest cDesert dTropical Rain Forest
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What is the relationship between a cheetah and a deer
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What two materials does the cardiovascular system deliver to the cells of the body?A. carbon dioxide and nutrientB. oxygen and nutrientsC carbon dioxide and waste materialsD. oxygen and waste materials
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_____ are proteins found on the surface of cells.HistamineAntibodiesAntigensLeukocytes
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A(n).........measures and records earthquakes.
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Which of these statements is true of ecosystems? a animals do not travel from one ecosystem to another ecosystem b the total amount of energy in an ecosystem does not change c air cannot be used by organisms once the air moves out of the ecosystems d matter lost by one ecosystem is gained by the surrounding environment
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4. Determine the phenotype for each genotype below if purple flowers are 1dominant to white flowers: PP *PurpleWhitePink
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A sample of water containing somehow and bacteria was kept in a container. After some days it was observed that only snowball existed. What is the reason for the disappearance of the bacteria?
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3How did scientists determine Earth has layers?OA. through the use of earthquake wavesOB.through deep core drillingOc. through x-ray analysisOD. through the use of magnetometersResetNext
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Earths largest ecosystems are the?
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PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
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