BIOLOGY HIGH SCHOOL

Which of the following is not a form of energyA.mechanical
B.heat
C.matter
D.solar

Answers

Answer 1
Answer:

Answer:

C

Explanation:

mechanical energy is the sum of potentiol and kinetical

heat is like stoves

solar is... the sun.

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If you have a heat engine with a hot reservoir of 515°C and a cold reservoir of 190°C, what is the thermal efficiency of the system?

Answers

The equation for the thermal efficiency of a system is given by n = Tc/Thx100 where n is the thermal efficiency, Tc is the temperature of the cold reservoir and Th is the temperature of the hot reservoir. Dividing 190 by 515 gives us an efficiency of 36.9%.

Answer: A.

63.1%

Explanation: edmentum

Explain how you determined the genotype of Maria and Juanita, even though you did not test their DNA.

Answers

The answer is a pedigree chart.

Pedigree charts are used to explain the occurrence of particular genes from one generation to the next. It gives enough information about family disease history. They are used in families to find out the probability of inheriting some disease. So, if Maria and Juanita are cousins and the genotypes of other members of their family are known, the pedigree chart could predict their genotypes. Still, it is not as precisely as DNA test.

During the time when humans moved from Africa throughout the world,a. birth and death rates were both fairly low.
b. population growth was rapid.
c. population growth was slow.
d. there was no population growth.

Answers

I believe it would be B, because if there wasn't a rapid population growth, there wouldn't be as many people as there are today. 

Write this number to two significant figures in scientific notation. Use the "^" character to indicate the exponent.5,489.6654

Answers

Converting a number to its scientific notation with two significant figures gives 5.5x10^3. Scientific notation is used to denote large or complicated numbers more easily. It basically involves shortening the number by moving the decimal point. A "10^n" is then included to make sure that the number is still the same. Sometimes, writing the scientific notation also requires rounding off the number.

The overall population of a species has increased. What could have occurred to allow this to happen?

Answers

Answer: Immigration can be a reason for a overall increase in the population of a species. It is a method by which the species at other place migrate to a different place permanently. The reason to migrate to a different area can be lack of resources, hunting, or any natural calamities. The population of a particular geographical area shifts to another area only because of the problems that does not allows the population to reside there. This makes the population move to another area for their survival.

D. The immigration of the population is greater than the emigration.

The amount of water a body requires for survival is dependent upon the climate and individuals level of physical activity

Answers

The recommendation of health professionals is to drink 8-10 glasses of water daily. But this is dependent on the climate and the activity the person is engaged into. For instance, an athlete who is training needs to drink more water to replace all the water lost in his body during training than compared to a person not training or exercising.

Answer:

the answer is True

Explanation:
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