Answer: The facts describe the rain forest called the Selva are Largest rain forest in the world , Richest biological resource in the world , Covers more then half of Brazil. Explanation: The word Selva refers to rain forests, especially which are located in the Amazon basin.
Explanation:
Answer:
you have to explain more cause idk
Explanation:
Answer:
Below
Explanation:
The greatest difference between modern and ancient life exists in the domain of health. According to one historical record, three hundred thousand new-borns use to die in the glorified Roman Empire. The life expectancy rate in the early society was 25 years, however people who managed to make it in the adulthood used to pass the age of 70. Secondly, pre-historic people used to have different kinds of herbs that helped them in dealing with different health issues. Today we have machines from which you can even regulate the pumping of the heart.
Answer:
The current amount of the Potassium-40 sample is approximately 37.521 grams.
Explanation:
The amount of the sample of the radioactive isotope decays exponentially in time, the amount of mass of the sample as a function of time (
), in grams, is described below:
(1)
Where:
- Initial mass, in grams.
- Time, in years.
- Time constant, in years.
The time constant can be found from half life (
), in years, described in statement:
(2)
If we know that 
, 
and 
, then the current amount of the sample is:
The current amount of the Potassium-40 sample is approximately 37.521 grams.
A simple stain is used to show that bacteria is present and what they look like opposed to other matter. a differential stain is used to separate organisms into groups.
