Which characteristics belong to Whittaker’s classification system? Select two options. a. three domains
b. six domains
c. two kingdoms
d. five kingdoms
e. five levels
f. seven levels
g. eight levels

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.

In a system, when potential energy decreases, then entropy also decreases. true false

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.