<span> Definitions, theorems, and sample problems</span>
Dinosaurs existed 4 the same reason that any other animal has existed or does exist. The dinosaurs evolve and were well adapted that they survived 4 millions and millions of years!
Hoped this helped! :)
A statement that would be least likely used too describe variation is
“Variation is something that moves”
That is a least likely description.
Given: The population density of frogs in a portion of a pond is 12 frogs per square meter. The size of the entire pond is 370 square meters.
To find: The total population size of the frogs in the pond.
Method: Using unitary method of proportions
Solution:
Let p be the density of the frogs present per square meter.
Let A denote the total area of the pond.
∴ p = 12 frogs/m² and A = 370 m²
The total number of frogs in the pond is given by,
Therefore, there are 4440 frogs in the pond.