Acceleration = velocity / time.
Answer:
period
Explanation:
A wave takes 0.5 seconds to complete one cycle. It is called the time period of the wave. It is the time taken by the wave to complete one cycle.
The relation between the time period and the frequency is given by :
T = 1/f
Where
f is frequency of the wave
Hence, the correct option is (a) "period".
Answer:
The primary purpose in creating national parks is to protect the land from development and pollution.
Explanation:
National parks are owned by the national government. This areas are strictly reserved for habitat of wild animals.
The main purpose for creating national parks is to reserve some space for nature. This area is protected from pollution and development.
Thus, answer for given question is protect the land from development and pollution.
