Wave frequency is measured in units called Hertz (Hz). One Hertz is defined as
one wave per second. Suppose a person
counted 10 waves passing by over a time
period of 1 second. What is the wave
frequency?

i think that d. wind is the answer.   i missed the question when i answered a. currents.

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

here is your answer hope i .

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added